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1. DOLI Serial Output com1 T1 Displacement Euclidean mm T1 Width Euclidean mm none none Figure 77 Output values of DOLI Binary Serial Output After closing the settings window the selected output values turn green The green color indicates values sent to the selected output Associated output services are shown when moving the mouse over the green icon of each value It is possible to readjust all output settings whenever the values are not currently being computed A1 Length Absolute Ettension a mm Al Length Relative Extension A2 Length Absolute Extension mm A2 Length Relative Extension Pr o N1 Width Relative Ectension y Output Configuration Figure 78 Green highlighted output values associated with output service Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 82 RCURY REAL TIME TRACKING SYSTEM 8 Examples MercuryRT allows browsing of illustrative examples which demonstrate software capabilities and typical use cases Examples are published via internet This way provides access to our library of online examples guaranteeing up to date examples It is possible to download an example to hard drive and explore results and settings User can try different settings compare results and revert local changes to original e
2. REAL TIME TRACKING SYSTEM folder Clicking the OK button will save the expression closing the window via the cross will ignore the changes After changing the expression it is checked for syntax errors See 11 2 2 1 for details 11 2 2 4 Removing an Existing Expression In the Custom Series Overview window click the Delete button A confirmation dialog will appear After deleting the expression the expression file from the disk is deleted as well and it will no longer be available to any projects 11 2 2 5 Importing an Expression In the Custom Series Overview window click the Import button A file selection dialog will appear requesting the user to enter an mxp file see 11 5 for details After importing the file it will be added into the user folder and to the displayed list on the UI 11 3 Syntax 11 3 1 Probe Naming Convention and Precedence Syntax Description SnameS Denotes probe of the specified name Non changing reference values will be used in the expression name Denotes probe of the specified name Varying deformed values will be used in the expression Determines precedence of expression parts as per standard mathematics can be used anywhere Table 2 Probe naming convention and precedence 11 3 2 Supported Probe Types Probe Type Return Type Represented Quantity PointProbe DoublePoint Position of the probe RigidPlaneProbe DoublePoint Position of the probe
3. o Select the name of primitive at the top of the context menu to change its name only certain primitives support this feature O OR Toggle computation of desired values by selecting their labels in the context menu most primitives support this feature even when a deformed frame is displayed in the camera view or the reference frame is locked O OR Perform one of the advanced operations supported by the primitive by selecting it from the context menu Also note that the grey area displayed around the reference primitives or some of their components represents the area of the correlation template as set in the corresponding part of the project settings template size from width correlation see 5 2 3 3 for width measurement points template size from correlation in time see 5 2 2 1 otherwise The displayed area may also be colored differently according to the estimated quality of the underlying template if this feature is enabled in the project settings 3 8 1 Point Probe Point probes shown in Figure 29 are represented by a single marker and primarily used to measure position and displacement of the selected point on the surface of the measured specimen The features of point probes are e In the mono and stereo mode O Measurements of positions and displacements from the reference positions e In the mono mode Measurements of velocities and accelerations Measurements of the width of the measured specimen A width measurement line
4. Detects information about the grid size and unit distance from custom QR codes provided on certain calibration grids Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 33 RCURY REAL TIME TRACKING SYSTEM e X mm Y mm The horizontal X and vertical Y position of the selected point in the coordinate system e Reset to 1 1 Sets the coordinate system to the default values 1 pixel 1 millimeter 3 7 2 Stereo Coordinate System In stereo mode the coordinate system which handles conversion of computed values into physical units mm is already part of the stereo calibration Such a coordinate system is based on left camera of the pair and has its center located inside the camera X axis going to the right of the camera Y axis going to the bottom of the camera and Z axis going away from the camera For the purposes of aligning the coordinate system with known points located in the scene instead a custom coordinate system feature is available and accessible through stereo pairing and calibration panel see 3 5 once the associated stereo pair has been calibrated The visual representation of custom coordinate system is made to closely resemble the coordinate system used for measurements in mono mode and is displayed in Figure 27 However unlike the mono coordinate system only the starting position of this
5. Mercury API TCP IP COM port service parameters 2 Server Address Port Number 4 Output Format Camera Delimiter Message Delimiter Value Delimiter Info Delimiter Not Computed Value Finish Cancel Figure 71 Mercury API Service TCP IP configuration 7 1 5 2 COM Port COM port option of Mercury API Service runs the service on specified COM port and sends messages in user defined format Parameters of Mercury API Service can be configured in Add I O Service wizard shown in Figure 72 These are the settings of COM port and output message format Settings of COM port include Port Name Baud Rate Parity Data bits Stop bits and Handshake They must correspond with COM port settings in operation system for its proper function Output message format consists of e Camera Delimiter Separates values taken from each camera Message Delimiter Delimits the entire message i e one package of data for one time moment e Value Delimiter Delimits each computed value e Info Delimiter Delimits each provided information camera ID computed values etc e Not Computed Value Specifies the value which is used for null i e not computed missing value e Decimal Point Not Comma Indicates if floating point or floating comma is used Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 78
6. Correlation Parameters in Time Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 53 RCURY REAL TIME TRACKING SYSTEM Speed Specified base correlation method Slower methods have greater chance to track larger movements Can be set to one of the following options O O O O O Fastest Searches small neighborhood Fast Searches intermediate neighborhood if necessary Normal Searches whole image for a limited number points if necessary Slow Searches whole image for all points if necessary Fastest with GPU Searches small neighborhood All points simultaneously e Maximum iteration count Maximum number of iterations performed per point e Maximum square residual per pixel Maximally allowed average squared error between reference image part and deformed image part warped using correlated transformation The value is calculated as average of the squared difference between values in individual pixels e Confidence interval Reliability threshold for 95 confidence interval in pixels Represents measure of the correlation quality For instance the default value of 0 2 px means that the found point is located within 0 2 px within the computed location with the 95 probability Smaller values are more discriminating i e fewer points may be computed with higher
7. False for not inverted the default value is false 10 4 Synchronization Box Vibrography Applications The Synchronization Box is a device which is distributed separately The box facilitates analysis of high speed periodic phenomena using regular non high speed cameras which significantly reduces the cost of equipment The main application is a vibrography analysis of excited specimen driven by a known signal The Figure 87 below shows a typical connection of the Synchronization Box in a vibrography application The source of the periodic signal is a generator which simultaneously sends the signal into a shaker and the Box Camera synchronization is realized via the Box according to the set of input parameters The Box determines the period of the input signal and sends it to the PC Both cameras are connected to the output channels of the Box Communication between the PC and the Box is realized via a serial COM port SIGNAL GENERATOR SYNC BOX PC SIGNAL IN Figure 87 Wiring diagram of the Synchronization Box 10 4 1 Phase Sweep Mode The default mode of operation of the Box is the Phase Sweep Mode The purpose of the box is to measure the input signal frequency report this to the PC for proper timestamp computation and trigger the camera s in exactly the correct moments to perform the so called phase sweep In the end the specified number of virtual vibrography analysis can be computed The resultant data
8. RCURY REAL TIME TRACKING SYSTEM Mercury API TCP IP COM port service parameters 4 Port Name Baud Rate Parity Data Bits Stop Bits Handshake 4 Output Format Camera Delimiter Message Delimiter Value Delimiter Info Delimiter Not Computed Value Decimal Point Not Comma Connection Parameters Finish Cancel Figure 72 Mercury API Service COM port configuration 7 2 Configuration of the output values Settings of the particular output measured values can be specified in the camera window Each measured value in the results panel illustrated in Figure 73 has an I O icon on the right side The icon shows whether the value is sent to output For the activation of individual measured values press the Output Configuration button Figure 73 Results panel with measured values and I O signalization Sobriety s r o Namesti 1 Kvetna 63 664 34 Kurim Czech Republic 79 Phone 420 541 231 698 Support 420 604 359 827 sales mercuryprogram eu tecs mercuryprogram eu RCURY REAL TIME TRACKING SYSTEM After pressing the configuration button a dialog window will appear The list of the active services is shown on the left side of the window Mercury Digital Output Service can send either all computed values simultaneously or up to eight selected values A H illustrated in Figure 74 Digital Output 127 0 0 1 5854 Analog Output Advantech HP Video COM3 Set to true if you want
9. it is necessary to have jumbo packets allowed in settings of associated network interface 5 1 1 5 Camera Link This sub section contains parameters of Camera Link cameras Interface Name Camera interface name which is to be found in National Instruments MAX application 5 1 1 6 Camera Display This sub section contains parameters of camera displays e Refresh Rate Hz Maximal refresh rate of camera display in Hz It is not applied during the movement of seek slider Setting this value to O will let all frames through 5 1 2 Synchronization Box Please see the Synchronization chapter for detailed information 5 1 3 Test Rig This section contains parameters of test rig Changes in these settings will be applied after restarting MercuryRT program e Active Test Rig Type of the currently active test rig for sensor readout and control 5 1 3 1 Doli EDC This sub section contains parameters of DOLI DoPE EDC device for sensor readout and control Version Specifies the version of Doli EDC DoPENet dll and DoPE dll a Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 50 RCURY REAL TIME TRACKING SYSTEM Device ID EDC device number 0 n e Setup Number EDC setup number 0 8 5 1 3 2 Analog Input This sub section contains parameters of analog input for sensor readout using MC
10. reflect changes in expressions However when used in real time the expression is evaluated on the fly Make sure the syntax of the expression is mathematically correct especially the number of opening and closing brackets Make sure the name of the operations is supported as seen in 11 3 The error message shown normally shows the exact place where the problem is The MercuryRT log may contain more information Most in the expression are not present in the current project The likely the probe names mentioned expression needs to be adjusted accordingly See When I enter a new expression modify an existing one an error is reported Make sure that the Double Type is correctly handled usually the Value property needs to be used except the top level Some problems cannot be resolved when statically entering an expression i e just the syntax and will only manifest when used in computation This is a limitation of the current version Please rename the expression file itself This is not supported at the moment The two cameras are not properly calibrated into one The correspond with each other reference frame coordinate systems must Swap Axes from the graph context menu can be used For the X axis any measured value can be selected them 420 541 231 698 420 604 359 827 sales mercuryprogram eu tecs mercuryprogram eu RCURY REAL TIME TRACKING SYSTEM 12 CONTACT DEVELOPMENT CENTER ADDRESS
11. 2 6 1 Graph Shows evaluated values for selected primitives of each camera Graph panel has several tabs with different graphs according to various measured units Graph can be zoomed using mouse scroll or fit to window using mouse double click Visibility of each series can be changed by clicking the corresponding checkbox in the graph legend which can also be seen in Figure 12 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 19 RCURY REAL TIME TRACKING SYSTEM V T4 Displacement Euclidean mm T5 Displacement Euclidean mm T6 Displacement Euclidean mm mm Camera Relative Time s Figure 12 Graph with legend Basic graph options can be modified using the context menu seen in Figure 13 Available are options Copy to Clipboard Save Image as and Print which assist with creation of reports about the measurement Graph appearance can be adjusted by options Graph type Show markers Swap axes and Show Series Maxima Additionally the Configure Custom Series option opens Expression Editor see 11 More detailed options are then available in Settings gt System Settings gt Graph Copy to Clipboard Save Image as Print X axis unit b Configure Custom Series Graph type b v Show markers Swap Axes Show Series Maxima v
12. 3 4 2 Double Line which may or may not have a defined position DoubleLine Operation Return Description Type IsValid Bool Indicates if the line has valid end points i e it has been computed StartPoint DoublePoint Returns the corresponding first point of the line EndPoint DoublePoint Returns the corresponding second point of the line LengthInx Double Returns the distance in X between the end points May be null when the line is invalid LengthInY Double Returns the distance in Y between the end points May be null when the line is invalid LengthEuclidean Double Returns the Euclidian length of the line May be null when the line is invalid LengthChangelnxXTo Double Returns the absolute change in X length DoubleLine ref between the specified line and the ref line May be null when one of the lines is invalid LengthChangelnYTo Double Returns the absolute change in Y length DoubleLine ref between the specified line and the ref line May be null when one of the lines is invalid AbsoluteLengthChangeTo Double Returns the absolute change in Euclidean DoubleLine ref length between the specified line and the ref line May be null when one of the lines is Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 102 RCURY REAL TIME TRACKING SYSTEM invalid RelativeLengthChangeTo Double Returns the relative change
13. 3D graph Display of principal orientations must be toggled in the reference frame before a computation via Hide Vectors in the context menu 3D reconstruction of an area can be seen in Figure 36 This is displayed in the the 3D graph and it is more precise the more points have been used for the computation The image data displayed on the resulting shape corresponds to the image data displayed in camera view of the left camera of a the stereo pair Figure 36 3D strain tensor E1 distribution on speckle specimen shown in the 3D graph 3 8 7 PIV Field in the mono mode only PIV Fields shown in Figure 37 are used for Particle Image Velocimetry They are specified as polygons analogous to areas see 3 8 6 with the exception that the points generated within do not represent points located on the surface of the measured specimen but locations in the image itself where changes are to be tracked The computed displacements are therefore not cumulative over time but always related to the preceding frame The resulting values are displayed as a colored polygonal grid with attached color scale This too is analogous to areas with the exception that if Displacement Euclidean is the currently displayed quantity oriented vectors are displayed as well to indicate the direction and the magnitude of the computed displacement In addition to displacements velocities and accelerations in individual directions may be measured as a post processing ope
14. Area Meas reMent nurrseii tenian E EEEE EEE EEEE TEATE 58 5 2 6 Marker Detecti Nn sisssiassrssriirerrsissssss rirrtar itses kassani rtint t os KEAS NN EEEN EEEN EES EAS EVRENE EENES SENN Ra ras 59 527 VIBO a PAY ennen Ane EEEE AE EE E EE EE E 61 5 3 Other OOS hc ececccrtepsctinaietancnsites sau apne ne enn EENE EENE EREE ENESES EARE EOE ENRE ETENEE ESE 62 6 Test Rig Configurati h wisiosisicnsdcndeunssundiandiundenseduetinndowedienstenddindavediansdundsuedeunteapetundiendientoaseduntiandeaees 63 6 1 Active THOSE WIG oieee eE EEEE EEEE EAE EEEE 63 6 2 DON EDC a A E E ante 64 62 OS RIS panele espa en arae EEE AEE EEEE EEEE EEEE ETE 64 6 2 2 Preset COU dt IO Miieateasscriteesscuacteesstuttecsncnemeanndued canscost vanced enaaeeteanadestensceumaunededinensceatneiaaitt 65 6 3 PAO IG lea MOU aE EE E 69 63 1 TestRig Pye esas sarc cea ecnsnctnreacnaatecashennesa inion crs AEE E eE AANEEN ERETTE ENNER ERREEN ENNE EENE ES ie 69 7 WO TE A l e N E E E NEEE EEA E E EEE E AE E E E EEE 71 7 1 Adding a New SEV ICS scareswsrenseaasieatenntuaceeantuectwanheeatntsaeaimunlezemnpindsammocsaniussananneriueiaens Manmade ti 71 7 1 1 Analog Output Service ocisnnicesiweneccrsraniaatconieeriwonece aration aeons tient teantennonddantaaiienanicenniverian 72 7 1 2 Mercury Digital Output TCP IP COM port Service ccccccccccccccceecessesssssseeeeeeeeeeeeeeseseeeaas 73 7 1 3 DOLI Binary Serial Output COM port Service cccccccesssssseseecceceeeeessaaeeesseseeeeeeee
15. Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 73 RCURY REAL TIME TRACKING SYSTEM 7 1 2 1 TCP IP Mercury Digital Output Service listens for incoming connection on the specified address and port and sends message in user defined format every time some new data are computed namely during real time tests and recomputations Mercury Digital Output Service has several parameters which are configured in Add I O Service wizard shown in Figure 67 They represent settings of TCP IP connection namely Server Address and Port Number and output format e Message Delimiter Delimits the entire message i e one package of data for one time moment e Value Delimiter Delimits each computed value Info Delimiter Delimits each provided information camera ID computed values etc e Not Computed Value Specifies the value which is used for not computed missing value e Decimal Point Not Comma Indicates if floating point or floating comma is used Example of a sent message 1_5 70104494781388 126 860906397332 r n Example uses default output format Number 1 represents camera ID The first value 5 70104494781388 follows after an underscore Then follow two value delimiter signs It means the second value is not computed After that the last value 126 860906397332 follows End of message is specified by message delimiter
16. LineProbe DoubleLine Position of the end points NeckGauge DoubleLine Position of the neck gauge end points ChainProbe DoubleLine Position of the chain gauge end points ForceGauge DoubleLine Position of the force gauge end points Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 100 RCURY REAL TIME TRACKING SYSTEM Table 3 Mapping between specific probe types and their respective types used in the Expression Editor Available operations on the returns types are detailed in tables that follow 11 3 3 Supported Measured Values All measured values are supported as the Double type and always have a value 11 3 4 Type Operations 11 3 4 1 DoublePoint DoublePoint Operation Return Description Type IsValid Bool Indicates if the probe position is valid i e has been computed X Double Returns the X value of the probe position Note that the IsValid property should be checked to make sure the number has been computed y Double Returns the Y value of the probe position Note that the IsValid property should be checked to make sure the number has been computed Nullablex Double Returns the X value of the probe position which can be null when not computed NullableY Double Returns the Y value of the probe position which can be null when not computed DoublePoint DoublePoint DoublePoint Adds two points X and Y is a
17. Name Baud Rate Parity Data bits Stop bits and Handshake They must correspond with COM port settings in operation system for its proper function Measured values are formatted by multiplication Float Factor It determines how many decimal places of measured values are to be preserved Use the same value configured in the corresponding DOLI EDC device DOLI Binary Serial Output COM port service parameters 100 4 COM Port Settings Port Name Multiplication factor for formating floating point units Finish Cancel Figure 69 DOLI Binary Serial Output Service configuration 7 1 4 HP Video COM port Service HP Video Service implements HP Video protocol for bi directional communication between MercuryRT and another application implementing HP Video protocol The service allows transmission of up to four values via COM port COM port configuration can be done in Add I O Service wizard illustrated in Figure 70 Settings of COM port include Port Name Baud Rate Parity Data bits Stop bits and Handshake They must correspond with COM port settings in operation system for its proper function Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 76 RCURY REAL TIME TRACKING SYSTEM HP Video COM port service parameters s Port Name Baud Rate Parity Data Bits Stop Bits Handshake COM Port Settings
18. Naming Convention and Precedence ccccccccccssssesssssseececceeceessuaaeesseeeeeeeeeeeeas 100 11 3 2 Supported Probe Types wiisccajacihecsdepsaceaeacnacindeassauincnanaiadeenaqnieetiactetennendpeanacaeieainennnanances 100 11 3 3 Supported Measured Values swisscssncnssensaverssvecaancuvedsonsuveassnnawectinncunetansanvedusretuncubnenasaubeenen 101 11 3 4 Type Opera tlONS errr E EE A E EEA 101 IEA EXIMPIES aeon E E 105 11 5 Expression File Format sa saxcscrvvnvcddravantnnssnaed edsuvneesdnninnd danunaesianaiavbtevavadssaanravilarceasivnnssanidencrandoeesten 105 11 6 LUMI AT IONS dcivedesiocisassennisonsceieniawaeauessibanboasieseismaveeaatadasiechaGias EERE ER OERKE EARR ERER EENE EEK EREE EES 105 17 TrouUBIESRNOOINE rire ana E EE E EEEE EEEE A E RaT 107 12 CONTACT sca cccewaavcavcactucevcecarseevacensivesucapesnaaneaatousesssneaaevacesianvecevaceteatseas vans usaersaeoicevaesaacnseneaieuate 108 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 6 RCURY REAL TIME TRACKING SYSTEM 1 Getting Started The following is a brief guide for MercuryRT workflow containing references to chapters with detailed information The chapter starts with hardware setup in section 1 1 which contains useful information about the camera setup lighting and specimen preparation Section 1 2 describes how to prepare MercuryRT in order to achieve
19. PHONE EMAIL Sobriety s r o Sales Sales Namesti kerma ce 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Support Support Czech Republic 420 604 359 827 tecs mercuryprogram eu DISTRIBUTOR Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 108
20. Parameters of COM pot Finish Cancel Figure 70 HP Video Service configuration 7 1 5 Mercury API TCP IP COM Port Service Mercury API Service allows controlling MercuryRT either via TCP or COM port communication Only one instance of Mercury API service can be running at a time To obtain the document with detailed description of the API communication protocol contact MercuryRT IT development 7 1 5 1 TCP IP Mercury API Service listens for incoming connection on the specified address and port and sends messages in user defined format Parameters of Mercury API Service can be configured in Add I O Service wizard shown in Figure 71 These are the settings of TCP IP connection namely Server Address and Port Number and message output format e Camera Delimiter Separates values taken from each camera Message Delimiter Delimits the entire message i e one package of data for one time moment e Value Delimiter Delimits each computed value Info Delimiter Delimits each provided information camera ID computed values etc e Not Computed Value Specifies the value which is used for not computed missing value e Decimal Point Not Comma Indicates if floating point or floating comma is used Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 77 RCURY REAL TIME TRACKING SYSTEM
21. actual extension of the test specimen in real time Tare Force Position Extension All Resets the specified testing machine sensors Preload Applies the preload value as set in the preset configuration window see 6 2 2 2 Cross head Up Down Adjusts the position of testing machine cross head An alternative to these buttons is provided by means of scrolling the mouse wheel button which can be activated by its corresponding button on the right and may also be done with an increased speed by keeping the Ctrl button held down Halt Cross Head Stops the movement of testing machine cross head Test Rig Settings Displays a detailed configuration window of the testing machine see 6 2 2 Active Preset Contains a list of created presets with the currently selected one being applied during the measurement Auto Run Toggles the option to activate the movement of testing machine cross head automatically by Run button in the project controls right before starting an actual test in which recording of measured values takes place Free Run Activates the movement of testing machine cross head with active preset settings Please note that data measured this way are not recorded unless a new test is started by Run button in project controls Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 64 RCURY
22. are always of the Double type see below e Primitives Lists all primitives probes available in the project more can be added in Camera Windows Only certain probe types are supported returning different types See 11 3 2 for details When adding a new expression the expression is checked for syntax errors If the check fails a message box with detailed information is shown The expression is still added to the project and it is up to the user to correct it 11 2 2 2 Activating an Existing Expression The Custom Series Overview window lists all available expression where each can easily be turned on as off by simply clicking the check box to the right The information about activated expressions is saved into the project file Please note that when activating a series the project must be recomputed to show the computed results The expression is saved into a file name mxp into Documents MercuryRT expressions 11 2 2 3 Modifying an Existing Expression In the Custom Series Overview window click the Edit button The selected expression will appear in the Custom Series Configurator window where it can be modified as needed Note that the name of the expression cannot be changed this can be done via renaming the file in the user Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 99 RCURY
23. in panel of calibration grid parameters see e Calibration Grid Type Specifies the type of the calibration grid Either a simple chessboard or a grid made of circles e Calibration Grid Width Number of square corners or circles on the calibration grid in horizontal direction e Calibration Grid Height Number of square corners or circles on the calibration grid in vertical direction Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 57 RCURYS REAL TIME TRACKING SYSTEM e Calibration Unit Distance mm Size of a single square or distance between circle centers in physical units mm e Number of Calibrated Distortions Number of distortions parameters that are calibrated Possible values are 0 3 eeoeoeonveveveee0n Circle grid with QR eeoeoeoeveveveeen ecoeoeoovoeadeveee2s Ben ee5ua5un5un5n5n5ggeV Q0e Calibration eeoeoevoevoeaveve20ee 0 unit distance ecoeoeoanoeveeeen eecoeoeoevoevedeeen eecoeoeoeveeeee0n eecoeoeoevoeveveeen Calibration Figure 51 Calibration grids 5 2 5 Area Measurement This section contains parameters of measurement with areas Some are applied to other full field measuring tools as well Grid Spacing Distance between neighboring grid points in pixels This includes the grid points of PIV fields as well e Max Allowed Change In Poin
24. it b wrong way to do it 5 2 2 2 Stereo Pair Correlation This sub section contains parameters of correlation from left camera to right camera in a stereo camera pair The principle by which these parameters fit into computation done during measurements using stereo camera pairs is depicted in Figure 50 They are also applied during input of reference primitives through camera displays of these cameras For explanation of these parameters see 5 2 2 1 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 55 RCURY REAL TIME TRACKING SYSTEM REFERENCE Stereo Pair Time seeking 2 z z rz s 3 z z G e a a 2 A amp D D oO oO Figure 50 Principle of stereo pair correlation 5 2 2 3 Incremental Correlation This sub section contains parameters of incremental correlation Finding correspondences between the current and the first frame starts to be impossible when scene changes greatly over time To solve this problem incremental correlation can be used When incremental correlation is used reference frame is regularly updated When current frame is being set as reference frame correspondences between first and current frame are stored Calculation of correspondences between new frame and first frame is done by combining correspondences between first and reference fr
25. menu bar option Import Data see 2 1 opens the data import wizard which creates a new project from a specified video file an image sequence as seen in Figure 43 or images from MercuryRT Project directory structure It can also be used to import externally measured data into the currently opened project Import Image Files Data to Import FPS Timestamp File Output project Import Cancel Figure 43 The page of Data Import wizard related to import of image data 4 1 Image Files In order to import image files through data import wizard the input files and the path to an output project file need to be specified in fields labeled Data to Import and Output project respectively Upon confirmation of this selection by pressing Import button a new project is created with the desired path and contains either the relative paths to selected images if they are located in the directory of the project or its subdirectory or their absolute paths otherwise The resulting project is then opened and the import wizard is displayed again so that image data for other cameras in the same output project may be specified as well The FPS value specified in the wizard affects the timestamps assigned to imported images which are considered to have been acquired with a uniform frame rate An alternative to this approach in assigning timestamps an option to provide an external Timestamp File is available and extracts these timestamp
26. mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 25 RCURY REAL TIME TRACKING SYSTEM e Show Highlights Lowlights shortcut H L E Pa Marks the overexposed underexposed areas with red blue color as shown in Figure 18 Both overexposed and underexposed areas of the image cause loss of information and are therefore unsuitable for forming places upon which the measurements take place a b Figure 18 Coloring of a overexposed areas b underexposed areas e Flip Image Horizontally Flips currently displayed image around vertical axis e Flip Image Vertically t Flips currently displayed image around horizontal axis Rotates currently displayed image counter clockwise by 90 rt Rotate Image Left e Rotate Image Right Rotates currently displayed image clockwise by 90 Fl e Focus Tool M Toggles tool for assisted focusing Move focus tool into desired area and change camera focus until best focus is reached The best focus does not have to be all the way on the right side of the bar Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 26 RCURY REAL TIME TRACKING SYSTEM Figure 19 Focus Tool functionality Grid Tool H Toggles the display of four perpendicular lines to help with specimen alignment Fig
27. options are separated into a group of settings applied thorough the entire application regardless of which project is opened referred to as system settings and a group of settings applied only within the opened project referred to as project settings Next the options within these two groups form several sub categories according to which part of the application are they logically associated with The descriptions of these options are also available inside the settings window underneath the property grids Settings System Settings Project Settings aanp ple Parameters 4 Correlation in Time A Correlation Speed Fast searches intermediat ighborhood if Width Measurement Maxi iterati 20 Grid Calibration gan Area Measurement Maximum square residual per pixel 400 Marker Detection Confidence interval 0 2 Vibrography Correlated transformation type Full affine transformation v Correlation Quality Horizontal translation Template height Horizontal scale and translation Template width Vertical translation 4 Stereo Pair Correlation Vertical scale and translation Speed Omnidirectional translation Maximum iteration count Horizontal scale and omnidirectional translation Maximum square residual per pixel Vertical scale and omnidirectional translation Confidence interval asa ok translation Correlated transformation type ll Correlation Quality Full perspective transfomation Template height 41 Template width 41 4 Incr
28. should be almost as if it was recorded by a periods is recorded with correct timestamps so that a Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 93 RCURY REAL TIME TRACKING SYSTEM high speed camera provided the test is periodical and the excitation signal is Camera Sync available the only limitation is that the computed amplitudes are valid only for the E Enabled excitation frequency and its harmonics The Phase Sweep Mode is activated by the Capture Mode combo box Each period is divided into part according to the specified phase step For example if the phase step is 10 degrees 36 frames are taken in one period Maximal number of the frames taken in one period is 3600 with the minimal phase step of 0 1 degrees Figure 88 Synchronization Panel in the Phase Sweep Mode default The panel contains the following controls e Enabled Starts stops the Box synchronization Synchronization Box V Enabled Input Signal Freq Hz 1000 000 Capture Mode Single Phase gt Selected Phase deg 0 0 Detectable reg HZ 10000 000 Periods to Capture 0K Estimated Frame Count 0 Take every Nth Period 18 e Input Signal Frequency Hz Shows the detected input signal frequency Each period of the signal is detected in the Box and sent into PC via COM port This ha
29. the desired results Section 1 3 follows by listing the necessary steps for measurement preparation The steps for measurement execution and evaluation are specified in section 1 4 and 1 5 Lastly the steps to troubleshoot problems are mentioned at the end of the chapter MercuryRT can be used in many different ways The usage depends on user s requirements and available hardware devices e Real time tracking system Real time tracking based on image analysis of captured camera images One or more cameras are required e Offline tracking system Offline tracking based on image analysis of previously recorded data Recorded data can be obtained during real time analysis or by importing image files or a video file When MercuryRT is used as an offline tracking system no hardware devices are required and therefore the section 1 1 is not applicable The offline tracking and real time tracking systems can be combined together e Testing machine controller External data recorder Recording of values provided only by a testing machine No camera is required and no tracking based on image analysis takes place Requires just a connected testing machine 1 1 Tracking System Hardware Setup The preparation of hardware is a first step that needs to be done prior to real time tracking It includes the placement of cameras and their connection to PC specimen preparation and specimen lighting It is recommended to use an appropriate camera synchr
30. to send all computed data values Figure 74 Output values of Mercury Digital Output TCP IP COM port Analog Output Service can only send a single selected measured value illustrated in Figure 75 Furthermore the recalculation between measured values and measuring range of the D A converter must be specified as well e Min Output Value Absolute Minimum for values in absolute units sent via analog output Lower values will be clipped to this value If an absolute value is sent to the output sets the value assigned to minimum of the analog range For example if set to 10 and the analog range is 10 V a value of 10 will be assigned 10 V e Max Output Value Absolute Maximum for values in absolute units sent via analog output Higher values will be clipped to this value If an absolute value is sent to the output sets the value assigned to maximum of the analog range For example if set to 85 and the analog range is 10 V a value of 85 will be assigned 10 V e Min Output Value Relative Minimum for values in relative units sent via analog output Lower values will be clipped to this value If a relative value is sent to the output sets the value assigned to minimum of the analog range For example if set to 5 and the analog range is 10 V a value of 5 will be assigned 10 V Max Output Value Relative Maximum for values in relative units sent via analog output Higher values will be cli
31. will be displayed around the selected point probe O Display of information about the positions of point probes 5 at Figure 29 Point probe Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 36 RCURY REAL TIME TRACKING SYSTEM 3 8 2 Rigid Plane Probe in the mono mode only Rigid plane probes shown in Figure 30 are represented by a single marker and used to compute movement of the coordinate system over time When one or more rigid plane probes are present during a measurement the coordinate system in each deformed frame is moved so that the change in position in physical units of rigid plane probes is minimized When less than 5 rigid plane probes are used then this minimized change in position is always equal to zero For visualization the images displayed in camera view are also transformed so that the present rigid plane probes stay always at same position in relation to the camera window In the stereo mode the functionality of rigid plane probes is replaced by optional motion removal feature of the custom coordinate system see 3 5 Figure 30 Rigid plane probe 3 8 3 Line Probe Line probes also known as virtual extensometers shown in Figure 31 are represented by a pair of markers connected by a line and they are primarily used to measure distance between two points length of the lin
32. 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 66 RCURY REAL TIME TRACKING SYSTEM The tab of preload settings shown in Figure 58 contains parameters of the preload applied to the specimen These are applied when the Preload button of the test rig panel is pressed see Figure 55 General Preload Cycling Channel Supervision Preload Parameters Preload Speed 1 00 Position Limit Mode NOT_ACTIVE Position Limit 0 00 Destination Load 1 00 Figure 58 Preload settings tab e Preload parameters This sub section contains the following O Preload Speed Adjusts the speed of the cross head during preload O Position Limit Mode Specifies whether an absolute or a relative extension limit is to be applied to the specimen If the position limit mode is active such condition is considered as well in addition to specified destination load The fulfillment of either one of the specified conditions signifies completion of the preload process o Position Limit Adjusts the value of the position limit applied to the specimen The control is available only if position limit mode is active O Destination Load Adjusts the value of the target load applied to the specimen 6 2 2 3 Cycling Settings The tab of cycling settings shown in Figure 59 contains parameters of an optional periodical repetition of the testing machine cross
33. 3 4 Coordinate System and Calibration The tab depicted in Figure 21 contains controls for the adjustment of coordinate system and camera calibration in mono mode All of the included operations are only optional yet necessary to maintain high precision of the performed measurements 1 Coordinate System and Calibration Hy Probes and Markers Distance mm 14 0000 Set Square af Free Edit Shown f Coordinate System W Distortions and Offset Calibration Camera distortions are calibrated 0 Show Distortions px Figure 21 Coordinate System and Calibration tab The explanations of included controls are as following e Distance mm Adjusts the distance between point 0 and point X of the coordinate system e Set Square Resets the coordinate system into the shape of a square points O and X are kept at the same position as before e Free Edit Toggles adjustment of the coordinate system by dragging its corner points into positions of the vertices of a square with specified size Otherwise it is only possible to modify the location of the origin point and rotation of the coordinate system Shown Toggles the visibility of the coordinate system in camera view Coordinate system is still applied when hidden e Coordinate System Opens window for advanced setting of the coordinate system see 3 7 1 e Distortions and Offset Calibration Opens window for calibration of the associated camera see 3 6 The curr
34. 31 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 9 RCURY REAL TIME TRACKING SYSTEM these quantities changed even after the measurement is over are the previously selected quantities are still being displayed e Adjustment of correlation parameters In order for the specified primitives to be tracked properly the parameters of correlation need to be adjusted according to the specific requirements of the measurement This can be done either through the parameters panel of the camera window see 3 3 or through the settings window under project settings see 5 2 2 The default correlation parameters are usually suitable for many typical measurements but there are still some situations where a specific parameter needs to be changed in order to achieve the desired results more about this in chapter 1 6 1 4 Measurement Execution When all previously described steps have been successfully performed a measurement is ready to be started and can be executed as following e Run test Done via the Run button in the main window see 2 5 performs a live measurement with requested quantities being computed in real time This option is available only if a live camera is associated with the currently open project and can also be used to acquire the images from these cameras without actually measuring anything If a testing machine is available as well this is where the values from i
35. 41 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 97 RCURY REAL TIME TRACKING SYSTEM Active Custom Series for the Project LineAngle Math Atan2 A7 LenathInY Value A7 LengthinX Value PointDistance T28 T23 Length mm TestRigEtensionVsLoad TestRigLoadN Figure 92 Overview of active expressions for the currently open project All expressions are available for all projects but only the checked ones are evaluated 11 2 2 1 Adding a New Expression A new expression is added by clicking on the New button The Custom Series Configurator modal window is opened as seen in Figure 93 Name Line ngle Designation Measured Values Primitives Reference a 0 T28 Point Probe z Camera Frame ld E 0 T29 Point Probe Deformed Firewire Bus Time s 1 T22 Point Probe Test Rig Force N 1 T23 Point Probe t t 1 Test Rig Position mm A7 Line Probe Test Rig Ectension mm Force Gauge Force N Stress MPa Frame Index Batch Number E Extemally Synchronized Timestamp s Temperature C 1 Strain Gauge N1 Neck Gauge Expression Math Atan2 A7 LengthinY Value A7 LengthinX Value Figure 93 Overview of expression editing The window contains these sections which are mandatory Sobriety s r o Namesti 1 Kvetna
36. 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 98 RCURY REAL TIME TRACKING SYSTEM e Name Specify the desired name of the expression The default is Default This cannot be later changed from the Ul This name must be unique and must comply with file naming conventions as it is also the name for the file where the expression is stored e Expression Desired expression The syntax rules for the format of the expression are detailed in 11 3 Any mathematically valid expression is allowed e Output Quantity Does not contribute to the expression itself Merely determines the resultant type of the expression and therefore sets the destination graph The sections below are included for better convenience of the user and may fully be replaced by a written text in the Expression field e Designation Changes between reference and deformed designation Most of the time the deformed value the actually computed value for the position is what is needed hence it is the default However for computation of relative values such as elongation in percent a reference value is also required e Measured Values Lists all measured values in the project most importantly the Force Load N from a testing machine or the Excitation Frequency Hz By double clicking the name of the measured value variable is included into the Expression field The values
37. 72 RCURY REAL TIME TRACKING SYSTEM Analog Output service parameters Analog Output Device Mcc Device Number 0 Channel Number 0 Analog Output Device Choose device type for sending of extensometer output through an analog data acquisition device WARNING If you want to use MCC device use Instacal program included in MercuryRT installation to create a configuration file before tuming this option on Finish Cancel Figure 65 Add I O Service wizard Analog Output Service parameters e Analog Output Device Specifies the type of used device and must be set to one of the supported D A converters The converter can be selected either from MCC or Advantech e Device Number Adjusts the number of the device used for analog output Change only if there is more than one available e Channel Number Adjusts the channel number of the D A converter where output value is to be sent 7 1 2 Mercury Digital Output TCP IP COM port Service Mercury Digital Output Service allows sending of either up to eight selected measured values or all measured values The service offers two types of connection TCP IP or COM port Figure 66 In addition user can adjust the output format of sent messages according to his specific requirements for both types of connection Choose Connection Type TCP IP COM Port Figure 66 Connection types of MercuryRT Digital Output Service Sobriety s r o Namesti 1
38. AE 46 4 3 Images from MercuryRT Project directory StrUCtUre cccccccccccccccssseessseeeeececeeeesssauaeesseeeeess 46 4 4 Externally Measured Data cincasasuspsacecasecaseuseoysariaeusqansecesnenewusqanseuwsaunieasintanmaveganieamauatmuncatoassdtexetan 46 4 4 1 Meas red Data IMPOrt TOGhiwcosansrencanerearetaeseaaabeaneinnacancigensntraeeounnnesebennaesdnnnnceamneesasanmecdsnei 47 5 Aa AN A A E E E E E E E OE EE E EE EE 49 5 1 Systemi SetINES orenen rnn E A EE EE EA E E E E 49 5 1 1 Camela E E E 49 512 SyYACHTONIZAUON BOX rosisere ssi reaa EEAS EEEE E T REEE EEE 50 5 1 3 MS E es E E E E E A T E E E TE eeonneneeneee 50 5 1 4 Remote Presente ocissisiiercririse ninr nsen A ETET EENAA T EEP EETRI E TEEPEE ETERA E EEEE EET 51 5 1 5 DEDUCE neres E EE EEE E AE E E EAEE S 51 SLO CGPI ee EEA E E AE EAEE E EE E E E E 51 5 1 7 Recorded Data Pla yefeesocisoeieoiirie Anea SONEA EEE EATERS E ENEE EEE EERIE EEEE 52 5 1 8 ETA E E ET E E A A E E E E 52 5 1 9 PE Uc Girare EEE E E EE eco iece 52 5 2 Project Setting meee ene a E E EA E EE EE E TE E E E ere eee 53 5 2 1 Sample Parameters sisvsivsssrinesdsvaveroderriendasnavevedevadessdunadensdaurensddivadedadenwenaedaersesndierdeasiieaderndennines 53 522 ICONrelat OMe nae e E a E E E E E E 53 5 2 3 Width IMISASUP EIEN Us sixcnnicanesssequtcidiuconnen rears cantcasasdinatiuaannccsnsainansacemexnnebeedacinnctauieennanecians 57 524 GANd AOA CON anes teontnersponniacavenincesmaniaen EEE TEE EE E E E andrea 57 5 2 5
39. C and Advantech devices e Device Number Number of analog device used for input of sensor data e Load Channel N Parameters of load channel with values in units of N These are the number of the channel for this analog input minimal input value and maximal input value Extension Channel mm Parameters of extension channel with values in units of mm These are the number of the channel for this analog input minimal input value and maximal input value Position Channel mm Parameters of position channel with values in units of mm These are the number of the channel for this analog input minimal input value and maximal input value e Temperature Channel C Parameters of temperature channel with values in units of C These are the number of the channel for this analog input minimal input value and maximal input value 5 1 3 3 Digital Input COM Port This sub section contains parameters of COM port for Digital Input They all represent settings of the used COM port and are as following Port Name Baud Rate Parity Data Bits Stop Bits and Handshake Specify an empty string as port name to set the COM port as none 5 1 4 Remote Presenter This section contains configuration for remote wireless presenters Such a remote presenter is a device utilized by MercuryRT for assistance with camera calibration by remote activation of the Capture Image button and definition of coordinate system by pressing t
40. Chain probe 3 8 5 Surface in the stereo mode only Surfaces shown in Figure 33 are primarily used to visualize spatial relations between other tracking primitives hence providing additional visual information in the resulting 3D graph see 2 6 3 They are specified as a polygon with its nodes located on a single plane in order to achieve the intended results because a part of the image from left camera is displayed in 3D graph on a part of this plane enclosed by the polygon Another typical use may be to enclose the template of a measured primitive by a surface to have it visible in the 3D graph afterwards Note however that only areas see 3 8 6 may be used to fully reconstruct the shape of the measured specimen in 3D space and that both surfaces and areas cannot be viewed in the 3D graph at the same time An additional optional functionality of surfaces is to evaluate Lagrangian finite strain tensors thus effectively replacing strain gauges see 3 8 9 in the stereo mode Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 38 RCURY REAL TIME TRACKING SYSTEM a b Figure 33 A surface used for visualization of spatial relations between four point probes a during their input in left and right camera of a stereo pair and b in the 3D graph 3 8 6 Area Areas shown in Figure 34 are used for full field ana
41. ERCURY TIME TRACKING System CURDS REAL TIME TRACKING SYSTEM MercuryRT 2 3 User Manual Revision e Date of last revision 2014 12 12 RCURY REAL TIME TRACKING SYSTEM Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 2 RCURY REAL TIME TRACKING SYSTEM Revision History SW Version Description Be Originator Date Draft 1 0 Jan Cepela 2010 03 05 Inclusion of opponent s comments 1 0 Jan Cepela 2011 10 07 Document enhancements 1 1 Petr Gajdos 2012 05 18 Document enhancements 1 2 Jan Cepela 2012 06 26 Document enhancements 12 Petr Gajdos 2012 10 15 Document enhancements 1 2 Peter Sluka 2012 01 17 Document enhancements 1 3 Peter Sluka 2013 03 20 Added TC 1 3 Jan Cepela 2013 04 13 Features and GUI updated 1 4 Petr Gajdos 2013 08 07 Features and GUI updated 1 5 Petr Gajdos 2013 10 17 Update on current version 2 0 Adam Kosteln k 2014 02 14 Update on current version 2 0 Adam Kosteln k 2014 03 12 Update on current version 2 2 a Jakub Rada 2014 07 03 Update on current version 2 2 b Jakub Rada 2014 07 07 Update on current version 2 2 C Jakub Rada 2014 07 16 Update on current version 2 2 d Jakub Rada 2014 07 18 Update on current version 2 2 e Jakub Rada 2014 07 23 Update on current version 2 2 f Jakub Rada 2014 07 26 Test Rig Vibrography and Stress vs Strain Graph 2 3 a Jakub Rada 2014 08 19 T
42. Editor 11 1 Overview MercuryRT provides a wide variety of computed values Each probe has many different quantities which can be turned on by a simple mouse click However for demanding users this may still not be enough Therefore a user configurable data series can be specified via the built in Expression Editor These custom series are saved into a user folder and can be used in any project Series can then be turned on and off independently for the specified project Data is displayed in the graphs and exported in CSV Custom data series specification can be sent via email downloaded from the Internet and easily imported 11 2 Expression Workflow 11 2 1 Expression Editor Access 7 The Expression Editor is accessed via selecting the Configure Custom Series in any graph s context menu from the Main Window as demonstrated in Figure 91 Copy to Clipboard Save Image as ba beatae eens we Print ete ga antes X axis unit gt a 7 Configure Custom Series rr puden Saw ae 5S seks Graph type gt aa Show markers bdo bois ein Renae DEER Swap Axes Show Series Maxima cece reed eocees Render Graphs in Realtime Camera Relative Time s Figure 91 Access to the Expression Editor from the Main Window 11 2 2 Expression Operations All operations are performed in the Custom Series Overview modal window see Figure 92 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 5
43. M 7 I O Services This chapter describes the setup of MercuryRT I O Services MercuryRT allows sending user defined values of measured quantities to a selected output There are described configuration options of the analog digital and DOLI Binary Serial outputs as well as HP Video and Mercury API protocols Configuration of services is handled by I O Services panel illustrated in Figure 63 situated in the main window of MercuryRT Any new added I O service is shown in Active Services list If a service is properly configured a green circle will appear next to its name Connection error of an I O service is indicated by a red circle Error description is shown in the tooltip of the service If a service is manually stopped the circle turns grey Additionally each created service can be edited or deleted via the buttons at the bottom of the panel Test Rig 1 0 Services Active Services Digital Output COM2 Displays the selected service Digital Output COM3 Starts Stops the selected service Edits the selected service m Stop Removes the selected service Figure 63 I O Services panel Adds a new service 7 1 Adding a new service It is possible to choose from several services which differ in the way of communication For the proper function of each available service it is necessary to specify the connection parameters Moreover some of the services allow adjustment
44. Mode 10 4 3 Connection of the Synchronization Box Connection settings of the Box are located in the Settings window under System Settings gt Synchronization Box see Figure 90 They all represent settings of the COM port used for bi directional communication with the connected Synchronization Box and are as following Port Name Baud Rate Parity Data Bits Stop Bits and Handshake Specify an empty string as port name to deactivate the Synchronization Box System Settings Project Settings Connection parameters of an optional Synchronization Box Port Name Name of the associated COM port Specify an empty string for none Figure 90 Synchronization Box Settings showing the default parameters Please note that the COM port name depends on the port where the Box is actually connected Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 664 34 Kurim Czech Republic Support 420 604 359 827 95 sales mercuryprogram eu tecs mercuryprogram eu RCURY REAL TIME TRACKING SYSTEM 10 4 4 Advanced Synchronization Box Functions The supplied synchronization box provides further custom functions which are available as a separate document from the developer Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 96 RCURY REAL TIME TRACKING SYSTEM 11 Expression
45. Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 10 RCURY REAL TIME TRACKING SYSTEM e Viewing the results of a stereo measurement in 3D graph In the stereo mode the positions of specified tracking primitives are computed in 3D space as well and can be viewed through the 3D graph panel of the main window see 2 6 3 This provides visual information about the movement of tracked points in 3D space during the measurement and may also display the reconstruction of the shape of the measured specimen in 3D if desired see 3 8 6 e Performing vibrographic analysis As a part of post processing of the computed values a vibrographic analysis may be performed in the vibrography window accessible through the vibrography button located in the menu bar of the main window see 2 1 A detailed description of the capabilities of this window is available in chapter 9 and it is important to note that a vibrographic analysis is only intended to be performed on a measurement of periodical process Also the acquisition of data in this case needs to be done either using a high speed camera or regular industrial cameras with a specialized synchronization box see 10 4 e Exporting the data All data computed using specified tracking primitives measured by a connected testing machine and other important data such as the timestamps of acquired images may
46. Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 34 RCURY REAL TIME TRACKING SYSTEM Please note that although the custom coordinate system may be hidden using the corresponding button in camera view controls panel see 3 2 this does not disable it nor change the detection status of its points in any way 3 8 Probes and Markers The probes and markers tab contains all available tracking primitives and their related tools As portrayed in Figure 28 different buttons are located within this tab in mono and stereo mode as some primitives do not have their equal counterparts in the other mode The descriptions and usage of the individual primitives are provided in the following chapters 1 Coordinate System and Calibration T Probes and Markers T po R pin A tA Chai Os a Point Probe Rigid Plane Probe Line Probe Chain Probe Area YP Include w Exclude zu PIV Field KA Force Gauge Strain Gauge Neck Gauge Pair Probes a i Detect Markers t Detection Settings x Clear All a E Stereo Pairing and Calibration fg Probes and Markers Point Probe Line Probe SJ Surface Area a Include a Exclude Force Gauge q Pair Probes GY Detect Markers PX Detection Settings Clear All ji b Figure 28 Tracking primitives for a mono and b stereo camera mode All primitives regardless of their type can be manipulated only when the r
47. REAL TIME TRACKING SYSTEM Figure 55 Test Rig panel Active Test Rig Doli EDC 6 2 2 Preset Configuration The testing machines have their specific settings stored in the form of special configuration files called presets which are then selected independently of the currently opened project The detailed properties of the tension test machine can be adjusted through the dialog window of test rig presets shown in Figure 56 This includes the type of the performed test tension pressure the speed of the cross head the size of the preload and the conditions for automatic stopping of the machine Figure 56 Test Rig Presets dialog The controls located in this dialog are specified as following Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 65 RCURY REAL TIME TRACKING SYSTEM Create Creates a new testing machine preset When pressed a dialog window appears prompting to specify whether to copy the settings of currently selected preset or use defaults e Edit Modify the preset selected in the list above The settings accessed by pressing this button are described in the following chapters e Delete Deletes the selected preset e Import Imports a previously created configuration file 6 2 2 1 General Settings The tab of general settings shown in Figure 57 contains mostly
48. Render Graphs in Realtime Figure 13 Graph context menu Values shown on the X axis of the graph can be chosen from X axis unit submenu seen in Figure 14 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 20 RCURY REAL TIME TRACKING SYSTEM Copy to Clipboard Save Image as E o Xaisuit k v Camera Relative Time s Configure Custom Series Camera Frame ld Graph type gt Firewire Bus Time s v Show markers Test Rig Load N Swap Axes Force Gauge Force N Show Series Maxima Stress MPa v Render Graphs in Realtime ane eels Batch Number Externally Synchronized Timestamp s Test Rig Position mm Test Rig Extension mm Temperature C Figure 14 Unit options for the X axis 2 6 2 Stress vs Strain Graph The best way to view and evaluate the results of a tensile test is through a specialized graph shown in Figure 15 The X axis shows deformation of the sample computed using input probes capable of tracking extension while the Y axis displays the value of stress computed from the measured force and configured area of the cross section of measured sample The results of the test are visible only if such a probe is present in the measurement and the sample parameters are set properly in the settings window under project settings see 5 2 1 or in the corresponding control on th
49. Stop Stops playing and seeks to the reference frame O Loop Enables disables loop during play There are two ways of loop circle and bidirectional Circle loop continues playing by the reference frame when the end frame is reached Bidirectional loop switches direction from forwards to backwards when the end frame is reached and vice versa when the reference frame is reached O Previous Frame One frame step to the previous frame O Next Frame One frame step to the next frame Qr lt a gt mw idol Figure 9 Recorded Data Player From the left to the right loop backplay play stop previous frame and next frame Set As Reference Sets the currently displayed frames determined by the current position of the seek slider as reference If there are any computed data present there will be given an option to use either valid computed data in the given frame as a new reference for further computations or copy the probes and markers from previous reference frame into the new one Set As End Sets the current position of the seek slider as the effective end of the record the same way it would be set by moving the corresponding element of the seeker by mouse e Frames Saved Toggles the option to save recorded images into the directory with project files If disabled it will not be possible to view the processed images after the test has been stopped Enabled by default Sobriety s r o Namesti 1 Kvetna 63 P
50. TRACKING SYSTEM e When a new expression is added or an existing one is activated the project needs to be recomputed to the resultant series in the graph e The configured series value is not visible in a data display like other quantities are visible in the Camera Window e The name of the probe must correspond with a probe from the project At present it is not possible to create a template saying first point probe Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 106 11 7 RCURY REAL TIME TRACKING SYSTEM Troubleshooting Problem When I click the activation check box no new series is added When I enter a new expression modify an existing one an error is reported switched to another project measurement and now my expression does not show in the graphs My configured expression does not show in the graphs cannot rename my expression cannot display any data referencing 3D The distance between two points in two different cameras is not correct do not want the computed value to go on the Y axis Table 10 Lists occurrences of problems with custom expressions and the appropriate approaches to resolve Sobriety s r o Namesti 1 Kvetna 63 664 34 Kurim Czech Republic 107 Phone Support Solution At present the project needs to be recomputed to
51. a b c Figure 53 Automatic pairing types a shortest b optimal and c longest 5 2 6 1 Line This sub section contains parameters of line detection e Line direction Direction of detected lines vertical or horizontal e Number of lines Maximum number of detected lines A value of O denotes detection of any number of lines Center of detection Relative position of center of detection 0 0 is top left and 1 1 is bottom right around which lines are detected Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 60 RCURY REAL TIME TRACKING SYSTEM e Minimum length of line Minimum length of line in millimeters e Maximum length of line Maximum length of line in millimeters 5 2 6 2 Edge This sub section contains parameters of edge detection Maximum distance from center Maximum distance between detected edge and center of detection in pixels e Center of detection Relative position of center of detection 0 O is top left and 1 1 is bottom right around which edges are detected Number of edges after center Number of detected edges after to the right or bottom center of detection Number of edges before center Number of detected edges before to the left or top center of detection Edge direction Direction of detected edges vertical or h
52. ally stored image files Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 30 RCURY REAL TIME TRACKING SYSTEM 3 7 a Coordinate Systems Ti Ta Tia Figure 24 Valid calibration grid images The coordinate system is a tool for conversion of computed values into physical units mm In mono mode the coordinate system is set independently to the camera calibration but in stereo mode the Sobriety s r o Namesti 1 Kvetna 63 664 34 Kurim Czech Republic 31 Phone Support 420 541 231 698 420 604 359 827 sales mercuryprogram eu tecs mercuryprogram eu RCURY REAL TIME TRACKING SYSTEM coordinate system is already a part of the calibration of the stereo pair However even in stereo mode a custom coordinate system may be enabled for allowing user specified location of its origin and alignment of its axes The adjustment of coordinate system in mono and stereo mode respectively is described in the following chapters 3 7 1 Mono Coordinate System The coordinate system window seen in Figure 25 is accessible through the coordinate system and calibration tab in mono mode and allows setting the coordinate system using points of image with known location in physical units When opening the window for the first time the currently displayed image in the camera view is loaded into this w
53. am eu 52 RCURY REAL TIME TRACKING SYSTEM 5 2 Project settings The tab of settings window labeled Project Settings contains the group of settings applied only within the opened project Their saving and loading takes place altogether with the rest of the project data 5 2 1 Sample Parameters This section contains parameters of the measured sample 2 2 Cross Section Area mm Reference area of the cross section in mm Poisson Ration Minimal Maximal Value The minimal maximal value of Poisson ratio measured for the current sample that may be displayed used to filter out noise during measurement 5 2 2 Correlation This section contains parameters of correlation e Evaluate Pattern Quality Indicates whether the quality of correlation pattern should be evaluated individually for each marker and visualized as color of the displayed template 5 2 2 1 Correlation in Time This sub section contains parameters of correlation for a single camera in time domain The principle by which these parameters are used to compute data associated with deformed frames is depicted in Figure 47 Parameters of correlation of width points see 5 2 3 3 and correlation between left and right camera in stereo camera pairs see 5 2 2 2 are specified independently but consist of the same set of parameters nonetheless REFERENCE Frame 0 Figure 47 Principle of correlation in time domain Time seeking
54. am eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 18 RCURY REAL TIME TRACKING SYSTEM accessible through a context menu seen in Figure 11 See chapter 5 1 6 for further explanation of the provided options _ Enable Batches Averaging 3 V A1 Length Absolute Extension mm V A2 Length Absolute Extension mm Copy to Clipboard Save Image as Print X axis unit mm Configure Custom Series Graph type Show markers Swap Axes Show Series Maxima Render Graphs in Realtime Camera Relative Time s Figure 11 Graph of mm units with shown markers and an opened context menu with additional options Explanation of other controls located in the graphs panel e Enable Batches Averaging Activates a mode in which the results computed within batches are averaged to form a new set of results which is then displayed in graphs instead of the unprocessed results Please note that this will only bring meaningful results if the frames of a measurement are divided among multiple batches and there are only minor differences in the deformation of the measured sample between the frames forming a single batch If these prerequisites are met the averaging of batches may be used as a suitable tool to increate the precision of computed results by smoothing out the errors of used computation methods Synchronization Opens synchronization panel see 10
55. ame and between reference and new frame It is desired to change reference frame when as much as possible correspondences are found because those not found will not be found in all next frames e Maximum number of images in incremental correlation s sequence Adjusts the maximum number of frames between resets of reference frame O default or less is used to represent infinity e Minimum number of images in incremental correlation s sequence Adjusts the minimum number of frames between resets of reference frame O default or negative turns off incremental correlation e Required points to start new incremental correlation s sequence Adjusts the minimum required relative number of computed points 0 means no point is required 1 means all points are required to reset reference frame Using this one can postpone reference frame reset when too few points are computed due to some local disturbance In summary reference frame is reset when at least minimum number of frames passed since last reset and enough points is computed Reference frame is also reset when maximum number of frames since last reset is reached without computing enough points Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 56 RCURY REAL TIME TRACKING SYSTEM 5 2 2 4 Stereo Correlation This sub section contains parameters of correlatio
56. an be turned on and off by checking the Camera Sync Enabled check box This enables last used synchronization If synchronization options need to be adjusted this can either be done via clicking the Settings button on the Camera Sync panel shows the dialog box shown in Figure 84 or in Settings gt System Settings gt Camera Camera Synchronization Mode MasterSlave Master camera Cam 0 CameraFake 0 J Figure 84 Camera Synchronization Dialog Master Slave External Trigger FW Bus Sync Master Camera selection 10 3 1 Camera Synchronization Modes MercuryRT supports the following modes all of them depicted in Figure 85 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 90 RCURY REAL TIME TRACKING SYSTEM e FWBusSync Valid only for FireWire cameras Requires that all cameras are daisy chained on a single FW adapter The advantage is that no additional devices or cables are needed e ExternalTrigger All connected cameras are switched into an external synchronization mode where they are awaiting an electric pulse on an input An external device is needed to trigger the cameras at the desired moment Works for any kind of camera interface e MasterSlave A synchronization mode where one of the camera acts as a master identified by Master Camera Id i e broadcasts a pu
57. and allows their management See the chapter 7 for more details 2 4 Active Measurement A panel in the main window which primarily provides information about the names of active cameras and the amount of captured frames in the active measurement as well as the number of batches among which these frames are logically distributed Under this display is also located a group of tools for advanced project management described in Figure 4 where new measurements may be created renamed deleted and the batches in the active measurement may be readjusted MeasurementO Cam O Frames 42 Batches 5 C Measurement 1 ACETU ee RUC Measurement Adds a new active measurement Deletes the selected measurement 4 Adds a new active measurement if EJ ea QR code is available on the surface SIT of the specimen Figure 4 Active Measurement Readjusts batches in active measurement More detailed explanation of some tools e Create new measurement Opens the dialog seen in Figure 5 prompting for a name of a new measurement Recorded camera images in the open measurement can be reused in the new measurement Check Reuse recorded camera images option for this functionality In this case the new measurement contains either the relative paths to reused images if they are located in the directory of the project or its subdirectory or their absolute paths The unchecked option creates an empty measurement All primitives calibration
58. ase note that some features require or depend on camera calibration therefore it is recommended to perform calibration as the first step after opening camera window Each camera lens has its specific distortion which negatively influences the measurement In this case it is necessary to perform calibration to calculate this distortion so it can be removed later Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 29 RCURY REAL TIME TRACKING SYSTEM Calibration is performed using calibration grid This grid is captured in various positions in whole field of view Calibration quality increases as more space is covered At the beginning parameters of calibration grid must be set see 5 2 4 This can be done either manually or automatically using Detect Calibration Parameters from QR Next frames with captured calibration grid can be either acquired directly from the camera Capture Image or loaded from the disk Load Images After calibration images like those in Figure 24 are loaded this may take a while as there calibration grids are being detected the calibration can be computed by pressing the Compute button The average calibration error should not exceed 1 pixel nevertheless mostly does not exceed 0 3 pixels Frames with significantly larger calibration error due to motion blur or invalid detection can be unchecked a
59. be exported for use in other applications such as MS Excel This is done using the export button located in the menu bar of the main window see 2 1 It is also possible to analyze the performed full field measurements more thoroughly using the exported files as they contain individual listing of the positions of the computed points 1 6 Parameters Adjustment and Results Reevaluation Always adjust parameters of the correlation that is causing the problem e Adjust Correlation in Time see 5 2 2 1 if experiencing problems with the computation between the reference frame and deformed frames e Adjust Stereo Pair Correlation see 5 2 2 2 if experiencing problems with the computation between the left and the right frame note that the stereo pair correlation is being done only in the reference frame pair and then two correlations in time are performed for both sides e Adjust Width Correlation see 5 2 3 3 if experiencing problems with the computation of width points Problem Solution Some primitives have been e Increase the template size so that template contains more not computed information Keep in mind that deformations smaller than template cannot be detected accurately e Adjust the correlated parameters For example omnidirectional translate is enough when specimen only moves The fewer parameters are being correlated the less information is required to correlate them e Increase the confidence interval or the maximum square re
60. cates that the measured plane is closer to camera as indicated by Figure 26 This feature is available only if the associated camera is calibrated and is usually used when a calibration grid is positioned on top of the measured plane and coordinate system is set using this grid In this case the offset is equal to negative thickness of calibration grid _ ieee Tn Figure 26 Adjustment of plane offset e Detect Grid Detects coordinate system points using a calibration grid with parameters set either through project settings see or in the panel at the bottom of this window see 5 2 4 Make sure that the input unit distance is correct because the points will be detected either way but their positions in physical units mm will be incorrect e Refresh Frame Reloads the displayed image as the last displayed one from the corresponding camera view This will also retry the detection of coordinate system points if it failed on the last try e Fit to Window Fits the displayed image into the visible area of the window Calibration Grid Type Specifies the type of used calibration grid Size count Adjusts the number of columns and rows of the grid For a chessboard grid this represents the number of inner intersections see 5 2 4 Unit Distance mm Specifies the distance between circle centers CircleGrid or the size of a single square Chessboard in millimeters e Detect Calibration Parameters from QR
61. computed data The controls are explained as following Project Seeker Figure 8 Seeks in recorded data Changing the position of the current frame updates the image s displayed in camera window s and causes highlighting of measured values in graphs The position of reference frame and end frame are shown as vertical lines with arrow pointers The green range shows quantity of computed data The light blue range which Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 16 RCURY REAL TIME TRACKING SYSTEM may overlapped by the green range also specifies the range of frames for recomputation recording of video files available through the corresponding control in the camera view controls of the camera window see 3 2 and vibrography analysis see 9 Reference frame Current frame Figure 8 Project Seeker e Seek to Reference Moves the seek slider to the position of reference image s and displays it them in the corresponding camera window s Pressing this button once again will instead move the slider to the position of last displayed image s e Recorded Data Player Figure 9 Plays recorded data in different ways O Backplay Pause Plays recorded data backwards or pauses playing at the current frame O Play Pause Plays recorded data forwards or pauses playing at the current frame O
62. coordinate system and its rotation may be adjusted by manipulating its points Specifically the point labeled as 0 sets the starting position of the custom coordinate system the point labeled X axis sets the direction of X axis and the point labeled XY plane sets the rotation of XY plane around X axis The individual lines may also be decoupled from the starting point of the coordinate system by dragging them instead of the points A A Paired with Cam 0 Swap UR LL Custom Coordinate System Bh Motion Removal 1g Detect in Grid EA Stereo Camera Calibration E 5 i t i Lad E na m t d LEFT CAMERA p RIGHT CAMERA Figure 27 Custom coordinate system in stereo mode The custom coordinate system is set properly only when the positions of all its points in left camera are detected in right camera This is indicated by light blue color and a displayed location in physical units mm next to the X axis and XY plane labels As with tracked primitives the points in right camera may be dragged to their corresponding positions in order to increase their likelihood of being successfully detected If the condition of their proper setting is not met starting a new test or recomputation is not possible and will result in a warning message To avoid this either set the custom coordinate system properly or disable it in stereo pairing and calibration panel see 3 5 Sobriety s r o Namesti 1 Kvetna 63
63. d is equal to two times the center frequency of the previous main octave band For example the fraction number 3 corresponds to the 1 3 octave analysis 5 3 Other controls e Factor Reset Resets the values in the current shown settings system or project to theirs factory defaults Save as Defaults Saves the values in the current project settings as the defaults e Load Defaults Resets the values in the current project settings to theirs defaults Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 62 RCURY REAL TIME TRACKING SYSTEM 6 Test Rig Configuration This chapter provides a detailed description of the configuration of testing machines which can be utilized for testing material properties 6 1 Active Test Rig The type of the active measuring device and several other parameters adjusting its configuration can be specified in the settings window under system settings shown in Figure 54 It is possible to connect a Doli EDC device one of the two types of supported analog inputs or a digital input using serial COM port For further explanation of the associated parameters see 5 1 3 and its sub sections System Settings Project Settings Language Camera ization Box Remote Presenter Debugging Graph Recorded Data Player Examples CETL Doi EDC a Doli EDC 2 79 0 1 Mi
64. dded separately producing a single point DoublePoint DoublePoint DoublePoint Subtracts two points X and Y is subtracted separately producing a single point DoublePoint Double DoublePoint Multiplies a point by a specified floating point number Both components are multiplied separately DoublePoint Double DoublePoint Divides a point by a specified floating point number Both components are divided separately DisplacementInXFrom Double Computes a distance in X between the DoublePoint specified two points May be null when one or both points are invalid Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 101 RCURY REAL TIME TRACKING SYSTEM DisplacementInYFrom DoublePoint Length GetNullableLength Distance To DoublePoint Double Double Double Double Computes a distance in Y between the specified two points May be null when one or both points are invalid Computes a Euclidean distance between the origin and the specified point Computes a Euclidean distance between the origin and the specified point May be null when the point is invalid Computes a Euclidean distance between the specified two points May be null when one or both points are invalid Table 4 Lists all operations available for the DoublePoint return type The DoublePoint type represents a point 11
65. e frame set as reference and stopping either on request or when it reaches the frame set as end of record It is therefore possible to have the computation proceed in either the forward direction or backwards as determined by the position of reference and end frame The difference is indicated in Figure 10 If there is more than a single batch available in the opened measurement an option is given to perform the computations using only the first frame of each batch Please note that it is not possible to perform this action if saving of the recorded frames was disabled during the test St Seekto Reference Q7 lt 4 gt m Id DI Sf Set As Reference Set As End y vo Recompute a t Seek to Reference Qr lt gt m id gt i a a 5 E Set As Reference g Set As End e SS Ee a Run e Recompute b Figure 10 a Forward and b backward recomputation 2 6 Graphs Panel Displays a selection of graphs for computed quantities which are sorted among their corresponding tabs according to the units in which they are measured Available are both graphs for values computed in real time and those computed as a part of post processing velocity and acceleration The last two tabs contain specialized graphs for display of results of tensile tests see 2 6 2 and results of stereo measurements in 3D space see 2 6 3 Additional options of these graphs are Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogr
66. e and shear There are 6 calculated parameters Rotation can be described as well by composition of shear and scale Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 54 RCURY REAL TIME TRACKING SYSTEM O Full perspective transformation Perspective transformation comprises of affine transformation extended by two parameters This method is primarily intended for description of the stereo pair correspondence AFFINE PERSPECTIVE C Parallelograms i SCALE SHEAR i tincludes alle all of Affine Oo co q k i A i ROTATION TRANSLATE Figure 48 Transformation types e Correlation Quality Specifies interpolation method used in correlation More complex methods are slower e Template height width Height width of the correlation template subset in pixels These specify the number of pixels which are used for the correlation template The size of the template should match the size of the smallest structures found in the image Large values are more likely to be found however take more time and may not sufficiently represent local deformations Small template sizes are faster and able to represent local deformations well however the lack of image information might result in points not being correlated Yh a Ree tae AN X ae a Figure 49 Template size and placement a good way to do
67. e probe on the surface of the measured specimen In the mono mode information about the length of a line probe is always displayed next to it The features of line probes are In the mono and stereo mode O Measurement of lengths and theirs change from the reference lengths O Fixation of edge points When edge point is fixed its position is not measured and therefore is same in all frames e In the mono mode Velocities and accelerations Measurements of the Poisson ratio and the width of the measured specimen A width measurement line will be displayed around the selected line probe Adjustment of the length of a line probe in the reference frame Alignment with the X or Y axis Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 37 RCURY REAL TIME TRACKING SYSTEM D Figure 31 Line probe 3 8 4 Chain Probe in the mono mode only Chain probes shown in Figure 32 are a modification of line probes see 3 8 3 where the line is uniformly divided into a specified number of points which are correlated as well and utilized to improve the precision of resulting data The number of dividing points is changed through the context menu In contrast to line probes chain probes are stripped of the optional width measurement functionality and do not have any corresponding counterparts in stereo mode _ Figure 32
68. e top left of the graph Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 21 RCURY REAL TIME TRACKING SYSTEM Graph mm Graph Graph Graph mm s Graph mm s 2 Stress vs Strain Graph 3D Graph Sample Cross Section Area mm 2 6 250 _ Enable Batches Averaging 2 V A7 Strain 96 400 Max 356 4656 ow i oO Yield Strenath 246 6242 Stress MPa N ar 100 Figure 15 Stress vs strain graph 2 6 3 3D Graph 3D graph seen in Figure 16 is used only in the stereo mode and shows computed positions of specified tracking primitives in 3D space Graph supports basic ways of handling rotate left mouse button mouse move zoom scroll mouse wheel or right mouse button mouse move and move middle mouse button mouse move Center of rotation can be either specified as the center of the graph or anchored to a measured primitive This can be changed in the view rotation pivot control on the bottom right of the panel Since the position specified this way is prone to change the rotation pivot is affected by seeking and computation unless Lock is checked Control Ortho on the bottom left of the panel switches between perspective and orthogonal projection Displaying areas see 3 8 6 and surfaces see 3 8 5 simultaneously is not possible so the but
69. ed movement lies in a plane 2D measurement is sufficient When out of plane movements are expected 3D measurement may be beneficial depending on the required accuracy of the measurement When a multi camera system is used for 2D cameras are not paired e Distortions calibration Calibration is performed through the camera calibration window see 3 6 Its purpose is to remove distortions of the lens which would otherwise negatively affect the results of the measurement If the tracked motion is small enough and the measurement is 2D only this step is not necessary e Coordinate system adjustment The coordinate system setup can be performed through the coordinate system window see 3 7 Its purpose is to set the directions of X and Y axes and to provide information used for pixel to mm conversions Provided the camera is perpendicular to the specimen and only relative changes in lengths are measured this does not need to be calibrated However we recommend calibrating the coordinate system in all cases as the perpendicular requirement is hard to achieve 1 3 Measurement Preparation Following the setup of the tracking system itself each measurement needs to be prepared according to its specific needs This includes mainly the selection of the appropriate measuring tool and measured quantities Specifically the individual things which need to be done are these e Placement of probes and markers The selection and placement of measurin
70. eference frame is displayed in the corresponding camera view indicated by the REFERENCE label in the title of the camera window and this reference frame is unlocked indicated by a grayed out icon of a lock in the camera view controls panel The manipulation can be performed in one of the following ways e Add primitives o Select a primitive type in the probes and markers tab o Click on a desired position in the corresponding camera view O When adding a polygon Area PIV Field left click its first node highlighted or right click anywhere to finalize it and start with a new polygon O Press Esc button or deselect the primitive in the probes and markers tab when finished e Delete primitives O Right click the primitive and select Delete from the context menu o OR Hold Shift button and left click the primitive o OR Press Clear All button in probes and markers tab to delete all primitives e Move primitives O Drag and drop the points or lines to move the primitive to a desired position O OR Drag and drop the width measurement points to adjust their position r Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 35 RCURY REAL TIME TRACKING SYSTEM O OR Drag and drop one of the nodes of a polygon to adjust its shape Areas PIV Fields e Change properties of primitives o Right click the desired primitive
71. emental Correlation Required points to start new incremental corela 0 9 Maximum number of images in incremental core 0 Minimum number of images in incremental corre 0 Parameters of correlation 4 Stereo Correlation l Maximum Accepted Triangulation Error 0 v Correlated transformation type Specifies parameters that are correlated Factory Reset Save as Defaults Load Defaults Figure 46 Settings window 5 1 System settings The tab of settings window labeled System Settings contains the group of settings applied thorough the entire application regardless of which project is open They are saved automatically upon making changes in the settings window and loaded when the application starts 5 1 1 Camera This section contains parameters of live cameras 5 1 1 1 Camera Synchronization Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 49 RCURY REAL TIME TRACKING SYSTEM Please see the Synchronization chapter 10 3 2 for detailed information 5 1 1 2 Slave Camera Trigger Please see the Synchronization chapter for detailed information 5 1 1 3 Master Camera Trigger Please see the Synchronization chapter for detailed information 5 1 1 4 Ethernet Cameras This sub section contains parameters of Ethernet cameras e Network Packet Size MTU The size of MTU packet in bytes For most values to function properly
72. ent state of this calibration is indicated by the colored display on the right of the button Clicking this display once the distortions are calibrated toggles whether the calibration is applied during a measurement or not e Show Distortions pixel Shows a color map which illustrates the magnitude of calibrated distortions caused by the curvature of used lens Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 28 RCURY REAL TIME TRACKING SYSTEM 3 5 Stereo Pairing and Calibration The stereo pairing and calibration tab shown in Figure 22 replaces the previously described coordinate system and calibration tab in stereo mode Unlike the camera calibration in mono mode the calibration of a stereo camera pair is necessary before performing any measurements The adjustment of an optional custom 3D coordinate system is only allowed after the associated stereo pair has been successfully calibrated The controls in this panel are as following Ei Stereo Pairing and Calibration Probes and Markers Paired with Cam 1 X pi Swap L R E Custom Coordinate System 9 Motion Removal il Detect in Grid Ge tereo Camera Calibration llllSNEREOeamersiseslibrted Figure 22 Stereo pairing and Calibration tab e Paired with Indicates which camera is the right one of the associated stereo pair and also allows changing it if more than
73. erform this operation press the Pair Probes button and select two point probes by left click Please note that this will not create a line if the total count of extension lines in the corresponding camera view would exceed the licensing limits Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 43 RCURY REAL TIME TRACKING SYsSsTem Ooo Figure 41 Probe pairing e Detect Markers Performs detection of markers according to the currently set parameters of the marker detection in the settings window under the project settings see 5 2 6 e Detection Settings Opens a dialog shown in Figure 42 which provides access to adjustment of selected parameters of marker detection These are identical to those found in the settings window under the project settings so for the descriptions of specific parameters see 5 2 6 a b o Figure 42 Dialog of detection settings showing a general detection parameters b general parameters including those specific for detection of lines and c general parameters including those specific for detection of edges Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 44 RCURY REAL TIME TRACKING SYSTEM 4 Import MercuryRT supports several types of imported data The
74. ersacecteunsdeed dnscucdeascantetnraneteentdentedmenmuentdeiahnaceaanbenninacucmnacians 34 3 8 Probes and Marker Sanie ear R A E E E E E 35 3 8 1 PON PO Ca nera E E E E ES 36 3 8 2 Rigid Plane Probe in the MONO mode ONy cccccccccssssssssssseeeececeeceessaueessseeeeeeeeeeesssanseeees 37 3 8 3 Une Proben aca a E E E E E E E A EE 37 3 8 4 Chain Probe in the mono mode only ccsimsesssssvorieisnaevuedeeaveniimannsnisceswanserumniedveniwiaienpeeuscatinns 38 3 8 5 Surface in the stereo mode only seesssnsssssseresssssrrressssrrrerossrrrrressrerrressserreresssrreresseerreeeseeree 38 3 8 6 Aled oe E E A E E E E EE E S 39 3 8 7 PIV Field in the mono mode only sesssssesssssenessssrsressssrrrerossrrrrresssrrrroesserrressserrreesserreresserereee 41 3 8 8 Force US States a exces acc E R E E E E E E ES E E 42 3 8 9 Strain Gauge in the mono mode ONY eeccccccccceceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeens 42 3 8 10 Neck Gauge in the mono mode only seessseeeececcecccscaeeeeeseeceeceeeeesssuaaesseeeeeceeeeeeens 43 3 8 11 OtNEr FUNCIONS aeriene aE EE ETE EEE E E 43 4 ND Ol E E E T E E E E E E E E E E E T 45 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 4 RCURY REAL TIME TRACKING SYSTEM 4 1 Image Files nena a E E E mnncens anaperanel 45 4 2 Video Fles meere ae E E AEE EEE AAE A EATE
75. est Rig Vibrography and Stress vs Strain Graph 2 3 b Jakub Rada 2014 09 08 Added I O services 2 3 C Jakub Rada 2014 10 17 Update of the graphical windows 2 3 d Jakub Rada 2014 11 12 Major overhaul 2 3 e MercuryRT collective 2014 12 12 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 3 RCURY REAL TIME TRACKING SYSTEM 1 Getting Started oe casein ores cree ecactecew i ca caauteauven sven cea cnceuecesrsesuesheaduces evevesisraresesscanecaaivexedenteanecerieuseniscens 7 1 1 Tracking System Hardware SEIUD vrscssconseecverersunnnesdsacneeruunnceonquonssadnumecsauneressanneednmnneouanianesvaunees 7 1 2 Tracking System Software Configuration cccccccccsssssssssseeccceceeeessaeeesssseeeeceeeeeesseuaaaesseeeseeeeeeeeeas 8 1 3 Measurement Preparation sss sssesssesssresrrosrrosrrossrossrossrosrrosrrosseossrossressrosseossrosseossrosseessessreesseent 9 1 4 Meas rement EXCCULION i niocsceresauunuietamencersansansasg tenets eE EEEREN EESE OEE EEEE TEEST 10 1 5 Measurement Evaluation deen eee ee er eee 10 1 6 Parameters Adjustment and Results Reevaluation ccccccccccccccceeeseeseseseececceceeesseauaeesseeeeeees 11 2 IVEY VOW aE EAA E E E A A 13 2 1 VIGIL Bal EE E E A E A E E EE E A E 13 2 2 Test RIE crnce aE EEA ENEE A AEAEE peunteeteqtedqepenntaecsaqdedeuonnntaecnnetedeeoeateeeusaten 14 2 3 O Services ae ces
76. g tools also referred to as tracking primitives is done through the panel of probes and markers in the camera window see 3 8 The meaning and usage of the specific types of primitives is described in the corresponding chapter They can be either placed manually or detected from the markers positioned on the surface of the measured specimen See 5 2 6 for details on how to properly set the detection of markers e Alignment of primitives between left and right camera of a stereo pair When measuring in the stereo mode it is necessary to align the tracked primitives in a way that their position on the surface of the measured specimen in the left camera of a stereo pair can be detected in the right camera as well This is indicated by green coloring of points and can be assisted by specifying their positions in the right camera manually by mouse For configuration of the settings of correlation between left and right camera see 5 2 2 2 e Selection of measured quantities Once the tracking primitives are positioned properly it is desirable to set the specified quantities which are to be measured and consequently displayed the graphs panel of the main window This is done through the context menu of these primitives and all supported quantities for a specific type of primitive are both listed in the context menu and described in the corresponding chapter see 3 8 Most primitives can have Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 2
77. ges 9 1 1 Amplitude Phase tab This tab contains amplitude and phase graphs e Amplitude graph Displays computed amplitude for each frequency Amplitude scale can be changed to log or decibel scale in context menu Frequency scale can be changed to octave in context menu as well thus performing octave analysis e Phase graph Displays computed phase for each frequency Phase scale can be changed between degrees and radians in context menu Phase Offset control enables the user to move position of zero phase At the bottom of tab value of amplitude and phase for selected frequency is displayed 9 1 2 Power Energy tab This tab contains power and energy spectral density graphs e Power spectral density graph Displays computed power density for each frequency Frequency scale can be again changed to octave in context menu thus performing octave analysis e Energy spectral density graph Displays computed energy density for each frequency Frequency scale can be once again changed to octave in context menu thus performing octave analysis a Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 87 RCURY REAL TIME TRACKING SYSTEM At the bottom of tab value of power density and energy density for selected frequency is displayed 9 1 3 Signal Info This tab contains info about analyzed data Mini
78. he Refresh and Detect button It can also be used for activation of Snap Frame button Either of the configured activation keys may be used for any of the aforementioned functions 5 1 5 Debugging This section contains parameters for debugging purposes The technical support may request a change of some of these parameters which should be avoided otherwise 5 1 6 Graph This section contains parameters of graph displays Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 51 RCURY REAL TIME TRACKING SYSTEM e Max Points In Graph Maximum count of points shown in the graphs A number of 0 sets it to unlimited but it is then likely to cause performance issues e Repaint Period Determines period of graph repainting in seconds when there are more points than the specified maximum e Line Thickness Line thickness of graph series e Min Scale Resolution Y Axis and Color Scale Minimal resolution of the scale on Y axis and also the color scale of computed grid areas Configured separately for different cases of computed values each taking both minimal and maximal value setting both to O disables this feature O Min Scale Resolution Px Minimum resolution of graph Y axis scale when computing values related to distance o Min Scale Resolution Percent Minimum resolution of graph Y axis scale when com
79. he context menu Vectors indicating the direction and magnitude of Tensor E1 and E2 computed in the edges of the rectangle may be displayed as well by setting them as shown in the context menu In the stereo mode strain gauges are replaced by surfaces see 3 8 5 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 42 RCURY REAL TIME TRACKING SYSTEM Figure 39 Strain Gauge 3 8 10 Neck Gauge in the mono mode only Neck Gauges shown in Figure 40 are represented by a rectangle divided by a line through one of its directions and a specified number of cross sections in the other direction It is used to detect an emerging neck during the tensile test as well as providing an effective tool for computing Poisson ratio The number of cross section and optionally even their length Enforced Width can be set through the context menu Additionally either endpoint of the dividing line can be fixed making its position in deformed images remain constant ignoring any local deformations Figure 40 Neck Gauge with highlighted neck 3 8 11 Other Functions The following is a brief overview of all the other buttons located in probes and markers panel which are not associated with creation of new primitive of a specific type e Pair Probes Creates an extension line by pairing two point probes as shown in Figure 41 To p
80. head These are applied during the test Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 67 RCURY REAL TIME TRACKING SYSTEM General Preload Cycling Channel Supervision v Enable Cycling Cycling Parameters First X head Limit Halt in First Limit Second X head Limit 0 Halt in Second Limit 4 gt 4 gt 4 gt gt 4 gt Number of Cycles 1 Figure 59 Cycling settings tab e Enable cycling Toggles whether the cycling parameters are active and applied By default this option is NOT active e Cycling parameters This sub section contains the following O First X head Limit Adjusts the first absolute position limit of the cross head during cycling Halt in First Limit Adjusts the waiting time of the cross head in the first position limit Second X head Limit Adjusts the second absolute position limit of the cross head during cycling O Halt in Second Limit Adjusts the waiting time of the cross head in the second position limit O Number of Cycles Adjusts the number of repeated cycles 6 2 2 4 Channel Supervision Settings The tab of channel supervision settings shown in Figure 60 contains parameters of an optional automatic stop of the cross head after a defined termination condition is met Each of the termination conditions takes into consideration a spec
81. hone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 17 RCURY REAL TIME TRACKING SYSTEM Run Stop Launches or stops a new test during which recording of frames from connected cameras takes place as well as recording of measured data from connected test rig and computation of data to be displayed in graphs above It is not possible to append new frames to the existing measurements so a permission to clear all recorded data is requested on consecutive presses of the Run button The arrow on the right of the button opens a context menu with alternate modes of running a new test O Run with Batching In this mode frames are uniformly distributed among batches as they are being recorded The number of frames in a single batch is specified in the numeric control which appears on the left of this button when this option is selected O Run with Timer Same as the previous mode with the difference that the time between consecutive batches is specified in the numeric control which appears on the left of this button when this option is selected O Run in Snap Mode In this mode frames are not processed automatically as they arrive from connected cameras but only when the Snap Frame button is pressed It appears on the left of the Run button when this option is selected e Recompute Stop Performs new computations using the recorded frames beginning by th
82. iated with the current project The background color of this button also indicates whether they are currently running or not Shutter ms Adjusts the shutter speed of associated camera Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 24 RCURY REAL TIME TRACKING SYSTEM Gain ISO Adjusts the sensor gain of associated camera e FPS Adjusts the frame rate of associated camera e High SNR Adjusts the number of consecutive frames which are taken as input to optical data averaging The output of such averaging is a single frame with reduced amount of noise which is then received instead of the original unprocessed frames The use of this feature decreases real FPS e Camera Opens a window of advanced camera properties depending on the type of associated camera Cameras capable of high speed recording also have such functionality accessed through this button e AOI L x T AOI W x H Adjusts the position of top left corner and size of AOI short for area of interest In most cameras decreasing AOI increases the maximum allowed frame rate e Activate Apply AOI Selection Activates Applies the AOI selection in associated camera The selection is performed either by manual adjustment of the associated values or by moving the green border lines by mouse Activating the AOI selection also resets
83. ified limit of a value on one of the input sensors Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 68 RCURY REAL TIME TRACKING SYSTEM General Preload Cycling Channel Supervision v Enable Channel Supervision Channel Supervision Parameters Sensor Force N v Temination condition Above teminates w V Limit 0 00 N Figure 60 Channel Supervision settings tab Enable Channel Supervision Toggles whether the channel supervision parameters are active and applied By default this option is NOT active e Channel Supervision Parameters This sub section contains the following o Sensor Specifies the type of the sensor to be supervised O Termination condition Specifies the condition of termination to be fulfilled Can be set to one of the options described in Figure 61 o Limit Adjusts the limit value of the supervised quantity Below terminates when value is lower than limit Above teminates when value is higher than limit Decrease terminates when value will decrease by defined limit in 7 Rise 2 tenninates when value will ise by defined limit in 4 Decrease unit teminates when value will decrease by defined limit in unit J teminates when value will ise by defined limit in Junit Figure 61 Terminating conditions of selected senso
84. imen The resulting markers are then named after the detected codes o Cross Detects contrasting crosses in the image o Dot Detects contrasting dots in the image O Line Detects specified number of lines with either vertical or horizontal direction O Edge Detects specified number of edges with either vertical or horizontal direction e g h Figure 52 Marker detection types a circle marker b QR code c cross d dot e vertical lines f horizontal lines g vertical edges and h horizontal edges e Automatic Pairing Type of automatic pairing of detected markers It determines the desired length of resulting extension lines as shown in Figure 53 Note that only specific cases of Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 59 RCURY REAL TIME TRACKING SYSTEM marker placement may effectively utilize this feature Can be set to one of the following options O Off Deactivates automatic pairing o Shortest Pairs the detected markers in such a way that the resulting lines are as shortest as possible O Optimal Pairs the detected markers in such a way that the resulting lines are neither shortest nor longest O Longest Pairs the detected markers in such a way that the resulting lines are as longest as possible o Random Pairs the detected markers randomly
85. in Euclidean length DoubleLine ref between the specified line and the ref line in percent May be null when one of the lines is invalid DoubleLine DoublePoint DoubleLine Translates the line by the specified point DoubleLine DoublePoint DoubleLine Translates the line by the specified point in the opposite direction Table 5 Lists all operations available for the DoubleLine return type The DoubleLine type represents a line which may or may not have defined end points 11 3 4 3 Double Double Operation Return Type Description HasValue Bool Value Double Indicates that the Double has a valid value Returns the value of the Nullable Double HasValue should be checked for validity Table 6 Lists all operations available for the Double i e Nullable Double return type The Double type represents a double precision floating point number which may or may not be defined 11 3 4 4 Double Math Operations Returning Double Double Double Double Double Double Double Double Double Math Abs Double Math Acos Double Math Asin Double Math Atan Double Math Atan2 Double y Double x Sobriety s r o Description Returns the result of adding two floating point numbers Returns the result of subtracting two floating point numbers Returns the result of multiplying two floating point numbers Returns the result of dividing two floating point numbers Returns the absolute value of a double precis
86. indow as well and contains four points with default coordinates Position in mm of each point can be set in the bottom left corner of dialog X mm and Y mm when a point is selected Adding more points increases the precision of the coordinate system because errors of individual points are statistically eliminated T Load Qf Save E Custom Image Point Plane Offset mm 0 EX Detect Grid Refresh Frame By Detect Calibration Parameters from QR OK Figure 25 A calibration grid detected in Coordinate System window The controls located in this window are described as following e Load Loads coordinate system points from a specialized CSV file Save Saves coordinate system points to a specialized CSV file e Custom Image Loads a custom image to serve as a layout for coordinate system points S Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 32 RCURY REAL TIME TRACKING SYSTEM e Point Enables to add new coordinate points by mouse Selecting the existing points while Shift button is pressed removes them instead e Plane Offset mm Allows adjustment of the real displacement of the measured plane relative to the plane used to set coordinate points A positive value indi
87. ing value e Decimal Point Not Comma Indicates if floating point or floating comma is used Example of sent message 1_5 70104494781388 126 860906397332 r n Example uses default output format Number 1 means camera ID The first value 5 70104494781388 follows after underscore Then follow two value delimiter signs It means the second value is not computed After that the last value 126 860906397332 follows End of message is specified by message delimiter r n Mercury Digital Output TCP IP COM port service parameters 2 Port Name Baud Rate Parity Data Bits Stop Bits Handshake 4 Output Format Message Delimiter Value Delimiter Info Delimiter Not Computed Value Decimal Point Not Comma Connection Parameters Finish Cancel Figure 68 Parameters of COM port connection with output format Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 75 RCURY REAL TIME TRACKING SYSTEM 7 1 3 DOLI Binary Serial Output COM port Service DOLI Binary Serial Output Service implements DOLI protocol for sending up to four measured values to DOLI EDC device Configuration of parameters can be done in Add I O Service wizard illustrated in Figure 69 These are the parameters for formatting of measured values and COM port used for communication with DOLI EDC device Settings of COM port include Port
88. ion floating point number Returns the angle in radians whose cosine is the specified number Returns the angle in radians whose sine is the specified number Returns the angle in radians whose tangent is the specified number Returns the angle in radians whose tangent is the quotient of two specified numbers Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 103 RCURY REAL TIME TRACKING SYSTEM Math Ceiling Double Math Cos Double Math Cosh Double Math Exp Double Math Floor Double Math Log Double Math Log Double a Double base Math Log10 Double Math Max Double Double Math Min Double Double Math Pow Double a Double power Math Round Double Math Sign Double Math Sin Double Math Sinh Double Math Sqrt Double Math Tan Double Math Tanh Double Math Truncate Double Returns the smallest integral value that is greater than or equal to the specified double precision floating point number Returns the cosine of the specified angle in radians Returns the hyperbolic cosine of the specified angle in radians Returns e raised to the specified power Returns the largest integer less than or equal to the specified double precision floating point number Returns the natural base e logarithm of a specified number Returns the logarithm of a specified number in a specified base Return
89. layed as a colored map where the values are mapped to their corresponding colors from the attached color scale This can be seen in Figure 35 Only a single type of computed values is displayed at a time Right clicking an area switches between displayed computed values Initially the quantities in graphs represent the average of values computed in a single area but individual points may be selected for display in graphs by left clicking them when measurement is not running As for the attached color scale itself its placement can be adjusted by dragging it with the mouse and it can be rotated by the right mouse button Clicking the control points of a color scale switches between local and global minima and maxima and dragging those control points sets a custom value These settings are then remembered upon re computation Note however that the initial values are set in respect with minimal ranges specified in the system settings under the graph parameters see 5 1 6 Aree 0 Tensort 1 w Figure 35 Strain tensor E1 distribution on natural and speckle pattern specimens Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 664 34 Kurim Czech Republic Support 420 604 359 827 40 RCURY REAL TIME TRACKING SYSTEM Display of principal orientations of the computed tensors is available for tensor E1 and E2 In the mono mode orientations are displayed in the camera view while in the stereo mode they are displayed in the
90. le image sequence or images from MercuryRT Project directory structure It can also be used to import externally measured data into the currently opened project A more detailed description can be found in chapter 7 e Export Data Exports all measured and computed data into a specified CSV file The format of exported data is fully compliant with common spreadsheet editors such as MS Excel Settings Opens the window for adjustment of MercuryRT settings both those related to the currently opened project if any and those applied regardless of the opened project see 5 e Examples Opens Examples Browser with available examples demonstrating capabilities of MercuryRT and typical use cases see 8 About Shows information about version of the software and active license 2 2 Test Rig Represents a panel in the main window which provides means to control DOLI DoPE driven testing machines or just display data from analog digital inputs in case of the absence of a testing machine For detailed description of the Test Rig configuration and control see 6 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 14 RCURY REAL TIME TRACKING SYSTEM 2 3 I O Services MercuryRT allows sending user defined values of measured quantities to aselected output The panel of I O Services handles creation of I O services
91. lse at the very moment the camera started to capture its image and all other cameras are set to a slave mode corresponds to the ExternalTrigger mode above This mode does not require an external device a simple cable can do the job hence increases the ease of use Works for any kind of camera interface TTL n TTL J Master Ethernet m l FireWire i a nite O A PC a PATA f Ji PC Ethernet p oe PC DATA m Wl O Slave Ethernet J i a c b Figure 85 Schematic representation of HW synchronization set ups a FWBusSync b ExternalTrigger and c MasterSlave 10 3 2 Additional Synchronization Settings Further synchronization options can be found in Settings gt System Settings gt Camera Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 91 RCURY REAL TIME TRACKING SYSTEM Camera Synchronization Camera Sync Mode MasterSlave Master Camera ID CameraFake 0 Slave Camera Trager Graph Input Pin Number 0 Recorded Data Player Rising Not Falling True neas Mode Fixed ShutterEdge Jai Master Camera Trigger Output Pin Number 0 Output Pin Polarity Ethemet Cameras Network Packet Size MTU Camera Link Interface Name Camera Display Refresh Rate Hz Parameters of live cameras Camera Synchr
92. lysis based on DIC Digital Image Correlation The features of areas are In the mono and stereo mode O Measurement of positions and theirs displacements from the reference positions O Measurement of Lagrangian finite strain tensors O Display of principal orientations of the computed tensors e In the stereo mode O 3D reconstruction Each area is specified using one blue include polygon an area where points for analysis are generated and arbitrary number of red exclude polygons areas where points are not generated Exclude polygons are shared between all areas and have higher priority than include polygons The generated points are displayed as yellow dots on the surface of an include polygon They are computed separately so the computational load is heavily influenced by their count the more points there are in a grid the more time is required to compute a single deformed frame The count Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 39 RECURS REAL TIME TRACKING SYSTEM of generated points can by adjusted by changing area grid spacing see 5 2 5 They can also be hidden from a camera view by enabling the corresponding option in the context menu of a respective area Figure 34 Include area overlapped by a single exclude area The measured values are computed for each point of an area and disp
93. ment in Z mm Amplitude Phase Power Energy Signal Info Amplitude Graph mam Area 1 Displacement in Z mm I 1 4 sie pipes Area 1 Amplitude mm maa ERE aii a ine aar Amplitude mm Frequency Hz 10 3 Phase Graph E Area 1 Displacementin Z mm Phase deg gie pa Area 1 Phase rad PI at pect a A P pe aii 1000 2000 3000 4000 5000 6000 7000 Frequency Hz Amplitude 0 090mm Phase 0 189 rad n Phase Offset Subset Size 7 Select Frequency Settings Figure 81 Vibrography tool window Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 86 RCURY REAL TIME TRACKING SYsTem Data for vibrography analysis is selected using Selected Series control By default whole series is analyzed To analyze only selected subset check Subset control and adjust position and size Size control of chosen subset Using subsets can be useful when analyzing data where frequencies change over time as seen in Figure 82 ANAL A AN AAAANANAAANAAARA ANNANAAAAA YN VVVUVVV UV VV VY V VVV VV AAA LYS Saw Figure 82 Result of the spectral analysis performed on different segments in data generated with an increasing frequency Computed data is shown in form of several graphs numbers and ima
94. micomaiewboren eivomisiewbereeeiomaiertemesin 89 10 3 Camera SYNC cnoe n ETER E EI EA ETE EAE ETRA EEA EATE EI ERE ER nS 90 10 3 1 Camera Synchronization Modes js isacvsciinsnesinereccrsaaniemnmconariannaenannsnnnnrmennaaanimen 90 10 3 2 Additional Synchronization Settings a esccssssazscanniaviuanavardennarandvancansdvaasvarinenssarananmeawivarcvaden 91 10 4 Synchronization Box Vibrography Applications ccccccccccssssssssssseeececceceeesseuaaeessseeeeceeeeeeees 93 10 4 1 Phase Sweep Mode enr ran nE E EE E EEE EEEE REE EEL 93 10 4 2 Single Phase Mode seuss tars tdeg coarcaase cop hevencesactens aaueeconcneteannduletedoscnrd eamsauentinscnisteennecuneineuneaeiaene 94 10 4 3 Connection of the Synchronization BOX ccccccccccsssssssseseeeeccceeeeeeseaeaeesseeeceeeeeeesseaaaaeees 95 10 4 4 Advanced Synchronization Box FUNCTIONS sssecceccccecccseuaeeessseeeeccecceeesssaaaaaaaseeseess 96 11 EXPFESSIOMN EGUEON sinsssssonrssaiwansieiasenasasnasusswanasvensdninuasonssanaiiassnndeinesvaueiasensss sannvaveosssnuiasoisaderaesvauneeis 97 11 1 VETO T 97 11 2 Expression VV ON ol OW pecaecaceatsaianenasceannmeosmasneesquanescsanasenssenapaianmmaverasaniecgansannes sae nantmeaumanernnate rene 97 11 2 1 ENE SSIO Mi EdItOr ACCESS ay car eener AE S E E EE E EEEE EE EEEE EE E 97 11 2 2 EXPrESSIONM OPET ITION S aer ieee E AEE EE EEE EEEE EEEE EEEE ERENER EE R 97 IES CoV CAN ose velar a A E E E E E nadie sane nasenaenentne 100 11 3 1 Probe
95. mples Expression Meaning HT28 T23 Length Returns the Euclidean distance between two point probes named T28 and T23 The probes belong to two different cameras When properly calibrated this allows distance tracking from very distinct angles TestRigLoadN Current testing machine force load in N is entered onto the Y axis Math Atan2 A7 LengthInY Value Computes the angle in rad which is held by the A7 LengthInX Value specified A7 extension line within the current coordinate system Table 9 Lists examples of valid expressions 11 5 Expression File Format The expression file format mxp MercuryRT Expression is as following lt xml gt lt VE gt lt VES gt ExpressionString lt VES gt lt VET gt OutputQuantity lt VET gt lt VES where e ExpressionString is the actual text representation of the expression as seen in the Expression field in the UI e OutputQuantity is the name of the output type Please note that an expression may also be edited in a text editor directly if needed 11 6 Limitations e Only some probes are currently supported see 11 3 2 for details e Only 2D probes are supported 3D probes are planned for the future Only positional data is available at the moment see 11 3 2 for details Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 105 RCURY REAL TIME
96. mport Tool Measured Data Import Tool seen in Figure 45 allows any necessary changes to the alignment of imported measured values with values already present in the opened project Measured Data Import Tool consists of two graphs The upper graph shows a series of measured values in the opened project The series can be changed using selected series control containing list of available measured values in the opened project The lower graph shows imported data from CSV file The alignment is affected by location of red limiters Their position can be adjusted by Start and End numeric boxes Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 47 RCURY REAL TIME TRACKING SYSTEM Measured Values _T1 Displacement Euclidean mm ye up ap up ip ap op up aip op ml 3 Selected Series T1 Displacement Euclidean mm Imported Values Figure 45 Measured Data Import Tool for setting the alignment of externally measured data Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 48 RCURY REAL TIME TRACKING SYSTEM 5 Settings The following chapter is an overview of settings which can be configured through the settings window seen in Figure 46 which is accessible from the main panel The individual
97. mum The minimum value in data Maximum The maximum value in data Peak The maximum displacement from zero in data Peak to peak The difference between maximum and minimum Effective value The effective value of data also called root mean square Crest factor The crest factor of data Crest factor is a measure of a waveform showing the ratio of peak values to the average value In other words crest factor indicates how extreme the peaks are in a waveform Displayed values are averages of computed values for each point when performing full field analysis 9 1 4 Preview panel Preview panel contains computed data previewed on reference image Both amplitude and phase for selected frequency is displayed When previewing data computed for a Point Probe or a Line Probe information about amplitude and phase in the selected frequency is displayed When previewing data computed for full field area amplitude and phase are computed in whole area and displayed using a color map In the phase preview bottom the reference point can be selected When the reference point is selected phases are computed relative to the phase of this point the phase of the reference point will be zero Otherwise phases are computed according to the start of the measurement 9 1 5 Other controls Frequency Selects a frequency from the computed frequencies Many displayed data is corresponding to this frequency Setti
98. n Input Value Max Input Value 4 Position Channel mm Channel Number Min Input Value Max Input Value 4 Temperature Channel C Channel Number Min Input Value Max Input Value a Digital Input COM Port Port Name Baud Rate Parity Data Bits Sobriety s r o Namesti 1 Kvetna 63 664 34 Kurim Czech Republic 63 Stop Bits Handshake Active Test Rig Type of the currently active test rig for sensor readout and control Figure 54 System Settings Active Test Rig settings Phone 420 541 231 698 Support 420 604 359 827 sales mercuryprogram eu tecs mercuryprogram eu 6 2 RCURY REAL TIME TRACKING SYSTEM Doli EDC The following is a description of all attributes which have to be set before running a new test with DOLI DoPE driven testing machine To select the tension testing machine specify the option Doli EDC as active test rig 6 2 1 Test Rig panel Represents a panel in the main window which provides means to control DOLI DoPE driven testing machines The recording of all displayed data takes place automatically when a test is running regardless of the movement of testing machine cross head Explanation of controls within Test Rig panel illustrated in Figure 55 Force N Displays the actual force being applied to the test specimen in real time Position mm Displays the actual position of the testing machine cross head in real time Extension mm Displays the
99. n for a stereo camera in time domain e Maximum Accepted Triangulation Error Maximum allowed triangulation error of correlated points A value of 0 will disable calculation of this error 5 2 3 Width Measurement This section contains parameters of width measurement 5 2 3 1 Neck Detection This sub section contains parameters of neck detection e Select longest section If enabled set to true selects the longest section instead of the shortest one Select section based on absolute change If enabled set to true selection is based on absolute change in section s length instead of relative change in section s length 5 2 3 2 Width Detection This sub section contains parameters of the detection of width points e Use anchor points to get perpendicular location Is transformation estimation moved based on anchor points movement 5 2 3 3 Width Correlation This sub section contains parameters of correlation of width points The correlation of these points takes place in time domain For explanation of these parameters see 5 2 2 1 5 2 4 Grid Calibration This section contains parameters of the calibration grid Grids with some of the possible combinations of these parameters are displayed in Figure 51 Calibration grids with attached QR codes have the capability of automatic detection of their parameters so they do not have to be set manually This feature is activated by pressing the corresponding button
100. nd the calibration recomputed which is shown in Figure 23 Computed calibration can be seen on right panel Dialog is closed and computed calibration accepted by clicking on Apply Calibration Fi Load Q Sme f Load images Parameters of casen mzn T J 0 00 08 1 0000 Focal lang 375487373487 000 00 100 015 Prepel pert 1082 36 513 3 az S 2059 0 0000 015 Radd diutertore 0 9545 0 0000 0 0000 0 00 09 oo 00000 00000 0 00 00 0 00 00 00000 00000 000 00 0 00 00 Focallengh 792 83 792 23 port 1048 17 513 21 E 0 8643 0 0200 0 0000 00000 0000 00000 0 00 00 000 00 00000 00000 SSRESSSRSSSSRSS F 4464464646466 666 66666 BEES va va vi vy 1 v v1 vi y v t v1 va A 1 y t va va vi y v 1 vo SESS Calieeston Ged Type CrciGad v Sejorn 12 S x3 Ure Detercefees 1000 RB Detect Catecaton Pacreters fon OF Caltenton Gii Tipe Oei v Srefkcut 12 x 3 1000 i Detect Calibration Paramete trom GR Aoneage Calibration Eror px 0 1627 Apply Calibration Conos Average Calbeston Gror pa 0 1616 Apply Calbraton Creel Figure 23 Re computation after frames with a large error were unchecked Some other features of this window include e Load Loads calibration from a file Can be used to load calibration from a different project e Save Saves computed calibration to an XML file e Clear All Removes all information about the currently detected calibration grids except their corresponding loc
101. ngs Opens a dialog with the most common vibrography settings All settings can be found in project settings see 5 2 7 Select Frequency Closes vibrography tool window and uses data computed in selected frequency as new data series This data can be then previewed in main window graphs mm or 3D as well as in camera windows Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 88 RCURY REAL TIME TRACKING SYSTEM 10 HW Synchronization 10 1 Introduction Most of the time internal camera synchronization is all that is needed This means that when certain FPS is set for a camera after starting capture each corresponding interval a camera image will be taken This is sufficient for low speed single camera tests However other scenarios may require some sort of synchronization for instance e Cycling test where an image is taken in certain phase after given number of cycles e High speed tests where the start must be precisely given e Multi camera set ups especially stereo cameras where images from the left and from the right camera must be taken at exactly the same time e Capture of vibration tests using regular soeed cameras where a phase must be sampled in precisely given intervals Synchronization is about sending an electrical signal to camera input pin to signalize when an image is to be taken Please no
102. of the output format Service parameters are adjusted using Add I O Service wizard which is displayed in Figure 64 There is no restriction to the number of added services of the same type with the exception of Mercury API which can be added only once Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 71 RCURY REAL TIME TRACKING SYSTEM Choose I O Service Outputs Analog Output Mercury Digital Output TCP IP COM port DOLI Binary Serial Output COM port Protocols O HP Video COM port Mercury API TCP IP COM port Cancel Figure 64 Add I O Service wizard 7 1 1 Analog Output Service Analog Output Service allows sending of a single value via D A converter The single value is sent every time some new data are computed namely during real time tests and recomputations MercuryRT supports D A converters from Advantech and MCC corporations Before using the MCC converter the Instacal program included in MercuryRT installation file must be used to create the configuration file Analog Output Service has several parameters which are configured in Add I O Service wizard shown in Figure 65 The parameters are described below Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu
103. one is present Setting it to none exits stereo mode e Swap L R Swaps the left and right camera of the associated stereo pair e Custom Coordinate System Activates the use of a custom 3D coordinate system see 3 7 2 e Motion Removal Toggles computation of displacement for the points of custom coordinate system Measured data is then computed relatively to the displaced coordinate system effectively making the data unaffected by the motion and rotation of the object on which the points of custom coordinate system are positioned This feature is available only if such a custom coordinate system is active e Detect in Grid Sets position and rotation of the coordinate system using a calibration grid Calibration grid parameters are used from project settings see 5 2 4 After a successful detection O point is located in a corner of grid X axis is in direction of width of grid and XY plane is equal to grid plane This feature is available only if a custom 3D coordinate system is active and when it is set using this method it cannot be further manipulated until disabled again e Stereo Camera Calibration Opens window for calibration of the associated stereo pair see 3 6 The current state of this calibration is indicated by the colored display on the right of the button 3 6 Camera Calibration The camera calibration window is used for calibration of camera lens distortions as well as geometry of stereo camera pairs Ple
104. onization Parameters of camera synchronization mode Figure 86 Camera Settings Window 10 3 2 1 Camera Synchronization Mirrors the settings described above in 10 3 1 10 3 2 2 Slave Camera Trigger Additional settings used for the MasterSlave slave cameras and ExternalTrigger all cameras synchronization modes Input Pin Number Camera input pin number to receive the controlling TTL pulse Commonly between 0 2 e Rising Not Falling TTL pulse polarity If set to true the triggering pulse is positive negative otherwise e Mode Camera capture mode when triggered by an external pulse Can be set to one of the following options O FixedShutterEdge The shutter speed is determined by the actual setting in the Camera Panel Shutter ms O IntegrationLevel The camera shutter is opened for the duration of the pulse Hence exposure can be controlled via the external triggering source O BulkCapture As long as the pulse lasts the camera captures images 10 3 2 3 Master Camera Trigger Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 92 RCURY REAL TIME TRACKING SYSTEM Additional settings used only the MasterSlave mode the master camera e Output Pin Number Output pin camera number typically 0 2 the default value is 0 e Output Pin Polarity True for inverted pulse
105. onization cable if more than one camera is connected and a high speed test will be measured Optionally a testing machine can be connected for evaluation of force data and a possibility of controlling it remotely A possible setup is shown in Figure 1 For added contrast it may be necessary to apply a speckle or other kind of medium to high contrast pattern on the specimen Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 7 RCURY REAL TIME TRACKING SYSTEM Figure 1 Example of a typical tracking system setup 1 2 Tracking System Software Configuration Once the hardware part of the tracking system has been properly set and MercuryRT open and running a configuration of the tracking system from the side of the software is in place The following aspects related to the setup of connected cameras are mandatory and consist of e Camera selection Assisted by a device selection dialog see 2 1 if more than one camera is connected or a testing machine is present If only one camera is present it is automatically selected for the newly created project e Field of View FOV adjustment Performed manually according to specific requirements of the test The camera placement and the camera lens affect the FOV The FOV should correspond to specific requirements of the test A helpful guideline is the size of expected deforma
106. orizontal 5 2 7 Vibrography Method Selects the method of the Discrete Fourier Transformation by which is the spectrum calculated o Single Spectrum Spectral analysis is calculated in the whole length of the sequence O Welch s Method Spectral analysis is calculated in parts All parts are added together and averaged 7 Data Step Sets the size of the data step in points between the segments 7 Window Size Sets the size of the segment from whole data e Window Type Selects the window function that will be used for windowing of data before performing the spectral analysis Supported window functions are O Rectengular Window Hann Window Hamming Window Tukey Window O O OO O Blackman Window o Flat Top Window e Sweep Subset Overlap Overlap of consecutive subsets during export of sweep in e Octave Analysis Sets the parameters of the octave analysis O First band nominal frequency Hz The center frequency of the first octave band O Last band nominal frequency Hz The maximum allowed frequency for the center of the last octave band Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 61 RCURY REAL TIME TRACKING SYSTEM O Octave fraction number The number of created bands between two consecutive main octave bands The center frequency of each main octave ban
107. parameters related to the speed and direction of the testing machine cross head It is divided into several sub sections described underneath e Preset name Contains modifiable name of the configuration file Must be unique e Test X head movement Adjusts the direction of movement of the cross head effectively specifying the type of the test tension or pressure Can be either upwards or downwards e Speed Adjusts the speed of the cross head under the following circumstances O During test Speed utilized during the test O Manual control slow Speed during manual control O Manual control fast Speed during manual control when Ctrl button is held down e Mouse X head movement Adjusts the speed of the cross head when scrolling the mouse o Slow Step The slow step speed of the cross head O Fast Step The fast step speed of the cross head when Ctrl button is held down e Original position Specifies whether the cross head should return to its original position after the test General Preload Cycling Channel Supervision Preset Name Name Default Test X head movement Direction Up Speed Down During Test 5 00 Manual Control Slow 1 00 Manual Control Fast 10 00 Mouse X head Movement Slow Step 1 00 Fast Step 10 00 Original Position Retum to original position after test Figure 57 General settings tab 6 2 2 2 Preload Settings Sobriety s r o Namesti
108. pped to this value If a relative value is sent to the output sets the value assigned to maximum of the analog range For example if set to 85 and the analog range is 10 V a value of 85 will be assigned 10 V Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 80 RCURY REAL TIME TRACKING SYSTEM Digital Output COM2 ESET Cam 0 A1 Length Absolute Extensii v M al 127 0 0 1 5854 Min Output Value Absolute HP Video COM3 ee Min Output Value Relative Max Output Value Relative Value which will be sent to the analog output Figure 75 Output values of Analog Output Service Advantech MCC HP Video Service can be adjusted to send up to four measured values illustrated in Figure 76 e L extension value Q transversal strain e A second extension value e B second transversal strain T1 Displacement Euclidean mm T1 Width Euclidean mm none none Figure 76 Output values of HP Video Service DOLI Binary Serial Output Service allows transmission of up to four values A D illustrated in Figure 77 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 81 RCURY REAL TIME TRACKING SYSTEM
109. ppens after each virtual period The frequency is recorded into the project file and can be shown in the X axis in graphs graph context menu gt X axis unit gt Excitation Frequency Phase Step deg Sets the angle step the range is 0 1 36 e Detectable Frequency Hz Estimates the maximal frequency which can be analyzed for the given settings e Periods to Capture Sets the number of time periods to capture in one run The default is O which means unlimited Estimated Frame Count Estimates how many frames will be stored into the project based on current settings e Take every Nth Period Sometimes it is desirable to force a delay of the frame capture 10 4 2 Single Phase Mode The Single Phase Mode is activated by the Capture Mode combo box The mode is primarily used for detailed observation of the vibrating specimen in specified periods It effectively stops the movement of the sample in the defined phase The panel contains the following controls e Enabled see 10 4 1 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 94 RCURY REAL TIME TRACKING SYSTEM e Input Signal Frequency Hz see 10 4 1 Selected Phase deg Specifies the phase angle in degrees which should be displayed in the camera window Figure 89 Synchronization Panel in the Single Phase
110. puting values related to relative change O Min Scale Resolution mm in 3D only Minimum resolution of graph Y axis scale when computing values related to distance in measurements on stereo cameras O Min Scale Resolution Nondimensional Min resolution of graph Y axis scale when computing nondimensional values e Color Scale Levels Number of levels on the color scale assigned to displayed grid areas e Render Graphs in Real Time Toggles graph rendering during computation Disabled reduces performance load and therefore shortens evaluation time e Lowest Decibel Value Lowest dB value to be displayed in a graph Must be negative Yield Strength Beginning Offset Only values larger than this offset are used for computation of Yield Strength Offset is specified as a percentage of maximal Load N 5 1 7 Recorded Data Player This section contains parameters of Recorded Data Player e FPS Playback speed in frames per second 5 1 8 Examples This section contains parameters of MercuryRT use case examples e URL URL of online examples for downloading e Examples Local Path Local path of examples folder 5 1 9 Language This section contains language of user interface Changes in these settings will be applied after restarting MercuryRT program Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogr
111. r n Mercury Digital Output TCP IP COM port service parameters 4 Connection Parameters Server Address Port Number 4 Output Format Message Delimiter Value Delimiter Info Delimiter Not Computed Value Finish Cancel Figure 67 Parameters of TCP IP connection with output format 7 1 2 2 COM Port Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 74 RCURY REAL TIME TRACKING SYSTEM The COM port option of Mercury Digital Output Service runs on specified COM port and sends message in user defined format every time some new data are computed namely during real time tests and recomputations Mercury Digital Output Service has several parameters which are configured in Add I O Service wizard shown in Figure 68 They represent settings of COM port and output message format Settings of COM port include Port Name Baud Rate Parity Data bits Stop bits and Handshake They must correspond with COM port settings in operation system for its proper function Output message format consists of e Message Delimiter Delimits the entire message i e one package of data for one time moment Value Delimiter Delimits each computed value Info Delimiter Delimits each provided information camera ID computed values etc e Not Computed Value Specifies the value which is used for not computed miss
112. ration the corresponding graph series will not be visible until the test is over Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 41 RCURY REAL TIME TRACKING SYSTEM KJ gt t ty m m e t FRE Figure 37 PIV Field displacement with displayed vectors 3 8 8 Force Gauge A Force Gauge shown in Figure 38 is a modification of a line probe see 3 8 3 used for computation of simulated tear force This simulation works as a transducer complementing the values measured by a connected test rig or replacing them if no such machine is present The resulting force is computed from the extension of the force gauge over time and a specified stiffness and can be displayed on the X axis of any graph by selecting the corresponding option from its context menu see 2 6 1 The stiffness of the force gauge can be modified through its context menu It is available both in mono and stereo mode and only one may be present Figure 38 Force Gauge 3 8 9 Strain Gauge in the mono mode only Strain Gauges shown in Figure 39 are represented by a rectangle and used for evaluating of Lagrangian finite strain tensors as well as Poisson ratio The information about the size of the strain gauge in physical units mm is always available as a label located next to it The size of the rectangle can be set through t
113. reliability e Correlated transformation type Specifies parameters that are correlated The precise meaning of the terms used in these descriptions can also be found depicted in Figure 48 To avoid problems during computation the transformation type should be estimated according to expected movement of measured specimen Can be set to one of the following options O Omnidirectional translation Defines displacement in both axes vertical horizontal Horizontal translation Defines horizontal displacement in relation to camera Vertical translation Defines vertical displacement in relation to camera Omnidirectional scale and translation Defines either stretch or contraction with combination of displacement in both axes Horizontal scale and translation Defines either stretch or contraction in horizontal direction with combination of horizontal displacement Vertical scale and translation Defines either stretch or contraction in vertical direction with combination of vertical displacement Horizontal scale and omnidirectional translation Defines either stretch or contraction in horizontal direction with combination of displacement in both axes Vertical scale and omnidirectional translation Defines either stretch or contraction in vertical direction with combination of displacement in both axes Full affine transformation The affine transformation type contains all three types together translate scal
114. rrect solution change the correlation speed to fastest or fast to limit the searched area Also try removing the repeating pattern from the measured specimen e f incorrect locations have been computed in the right camera while adding primitives try dragging primitives in the right camera close to theirs correct locations locations Table 1 Solutions to the most common problems Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 12 RCURYS REAL TIME TRACKING SYSTEM 2 Main Window First and foremost the main window of the application provides basic project management functionality such as project creation loading and saving Its other important features include a real time display of the values measured on a connected testing machine controls which handle starting and stopping of the test and graphs for displaying computed data most of which are also fully functional in real time As portrayed in Figure 2 the main window is composed of several distinct parts Test Rig I O Services Menu Bar New Project L Load Project gh Save Project ab Import Data ap Export Data Examples About Graph mm Graph Graph H Graph mm s Graph mm s 2 Stress vs Strain Graph 3D Graph Graphs Panel Seek to Reference R gt m id gt i ab Set As Reference ae Set As End Active Meas
115. rs 6 3 Analog Digital Input Analog or digital input are other options how to readout values from testing machine MercuryRT supports MCC and Advantech A D converters for analog input Digital input is realized using serial communication COM port Active Test Rig see 6 1 have to be set to appropriate option e Mcc Analog Output or Advanetch Analog Output for getting data from A D converter e Digital Input for getting data using serial communication 6 3 1 Test Rig Panel Test Rig panel just displays data from the analog digital input in case of the absence of a testing machine supporting DOLI DoPE Control of a testing machine cross head is not possible therefore controls button are disabled Only Tare button is enabled for resetting of values see Figure 62 E a a a a E a Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 664 34 Kurim Czech Republic Support 420 604 359 827 69 sales mercuryprogram eu tecs mercuryprogram eu RCURY REAL TIME TRACKING SYSTEM Test Rig 1 0 Services Mcc Analog Input Force N Position mm Extension mm Tare All v A Preload e h A Default fe Ra Figure 62 Test Rig panel Active Test Rig Mcc Analog Input Disabled control buttons Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 70 RCURY REAL TIME TRACKING SYSTE
116. ryprogram eu 84 RCURY REAL TIME TRACKING SYSTEM e Open Example Opens the selected example When the example is not downloaded yet it is downloaded and then opened e Download Downloads the selected example to local source e Revert Project File Reverts changes of the selected modified example e Delete from disk Deletes the selected downloaded example from local source Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 85 RCURY REAL TIME TRACKING SYSTEM 9 Vibrography Vibrography tool is used for analysis of data in frequency domain gt New Project L Load Project pij Save Project fa Import Data E Export Daga N V Vibrography gt Settings E4 Examples About Graph mm Graph Graph Graph mm s Graph mm s 2 Stress vs Strain Graph 3D Graph Figure 80 The Vibrography tool button The vibrography analysis can be on the following primitives and theirs measured properties e Point Probes O Positions X Y O Displacements X Y Euclidean O Widths X Y total absolute change e Line probes O Lengths X Y total o Absolute length changes X Y total O Widths X Y total absolute change Full field areas O Displacements X Y Euclidean 9 1 Vibrography tool window Frequency 3125 000 Hz Selected Seres Area 1 Displace
117. s coordinate systems and other setup is copied to the new measurement in both cases Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 15 RCURY REAL TIME TRACKING SYSTEM Type name of new measurement Reuse recorded camera images k Canes Figure 5 Add a new measurement dialog e Readjust batches Opens the dialog seen in Figure 6 Recorded image sequence of the open measurement can be additionally readjusted using a uniform distribution The batch size is defined as a number of frames and can be adjusted by the corresponding numeric box It can be useful to set the first frame of a measurement as a standalone batch Check the First Frame is a Standalone Reference option to allow this feature The uniform distribution of batches is confirmed by Perform button Readjusted batches can be reverted to their original state using Reset Batches button Uniform batches Batch size frames 10 First Frame is a Standalone Reference Reset Batches Figure 6 Readjust Batches dialog 2 5 Project Controls The panel of project controls seen in Figure 7 provides the most necessary controls of data acquisition performing computations with these data and browsing recorded data skio Reerence Q gt lt gt m vi IT SE Su aooe Set A Ed Figure 7 Panel of project controls with already recorded and
118. s acquired by a live camera and adjustment of its parameters setup of tracking primitives and used coordinate system as well as calibration of camera distortions Similarly to main window this window consists of several distinct parts as displayed in Figure 17 1 Coordinate System ag Calibration to Probes and Markers Camera Point Probe Aigid Plane Probe 4 Line Probe ne Chain Probe Area P Include Exclude Pe PIV Field 1000 000 Force Gauge JS Strain Gauge EA Neck Gauge Pair Probes Q Detect Markers Detection Settings X Clear All 0 9 Areas Correlation 9999 Area Grid spacing px 20 Vector Multiplier 1 00 9999 5 Template Size px In Time 69 Width 41 1 E a l na rad 3 a K Correlation Speed In Time Normal searches who Width Normal searches who A E Transformation Type In Time Omnidirectional translai Width Vertical translation Figure 17 Camera window 3 1 Camera Controls The panel of camera controls provides means of adjustment of camera parameters and is only enabled if a live camera is present and no test is running at the moment The individual controls located in this panel are available only if the connected camera supports their associated features and some of them may be available only if the associated camera is currently stopped They are explained as following e Run Stop Camera Runs stops all live cameras assoc
119. s from a MercuryRT project file which was used upon the acquisition of the specified images Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 45 RCURY REAL TIME TRACKING SYSTEM 4 2 Video Files The import of video files is analogous to the import of image files and handles most common video formats Upon confirmation the selected video file is converted into a series of images which are saved into the data subdirectory of the newly created project 4 3 Images from MercuryRT Project directory structure As a simplified and more straightforward method of importing image files from MercuryRT 2 project they can be specified by a path to the project file they belong to and will be imported using the directory structure of this project Importing image files this way uses paths to the images as if they were imported individually and will result in multiple sets of images if the specified project contained recorded images from more than a single camera Optionally the source project file may be used as a source of timestamp data as well by selecting the corresponding option 4 4 Externally Measured Data Data measured from outside MercuryRT may as well be imported through the data import wizard and attached to an already existing and opened project as seen in Figure 44 The other prerequisites however are that the inp
120. s the base 10 logarithm of a specified number Returns the larger of two double precision floating point numbers Returns the smaller of two double precision floating point numbers Returns a specified number raised to the specified power Rounds a double precision floating point value to the nearest integral value Returns a value indicating the sign of a double precision floating point number Returns the sine of the specified angle in radians Returns the hyperbolic sine of the specified angle in radians Returns the square root of a specified number Returns the tangent of the specified angle in radians Returns the hyperbolic tangent of the specified angle in radians Calculates the integral part of a specified double precision floating point number Table 7 Lists all operations available for the Double return type The Double type represents a double precision floating point number 11 3 4 5 Constants Constants Description Representing Double T EE sss Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 104 RCURY REAL TIME TRACKING SYSTEM Math E Represents the natural logarithmic base specified by the constant e Math PI Represents the ratio of the circumference of a circle to its diameter specified by the constant n Table 8 Lists all constants available as the Double type 11 4 Exa
121. ses cc riiet ATE EE EEEE EAEE AAEE EAEE EEE ecu EELEE T E Eas 15 2 4 Active Measurement mareren renan e A EO A EEE E AEE 15 2 5 Pr ject ON OS ssion iinaspi inoui iiinonvi cauenaesanenanasaesancesosaestaiaeseenscaniasecoisannsueeceueseaesenssaeaueesecoaiaen 16 2 6 Graphs Panel ssssnssosssenusseserrrreessrrrrossssrrevsssrtreroessrttirossttttttssre ttrt sret dee candid dcataesa tee Se aitacenenmadaeeagieis 18 2 6 1 Graphie a E NE 19 262 Nok CR Mee 23 ARG ie 9 eee en en a ene ee E E ene eee ee ee eee 21 2 6 3 PUL I cess E sc aces vars E E E E 22 S Camera WINdOW ssnacssvcssecccscenatinseensavesnnsviavatunanesitadesusveecuasectaneeus Recviasstenseudtedaxiviatiendtasvinntersenns 24 3 1 Camer CONOS rena EEEE AE S TEE E EESTE TE EET 24 3 2 Camera View Controls sessssssesseeesssssrrrrssssrrreressrrrerossrrterosssettrosrattttosssttetossrttrresseeteeeeseetrereseeree 25 3 3 Basic Correlation Parameters carcercesacasetacecssrsaiecnnmeuensancatcaesatavecesasasiennecounssnrcetususnteveneseansetncenuees 28 3 4 Coordinate System and Calibration cccccccsssssssssseeccececceseeeaeeesseeecececeeeesseuuaassseeeeeeeeeeeessaaaagees 28 3 5 Stereo Pdiring and TANNA LGR snscds casas sannn sane E EE SEEE Sodus EEE EEE E S EEEE TEE ESES 29 3 6 Camera Calibrotio M s enne ana a E EE EE EE E Ge ga teaaenneaennees 29 3 7 Coordinate Syste MSs renren e E E EE OE E 31 3 7 1 Mono Coordinate SYSTEMI rarr E EE EE EEEE EEE A EEEE 32 3 7 2 Stereo Coordinate System cag
122. sesssaueaeees 76 7 1 4 HP Video COM port Service ated icsssaneie ireaieatacteuacuszsaterainenienaoods iasaietncetwonnnceeuonenakeaneatenanneevenen 76 7 1 5 Mercury API TCP IP COM Port SerViCE sessssssssssssssssssesersrrrerrrererererrrerrrererrrererrrerererereeee 77 7 2 Configuration of the output values esssssssssereeeressosssssssrrrerreeosssssssrrrerrreosssssssnnrreereerosssssnnneres 79 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 5 RCURY REAL TIME TRACKING SYSTEM E eo E E E 83 9 ViIDrOBra phy ssenicsnaisravsuacsinavscaredexevenscassvacenadelcapeaacanaseidanenanonedscansnaseuagenoreeaneitayeeess tone uenuneuseononacsvaneneres 86 9 1 Vibrography tool windOW neneesesssssssssrererereossssssssrrrrerreessssssssrererrreosssssssnrrererrerssssssssrereererene 86 SEL Ama E r EAEE 87 2 ee PONET E eT eee een mn ne eee ee ee eee oe 87 Ma SUE VEN BIG a eauasy caayeasey cetera A ERE eu E SER T E 88 9 1 4 PEEVICW DAE E E vessnonnsantmuberssuntriaumimetcantusbhiaunuviuanaeenManiuestumaesianeamawiinansatil 88 el OEE ICOMIEL ONS ona E anne nennenr aa EAE AE OE 88 10 HW Synchronization oxsianscssewscsinedsaajenacenass canienansvedeicenewasemansnexewaredansnasycansnossiesiecansuaneuananerewarenareeeseeres 89 10 1 PEFOCU CUO IT ic e E 89 10 2 OVE NIE W seicsxeriewtovenvencosaaiewboren ceiwavaaiewboren EA EEROR
123. sidual per pixel This is usually required when light conditions are changing during the measurement or when the Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 11 RCURY REAL TIME TRACKING SYSTEM measured surface changes drastically e f full field analysis is being done on an unconnected surface try turning off automatic filtration see 5 2 5 e f primitives have been not computed in the right camera while being added try dragging them in the right camera close to theirs correct locations Some primitives have been _ e Increase the template size This increases the chance that the computed in incorrect algorithm will be able to differentiate between the reference and the incorrect location e Adjust the correlated parameters For example when tracking an edge try correlation of a translation in the direction perpendicular to the direction of the edge because for the algorithm all positions on the edge are correct e Decrease the confidence interval or the maximum square residual per pixel This increases chance of incorrect locations being rejected e f full field analysis is being done on a connected surface try turning on automatic filtration see 5 2 5 This will filter out points with transformations that do not match transformations of the surrounding points e f more than one location seems to be co
124. t r EARE Example of fullfield analysis in 2D on rounded steel sample UNIAXIAL PLANAR PLASTIC a ension tests E Circlular speckle Figure 79 Examples Browser showing tree structure of categories and highlighted downloaded examples bold font and out of date examples red color Examples are divided into categories This division is represented by a tree structure which forms the main part of the examples browser window Particular example is a leaf of tree structure and can be L p n recognized by icons Examples may be in several different states Explanations of possible states are as following lines_2d _ this example is not downloaded yet e a fullfield_2d _ This example is already downloaded amp project Modified This example is downloaded and has been already opened and modified e project Out of date Modified This example is downloaded and has been already opened and modified but there is a newer version of the example in the library of online examples When an example is selected the Selected Example section of the window is updated with the information about the selected example Besides the example name there is a description of the example There are several options on what to do with an example Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercu
125. t Location Threshold for difference between expected location of points and their location based on neighborhood points during calculation of transformations in mm A value of 0 disables this feature e Automatic Filtration Turns on automatic filtration of transformations e Transformation Calculation Method In 3D Method used for calculation of transformations in stereo mode Can be set to one of the following options o Single Plane Computes one plane for all the points and tensor calculation is based on deformation in this plane Suitable for planar specimens o Individual Planes Computes a plane for each point according to the neighboring points and computes the tensor values in this plane Suitable for non planar specimens Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 58 RCURY REAL TIME TRACKING SYSTEM e Vector Multiplier Factor by which all vectors are multiplied during visualization This includes the vectors associated with strain gauges and surfaces as well 5 2 6 Marker Detection This section contains parameters of marker detection Type The type of detected markers Can be set to one of the following options which are also previewed in Figure 51 o _CircleMarker Detects circle markers on the surface of the specimen O QrCode Detects QR codes on the surface of the spec
126. te that not all cameras support all synchronization options 10 2 Overview Most synchronization tasks are conveniently performed from a single Synchronization panel whose location is depicted in Figure 83 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 89 RCURY REAL TIME TRACKING SYSTEM s New Project LF Load Project gh Save Project Import Data gt Export Data Jy Vibrography Settings Examples gt About Graph mm Graph Graph Graph mm s Graph imm s 2 Stress vs Strain Graph 3D Graph Camera Sync Enable Batches Averaging Ea V T1 Displacement Euclidean mm Button which opens and Phase Step deg collapses the 180 s Detectable Freq Hz Synchronization 10000 000 Panel Take every Nth Period 1 6 8 10 Camera Relative Time s RAQ Etemon y E32 Sa As sceence Sf Sennen Project loaded from d Data AutoTest 1 mpr Figure 83 Main Window showing an open Synchronization Panel The synchronization panel consists of two parts Camera Sync upper part of the panel see 10 3 and Synchronization Box lower part of the panel see 10 4 10 3 Camera Sync The camera external synchronization c
127. the maximum frame resolution Mono Stereo Switches between mono and stereo mode When stereo mode is activated the associated camera is used as the left camera of stereo pair and the right camera is chosen from available cameras with compatible resolutions In case there is more than one such camera available the right camera may be adjusted through stereo pairing and calibration panel of the camera window see 3 5 3 2 Camera View Controls The controls which affect the camera view of the associated camera window are grouped together in a vertical panel on the left of the view and are as following Unlock Reference B Unlocks the modification of probes and markers in the reference frame which is locked whenever a new test or recomputation is started Note that this operation also deletes all computed data e Show Coordinate System TE Shows or hides the coordinate system e Show Right Camera Window CA Shows or hides the window of the right camera of a stereo pair Available only in stereo mode e Fit to Window Fits the currently displayed image camera frame into the camera view Zooming in disables this feature e Zoom one to one 1 1 Sets zoom to 100 meaning that a pixel of the screen corresponds to a pixel of the image e Invert Colors shortcut 1 H Inverts colors of displayed image This feature does not affect the measured data Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales
128. tion since the tracked area on the deformed object should not leave the FOV Separate documents detailing relationships between a FOV and other components are provided on request Focus adjustment Performed manually by the camera lens An optional assistance from the program is provided by a dedicated Focus Tool see 3 2 e Exposure adjustment Performed through the camera controls panel see 3 1 by adjusting the shutter speed and sensor gain Note that an excessive usage of gain leads to an increased amount of noise in retrieved images which results in worse resolution of the computation method Consider using lower shutter time combined with an additional source of lighting In contrast to those previously mentioned the following steps are only optional e Input Output setup Any number of input and or output channels can be configured in the main window in the I O services panel see 2 3 However this setup can be changed at any time Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 8 RCURY REAL TIME TRACKING SYSTEM e Camera pairing Should the measurement require a stereo camera setup for a 3D test the corresponding cameras have to be paired first This is achieved by clicking the stereo button in the panel of camera controls see 3 1 in the camera window of the left camera When the track
129. ton View Surfaces Areas which appears on the bottom left of the window allows switching between them In case of a vibrographic analysis see 9 on a full field measurement controls of the animation of operational deflection shape appear in the top right of the panel The displacement multiplier control which is part of it adjusts the size of the visualized displacement If more than a single stereo pair is present in the measurement at a time graph displays the data associated with just one of them A control appears in the top left of the panel that allows changing of the currently associated stereo pair Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 22 RCURY REAL TIME TRACKING SYSTEM Graph mm Graph Graph H Graph mm s Graph mm 5 2 Stress vs Strain Graph 3D Graph 4p FTF Somes gt Figure 16 3D graph showing the results of a full field measurement in 3D space Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 23 RCURY REAL TIME TRACKING SYSTEM 3 Camera Window A camera window is displayed for each camera associated with a project when a new project is created or an existing one is opened Its functionality includes preview of frame
130. ts sensors are recorded and stored in the project e Recompute values Done via the Recompute button in the main window see 2 5 performs the evaluation of values using images associated with the currently open project These can be either the images saved during Run or the imported images It can also be adjusted in a way that the tracking primitives are correlated from a certain later recorded image backwards In summary a measurement can be performed in one of the following ways e Capture images from cameras Run then add primitives and evaluate the measured values as last Recompute e Add primitives and then evaluate values in real time using captured images Run e Import images and evaluate the measured values afterwards Recompute 1 5 Measurement Evaluation When the measurement is over and all desired values have been computed there are several ways to proceed with their evaluation e Viewing the computed and measured data in 2D graphs The values computed using the specified tracking primitives are displayed as data series in the graphs panel of the main window see 2 6 If a testing machine was present during the measurement the values measured by it sensors can be displayed on the X axis of a graph by selecting the corresponding option from its context menu This context menu also allows saving the displayed data as an image to clipboard to assist with producing reports about the measurement Sobriety s r o
131. ure 20 Grid Tool functionality Copy Camera View to Clipboard shortcut Ctrl C EL Copies currently displayed contents of the camera view to clipboard This includes the visible part of the displayed image as well as all other displayed components e Save Video Sequence ae Saves the recorded sequence of images into an avi file Only the visible part of camera view is taken into account and frame rate of resulting video corresponds to the value set as FPS of the recorded data player in system settings see 5 1 7 Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 27 RCURY REAL TIME TRACKING SYSTEM 3 3 Basic Correlation Parameters The panel of basic correlation parameters allows modification of the most used correlation parameters All correlation parameters can be modified in settings window under project settings see 5 2 2 It is divided into several sections e Incremental Correlation Allows modification of the frame interval of incremental correlation e Areas Measurement Allows modification of parameters of full field measurement such as Grid Spacing and Vector Multiplier see 5 2 5 e Template Size Allows modification of template size e Correlation Speed Allows modification of correlation speed e Transformation Type Allows modification the type of correlated transformation
132. urement Project Controls Figure 2 Main window 2 1 Menu Bar The main menu bar is located at the top of the main window and contains the following items e New Project Creates a new test project If more than one camera is connected or a testing machine is present the Device Selection dialog seen in Figure 3 appears There is possible to choose either from Image Devices or Testing Machine Controller External Data Recorder The selection of cameras within this dialog denotes which are to be used in the new project and is confirmed with the Proceed button Input Sampling Rate determines sampling frequency of Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 13 RCURY REAL TIME TRACKING SYSTEM data recording of testing machine when Testing Machine Controller External Data Recorder option is chosen Imaging Devices v DELL S2340T Webcam 0 v Trust Webcam 1 Input Sampling Rate Hz Figure 3 Device Selection dialog e Load Project Loads a previously configured or recorded test project from the specified directory Save Project Saves the currently opened project This is also done automatically at several critical points such as starting and stopping of a test e Import Data Opens the data import wizard which creates a new project from specified video fi
133. ut data is stored in a CSV file and aligned into one of its columns and the opened project already contains some of its own data measured with some of the tracking primitives see 3 8 Import Externally Measured Data Measured Data CSV File CSV File Settings Measured Values Column 0 N 0 Select Measured Type Force N Delimiter Import Cancel Figure 44 Externally Measured Data page of Data Import wizard Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 46 RCURY REAL TIME TRACKING SYSTEM The input CSV file in which the externally measured data are stored is set through the field labeled Measured Data CSV File As a reminder the currently opened project is always used as the target one Next the number of the column with O being the first one in which the measured values are contained is specified in the corresponding numeric box and the type of these values is selected right next to it from several of those which are worked with in MercuryRT and may either be displayed on the X axis of graphs see 2 6 1 or used as a component in custom expressions see 11 Another note is that the delimiter used in input CSV file is set to a semi colon and may not be modified Upon confirming the selection a Measured Data Import Tool window described in section 4 4 1 is opened 4 4 1 Measured Data I
134. xample state Available examples can be found in the examples browser shown in Figure 79 Both remote and local sources of examples can be specified e Remote Source Specifies URL address of available examples Our online examples library is located at http www mercuryprogram eu download examples e Local Source Specifies local folder where the examples are downloaded Default location of downloaded examples is in My Documents MercuryRT examples It is possible to choose a custom folder directly from Examples Browser by pressing button When changing remote and local source it is required to press Refresh button for the changes to take effect After that the modifications are saved and will be used next time the examples browser is opened The changes of remote and local source settings can be reverted using the corresponding button in the bottom left of the window There is also an option named Reset to default in the context menu of remote and local textboxes Remote and local source can be defined in system settings see 5 1 8 as well Sobriety s r o Namesti 1 Kvetna 63 Phone 420 541 231 698 sales mercuryprogram eu 664 34 Kurim Czech Republic Support 420 604 359 827 tecs mercuryprogram eu 83 RCURY REAL TIME TRACKING SYSTEM Remote Source http www mercuryprogram eu download examples A Local Source C Users Petr Documents MercuryRT examples Description Extensions Uniaxial tension tes

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