here - Metria Innovation Inc
Contents
1. Add Acquisition Reorder Acquisitions Figure 20 After the Reorder Acquisitions button is selected the acquisitions will appear in the new order 3 3 5 Acquisition triggering To capture motion data an acquisition is triggered As seen in figure 17 the last entries in the acquisition settings dialog are Trigger Type and trigger options Selecting the Trigger Type box brings up the trigger type dialog seen in figure 21 One of the trigger types The trigger types are e User Revised Aug 12 2012 Page 16 MPT Users Manual Section 3 3 5 Detailed Users Manual Acquisition Planning Short Name Acg One Description First Acquisition Number of Images Number of Images Pre Trigger Number of Targets Number of Images Max Gap Priority Number of Analog Channels Trigger Type No trigger options _ Cancel Update Figure 21 Acquisition trigger type selection dialog The user triggers the acquisition by selecting Fire in the Acquisition panel e Timer A timer starts when the user selects Fire in the Acquisition panel The acquisition 1s triggered when the timer times out e ExtInput external analog input The external input trigger source permits acquisitions to be triggered from external devices such as a light beam pressure sensor or force plate When ExtInput is selected the options dialog includes th2. External Input Extension Save config settings Import config settings Reset config settings to default Establish Lab Coordinates Clear Lab Coordinates Load Last Lab Coordinates Figure 37 Config panel a configuration that includes five fields in each data file name Revised Aug 12 2012 Page 29 MPT Users Manual Section 4 1 0 Appendices 4 Appendix 4 1 Homogeneous transform file format The homogeneous transform file format 1s illustrated in table 3 The initial eight lines are comments providing information about the acquisition Each subsequent line corresponds to one captured image and contains 1 An initial string 2 The frame time time in seconds in the current epoch of the robust computer system clock 3 N repetitions of 14 fields where N is the number of MPT markers identified in the acquired images The fields are a The MPT marker ID number b The status of measurement for this MPT marker in this image valid data O no valid data c Twelve elements of the homogeneous transform matrix expressing the pose of the MPT marker in the coordinate frame of the motion tracking camera For example for the first row of data in table 3 the homogeneous transform 1s given as 0 840866 0 392027 0 373174 0 007651 0 530461 0 733847 0 424358 0 038187 0 107493 0 554782 0 825022 1 552948 0 0 0 l The last row 0001 is omitted from the homogeneous trans
3. 20 Enterino the subject NAME 4 4 4 5 5 ra Brine en e ER rer 20 Acquisitions ready to fire once the camera is started 21 Motion capture system ready to fire acquisitions 22 Acq One Fire button has been selected once The blue circular arrows icon indicates that the acquisition images have been captured and are being processed 22 Acq One Fire button has been selected once The green check icon indicates that the acquisition images have been successfully processed 23 Revised Aug 12 2012 Page 11 30 31 32 33 34 35 36 ey Selecting Fire a second time launches a second acquisition identical to the first except with a trial number of 2 the value before incrementing rather than 1 The second icon location shows the status 23 Red X indicates that the current trial repetition number corresponds to data dready OM CIS e e sm Ra A A de Bae ds do ie 24 A red X indicates that selecting Fire will overwrite data If Fire is selected a dialog box gives the user one last chance to preserve existing data 25 Example live View window ica is ee cd ae h a EN a 25 When Continuous Processing is started detected MPT markers can be illuminated in the live view window by selecting the Circles control 26 When Continuous Processing is started detected MPT markers can be illumin
4. Some characteristics of the MPT motion capture system are e Through unique use of moir patterns full 3D motion capture with a single camera e Translation and rotation of each marker is recorded from each image With moir patterns rotations are detected with an accuracy of 0 05 RMS e Automatic identification of up to 256 markers in each image e Synchronized capture of up to 16 channels of analog data e Data output in ASCII and c3D file formats 1 1 Basics of operation The basic elements of the Metria Motion Capture System are seen in figure 3 going from the motion of the MPT marker on the left to recorded data files on the right field of results motion view wifi storage A D cables SA gt MPT lt Markers CLU Robust Computer Measurement Data Files ASCII or c3d User Laptop on user laptop Figure 3 Basic elements of the Metria Motion Capture System The basic elements are e MPT markers MPT markers present in the field of view are tracked by the system e Camera lighting unit The camera lighting unit CLU illuminates and captures images of the measurement volume The images are passed continuously over camera power and data cables to the robust computer e Robust computer The Robust Computer RC is purpose built to capture images of MPT markers and produce motion data The RC receives commands from the user laptop to configure motion capture acquisitions fire execute the acquisition an
5. 011 By OZ 0 79 T 0710 B 08822352 eat 202 a yd a de 79 Verbose Circles r Target Info r Equalizer Figure 35 When Continuous Processing 1s started detected MPT markers can be illuminated in the live view window by selecting the Circles control 3 5 The status panel indicates engineering data 3 6 Status panel Config panel 3 6 1 Path generation for storing data files When motion data is captured it is written to disk using automatically generated file names The Metria motion capture system provides a flexible means to configure generation of the data file names The ASCII format data files are e A file of captured data see section 4 1 e An external analog input data file see section 4 2 These files are stored with a path and file name that can include up to 6 fields l Subject Name 2 Acquisition Plan Name 3 Plan Repetition Number 4 5 6 Acquisition Short Name Acquisition Repetition Number A file extension Revised Aug 12 2012 Page 27 MPT Users Manual Section 3 6 1 Detailed Users Manual Control of these options is set by the radio buttons seen in figures 36 and 37 The first five fields may be used in one of three possible ways selected by the corresponding radio button on the Config panel e Start Name If this radio button is selected the corresponding element starts a new name in the path to the data For example the configuratio
6. 2 Quick start guide 2 1 Equipment setup A summary list of equipment setup steps 1s given here Complete detail with illustrations 1s provided in section 3 1 i 2 2 2 Connect the power cable to the robust computer Setup the camera lighting unit CLU on a tripod or other fixed mount tripod not provided Connect camera link and power cables between the CLU and the robust computer Turn on the robust computer Configure MPT markers in the CLU field of view to track motion Boot the user laptop Software startup On the user laptop connect to the Metria Innovation access point l 2 3 Launch program MoCapUI On the Planning panel load an acquisition plan or create a new acquisition plan Fire acquisitions Revised Aug 12 2012 Page 4 MPT Users Manual Section 3 1 1 Detailed Users Manual 3 Detailed Users Manual 3 1 Equipment setup Step by step details of equipment setup are presented in this section 3 1 1 Setup Camera Lighting Unit and attach cables The camera lighting unit should be mounted to a solid tripod or other fixed mount as seen in figure 4 PA fo L Figure 4 Mounting the camera lighting unit to a suitable tripod As seen in figure 5 three cables are attached to the camera lighting unit They are the power cable 2 the first camera link cable camera link Base and 3 the second camera link cable camera link Full Revised Aug 12 2012 Page
7. I NE RME Mate 17 SA ACQUISITION Panels onc ea SAR SAME ewe MARS ed e ee 19 3 4 1 Basic configuration of the acquisition panel 19 3 4 2 Five controls at the bottom of the acquisition panel 21 3 4 3 Firing acquisitions Le 4 he a a dd 22 3 4 4 The live view window 25 39 Status Panel sra we be wo See ir Bean eink ewe Neo ee IH 24 20 Conteo Panels i e as Sees wh Oh es dh we ob Reese Re See 27 3 6 1 Path generation for storing data files 21 4 Appendix 30 4 1 Homogeneous transform file format 30 4 2 External input file format 22 4 3 Analog sampling specification 32 Revised Aug 12 2012 Page i List of Figures D I ON nN A D ra pd Ra pa ES N 15 16 17 18 19 20 21 22 25 24 25 26 21 28 29 Images of a 65mm MPT marker and Camera Lighting Unit CLU l Images of an MPT Robust Computer and user laptop running MoCapUI l Basic elements of the Metria Motion Capture System 2 Mounting the camera lighting unit to a suitable tripod 5 Back of camera lighting unit with three cable connections 6 Attaching the CLU power cable 6 Camera lighting unit with all cables attached 7 Making the power connection to the robust com
8. essionName Plan Rep 17 Name Rep Exist Ovr Action Acq One Acq Two 1 WI Auto increment Acq Reconnect Start Live View Stop Camera Start CP Figure 30 Selecting Fire a second time launches a second acquisition identical to the first except with a trial number of 2 the value before incrementing rather than 1 The second icon location shows the status The motion capture system supports repeated trials in a flexible way Some characteristics of the acquisition repetition number trial number are Revised Aug 12 2012 Page 23 MPT Users Manual Section 3 4 3 Detailed Users Manual e In normal operation the Rep value indicates the next acquisition repetition number that will be assigned to an acquisition when it is fired e The acquisition repetition number can be incremented or decremented with the adjacent control e A green check next to the acquisition repetition number indicates that firing the acquisition will not overwrite data e If there is a bad trial data can be overwritten by decrementing the acquisition repetition number e If the acquisition repetition number corresponds to existing data a red X will show as seen in figure 31 If Fire is selected a dialog box gives the user one last chance to preserve existing data as seen in figure 32 FE MoCapUI Client ver Nami Planning Acquisit
9. is selected and the first icon has been filled in indicating the status of the acquisition Acq One Acq Two 1f Auto increment Acq Reconnect Start Live View StopCamera Start CP Figure 28 Acq One Fire button has been selected once The blue circular arrows icon indicates that the acquisition images have been captured and are being processed Revised Aug 12 2012 Page 22 MPT Users Manual Section 3 4 3 Detailed Users Manual In figure 29 the status icon indicates that the acquisition has been successfully processed Selecting the fire button a second time as seen in figure 30 launches a new acquisition r L amp j MoCapUI Client ver Name Build 459 RCVer Test 2Janua Acquisitions Processing 0 Connected Planning Acquisition Status Config Results Dir CAUsersluseriDesktopi2012January15 E subject Subjectot Plan ession Name Plan Rep 17 Name Rep ExistOvr Action m Acq One WW Acq Two ir y Auto increment Acq Reconnect Start Live View Stop Camera Start CP Figure 29 Acq One Fire button has been selected once The green check icon indicates that the acquisition images have been successfully processed P Results Dir C Users useriDesktop 2012January15 E subject Subjectot Plan
10. the external input file format is illustrated in table 4 There are no comments at the top Each line contains the time stamp and N columns of data where N is the number of external input channels selected for the acquisition see section 3 2 1 00083742 697129420 2300000 2 418708 Ze AS TIA 2 BOG ke by A 99102 2 518807 00083742 701129780 LINO ape ope sy Meee 2 408637 2 438849 2 463874 2 488899 00083742 705130141 Ze 320019 2239310 ARPA 2408154 22420179 2 458686 00083742 709130502 24295009 2316914 2 348821 2 313846 23980014 2 423896 0003837427 713 1030 363 24200010 2200 lly Lot Loy 2599041007 23000907 24999600 VOUSS 142 11 71131224 LELADOOS y 2329581997 22209010 2300068453 2399001 2990022 Uds 7142 12a 3515685 Ze lOO O12 igh ae hehe 22240122 2321090907 22308095 2392009 00083742 725131946 Zell O04 Oly 25199790 2 210014 LALA 39 2 26000 Ziel DOUTE Table 4 Sample of the external analog input file format 4 3 Analog sampling specification e Analog sampling User selectable number of channels O up to 16 User selected sample rate up to 200k samples second one channel or 12k samples second sixteen channels Revised Aug 12 2012 Page 32
11. 5 MPT Users Manual Section 3 1 1 Detailed Users Manual Figure 5 Back of camera lighting unit with three cable connections Figure 6 illustrates attaching the camera lighting unit power cable 4 N Figure 6 Attaching the CLU power cable Attach the two camera link cables Between the camera lighting unit and the robust computer camera link base should be connected to base and full to full The camera link thumb screw fasteners should be snugly finger tight do not over tighten with a screw driver Revised Aug 12 2012 Page 6 MPT Users Manual Section 3 1 1 Detailed Users Manual Figure 7 Camera lighting unit with all cables attached Revised Aug 12 2012 Page 7 MPT Users Manual Section 3 1 2 Detailed Users Manual 3 1 2 Attach cables to the robust computer Four cables are attached to the robust computer They are the power cable for the CLU 2 the first camera link cable camera link Base 3 the second camera link cable camera link Full and 4 the external input connection The CLU power connection to the robust computer is seen in figure 8 Figure 8 Making the power connection to the robust computer Connecting the two camera link cables to the robust computer is illustrated in figures 9 and 10 The camera link cable fasteners should be tightened snugly finger tight Figure 9 Connecting the first camera link cable to the robust computer Revised Aug 12 2012 Page 8 M
12. 5 Entering the subject name With the Acquisition panel as seen in figure 26 acquisitions will be ready to fire once the camera 1s started Revised Aug 12 2012 Page 20 MPT Users Manual Section 3 4 3 Detailed Users Manual E I MoCapUl Client ver Name Build 459 RC Ver Test 2January20 Laa pu eee La Acquisitions Processing 0 Connected lanning Acquisition Status Config Results Dir C Users user Desktop 2012Januan y15 la Subject Subject01 Plan ession Name Plan Rep 1H econnec Figure 26 Acquisitions ready to fire once the camera is started 3 4 2 Five controls at the bottom of the acquisition panel Next attention is given to the five controls at the bottom of the Acquisition panel for example seen at the bottom of figure 26 These are l 2 A check box to activate auto increment for the acquisition repetition number Reconnect This control will re initialize and reconnect the WiFi link between the robust computer and the user interface computer see figure 3 Start Stop Live View When the camera is started this control opens a live view window which shows the current image seen by the camera When live view is stopped the control shows start and vice versa Start Stop camera This control is used to start and stop the camera In figure 26 the acquisition fire buttons and the start live view button are grayed out because the camera
13. Motion Capture System User Manual Model MC 40180 Metria Innovation Inc Moir Phase Tracking Technology Motion Capture System User Manual Model MC 40180 August 6 2013 Copyright c 2012 Metria Innovation Inc All rights reserved Moir Phase Tracking and MPT are trademarks of Metria Innovation Inc Contents 1 Introduction 1 LE Basics OL OPCLAUON 4 ik ye tea See Ske Shwe A ada A 2 k ACAISIHONS lt uses Se dre a Wm de d da de da A ea AE eS RG A 3 1 3 Propralm Mo apUL p dri das M he bbw dhe bw ee we hod wh ded 3 2 Quick start guide 4 Sch EQUIPMENESCION vs dd dei dub AS St 4 22 gt SOWA SIUD 4 aes E et de a de a er ee toi 4 3 Detailed Users Manual 5 AE EQUIPREnesctup y irector Ge ee hed a aea 5 3 1 1 Setup Camera Lighting Unit and attach cables 5 3 1 2 Attach cables to the robust computer 8 3 1 3 Example use of the external analog input a force plate 10 3 2 MoCapUI the user interface to the Metria motion capture system 12 3 2 1 Anatomy of a motion capture acquisition 13 Js Planine Panels gt iu LUS LT AIN SI dad o G 14 Souk NEW ES 26s SSSR ias e Bene Brine Due dures 14 2 Loud PME ic ek ar Ai Le Ste Sy Se ea A 15 3 3 3 Save Plan and Save As Plan 15 XIA Reorder Plan A oy ne de De See de di a ed ne 15 3 3 9 Acq isition triggering ss past les Der Lens a ts 16 o A a Assis NS LEARN
14. PT Users Manual Section 3 1 2 Detailed Users Manual Figure 10 Connecting the second camera link cable to the robust computer Connection of the external analog input signals is seen in figure 11 Fasteners should be snugly finger tight Figure 11 The external analog input signals are connected by a 50 pin ribbon cable Revised Aug 12 2012 Page 9 MPT Users Manual Section 3 1 3 Detailed Users Manual 3 1 3 Example use of the external analog input a force plate In figures 12 and 13 connection of the Metria motion capture system to a Bertec 4060 NC force plate is illustrated As seen in figure 13 the force plate amplifier connects onto standard BNC connections Figure 13 Bertec corp AM6 six channel amplifier In figures 14 and 15 connection of the force plate signals through a BNC connector box and 50 conductor ribbon cable is seen Revised Aug 12 2012 Page 10 MPT Users Manual Section 3 2 0 Detailed Users Manual Figure 14 BNC cables connect the force plate amplifier to the motion capture system external analog inputs through a Measurement Computing Corp BNC 16SE BNC connector box a gt e AA O e CH BOARD kee w Figure 15 A Measurement Computing Corp C100HD50 65 ribbon cable connects to connection P3 on the back of the BNC 16SE connector box The ribbon cable connects to the robust computer external analog input as seen in figure 11 Revised Aug 12 2012 Pa
15. Save As Plan opens a file name dialog for the user to set the file name of the saved plan 3 3 4 Reorder Plan The acquisitions in a plan can be reordered as illustrated in figures 19 and 20 To reorder acquisitions modify the numeral assigned to the acquisition After the Reorder Acquisitions button is selected the acquisitions will appear in the new order Revised Aug 12 2012 Page 15 MPT Users Manual Section 3 3 5 Detailed Users Manual Acquisitions Processing 0 Offline Planning Acquisition Status Config 5 Session Name A Session Name Load Plan Save Plan Save As Plan Camera Settings New Plan Vf Acq One nimages 10 nTargets 1 Trigger User Settings II Acq Two nimages 10 nTargets 1 Trigger User Settings Acq three nimages 100 nTargets 1 Trigger User Settings Add Acquisition Reorder Acquisitions Figure 19 To reorder acquisitions modify the numeral assigned to the acquisition Acquisitions Processing 0 Offline Planning Acquisition Status Config Session Name A Session Name Load Plan Save Plan Save As Plan Camera Settings New Plan 1 Acq three nimages 100 nTargets 1 Trigger User Settings 2 Acq One nimages 10 nTargets 1 Trigger User Settings Delete 3 Acq Two nimages 10 nTargets 1 Trigger User
16. ated in the live view window by selecting the Circles control 27 Config panel a configuration that includes four fields in each data file name 29 Config panel a configuration that includes five fields in each data file name 29 List of Tables E N e Attributes of a motion capture acquisition an acquisition for short 13 Example parameter settings for pre trigger store 18 Sample of the homogeneous transform file format 31 Sample of the external analog input file format 32 Revised Aug 12 2012 Page 111 MPT Users Manual Section 1 0 0 Introduction 1 Introduction Moir Phase Tracking gt or MPT is a single camera 3D motion tracking technology that operates with a passive cooperative marker An MPT motion tracking system comprises 1 One or more moir phase tracking markers figure 1 2 camera lighting unit or CLU also in figure 1 3 A robust computer computer figure 2 and 4 A user laptop computer also in figure 2 user provided Figure 2 Images of an MPT Robust Computer and user laptop running MoCapUI Revised Aug 12 2012 Page 1 MPT Users Manual Section 1 1 0 Introduction The MC 40180 motion capture system is described in this manual The MC 40180 captures images at high speed processes the images for marker measurements and records captured motion data for user analysis
17. d in table 1 These are set through the settings dialog on the Acquisition panel Status is controlled during execution of the Acquisition from the Acquisition panel Each time an acquisition is fired motion is captured and data files are produced and stored on the UI computer The file naming convention under which captured motion data are stored is controlled from the Config panel described in section 3 6 As described in section 3 4 acquisitions can be fired executed any number of times from the Acquisition panel The acquisition trial number is incremented each time and used to produce unique results file names see also section 3 6 Acquisition attributes Significance Value range Short Name Short string name of the acquisition Walk01 Appears in data file name Description Longer string description of the acquisition any string optional Number of Images Number of images in the acquisition 1 1000 determines the duration of the acquisition Number of Images Pre trigger Used with pre trigger store described further in section 3 3 5 1 Number of Targets Anticipated number of MPT tracking markers in the images of the acquisition Can accelerate processing or set to 0 if unknown Number of Images Max Gap Parameter that controls searching for markers in images Priority of the acquisition for processing high low Number of Analog Channels Number of external analog input channels to 0 16 record in the ExternalInput csv fil
18. d transfer the results to the user laptop Revised Aug 12 2012 Page 2 MPT Users Manual Section 1 3 0 Introduction 1 2 The RC has two states on and off When on the RC motion capture software runs and is ready to receive commands from the user laptop The RC provides a WiFi access point and will accept a WiFi connection from the user laptop computer User laptop computer Program MoCapUI runs on the user provided laptop computer and provides the user interface to the Metria motion capture system Through MoCapUI the user can access and use all features of the motion capture system MoCapUI is introduced in section 1 3 and described fully in section 3 2 Measurement data files When acquisitions are run motion data is acquired and saved in measurement data files Both ASCII data files and c3d files are available Acquisitions Operation of the Metria MC 40180 motion capture system is built around the concept of a motion capture acquisition Motion capture acquisitions are pre planned with values set for characteristics such as number of images in the acquisition and trigger type Acquisitions are fired executed through program MoCapUI and produce data files in a specified file location on the user laptop disk 1 3 Program MoCapUI Program MoCapUl is a java program that runs on the user laptop or other computer Revised Aug 12 2012 Page 3 MPT Users Manual Section 2 2 0 Quick Start Guide
19. e Trigger Type Type of triggering to initiate the acquisition User Timer External Input Table 1 Attributes of a motion capture acquisition an acquisition for short Revised Aug 12 2012 Page 13 MPT Users Manual Section 3 3 1 Detailed Users Manual 3 3 Planning panel In the motion capture system an acquisition is the most basic element of motion capture Data are recorded by firing acquisitions As described in section 3 2 1 acquisitions are organized into acquisition plans Program MoCapUI interacts with one acquisition plan at a time e In the Planning panel acquisition plans are loaded edited and saved e In the Acquisition panel acquisitions from the currently loaded acquisition plan are executed As seen in figure 16 acquisition plans can be loaded saved under their current name and saved as a new name To get started working with an acquisition plan select either Load Plan or New Plan 3 3 1 New Plan e Set the Plan Name Session Name to the desired plan name The plan name can appear as part of the path generated to store data files White space is allowed but may not be desired see section 3 6 1 e Select Add Acquisition to add the first acquisition to the plan Selecting Add Acquisition will open the acquisition settings dialog seen in figure 17 Starting with the acquisition short name the settings of the acquisition can be made Acquisition Plannin
20. e values seen in figure 22 These options allow a trigger to be setup based on an external analog input signals connected as shown in figure 14 The channel can be set to one of O 16 The threshold is set in volts and the trigger edge can be set to Rising or Falling 3 3 5 1 Pre trigger store Pre trigger store in the Metria motion capture system functions as does the pre store function that is common in oscilloscopes Pre trigger store makes possible motion capture of events prior to the triggering event As seen in figure 17 and table 1 Number of Images Pre Trigger is a parameter of each acquisition When this value 1s set greater than zero the trigger is not armed until the pre trigger store buffer is full Once the buffer 1s full images are continuously replaced so that at the instant of the trigger the images corresponding to the number of images pre trigger immediately prior to the trigger event are available for analysis Revised Aug 12 2012 Page 17 MPT Users Manual Section 3 3 5 Detailed Users Manual Acquisition Planning Acg One First Acquisition Number of Images Number of Images Pre Trigger Number of Targets Number of Images Max Gap Priority Number of Analog Channels Trigger Type TriggerChannel TriggerThreshold TriggerEdge Figure 22 Triggering options under the ExtInput selection When the acquisition is triggered motion captured from the pre
21. forms file Revised Aug 12 2012 Page 30 Section 4 1 0 Appendices MPT Users Manual JEULIOJ oy ULIOJSUR snoouogowoy ay JO atdumge 21061 9662655 1000 LL6PZ8 000 8G8PSG 0000 LYPLOT 000 88T8E0 0000 OSYrcr 0000 rOBSEEL 0000 LHPOEG 0000 0S9L00 0000 B89TEL 0000 TO0Z6E 0000 I88078 000 IT OTO FBTOECTLEL ZYLE8O00 AWA BZOEETLEL ZVLESOOO 19PBTLISOS TO00 PEUI 896256 T1000 2Z206Z8 000 Z8L7SS 0000 E6PLOT 000 L8T8 0 0000 8SEPCF 0000 LP8 EL 0000 T9POES 0000 y LH e e 18 AZ LH 1 LH Ip 7 1H E LA Z 7 LH 1 7Z LH TS9L00 0000 PLTELE 0000 LZOZ6E 0000 998078 000 IT OTO 027671169 ZrLE8000 AWA OZPETTLE9 TYLE8SO00 ASPBTILIA 00008PEuI y T IH EC ATRL ATILE ACT TITLE enge qiqebrey out Suez quenobeuy Z000 poznseensiepzeru 9 Sornyuopunogs1ebreru 9 sdweqayetnyu Pp SOUO0IPOSTINAU OT sobeuru oT deosyozessehewurxemu 7 poy3emuotieuture3eq1eb1eIL 7000 I siequnngari3eba1e1 uotieznbtuon bursse901q TTOZ 1dY 60 ap UOTIEIQIIED UUgZIePreuuos SUOT I0O 06LIODPOTTISOZIY TePON ejeq ezeweD 2120000 UOTITSTNDOY SUOTITSTNDOY ETI30N 109091T bewr ZIOZ 12 66 81 CT Tne TI uo paessadold squeueznsee ao Ae ae AP AN QS Ae ae Revised Aug 12 2012 Page 31 MPT Users Manual Section 4 3 0 Appendices 4 2 External input file format An example of
22. g Short Name Acq Description This is the default info Number of Images Number of Images Pre Trigger Number of Targets Number of Images Max Gap Priority Number of Analog Channels Trigger Type No trigger options add Figure 17 Acquisition settings dialog The acquisition short name should be set to a name that is unique to this acquisition plan It may be used to generate the captured motion data file names see section 3 6 1 Revised Aug 12 2012 Page 14 MPT Users Manual Section 3 3 5 Detailed Users Manual e Additional acquisitions can be added to the plan by repeatedly selecting Add Acquisition e The plan can be saved by selecting Save As Plan A plan with three configured acquisitions is seen in figure 18 nimages 10 nTargets 1 Trigger User nimages 10 nTargets 1 Trigger User nimages 100 nTargets 1 Trigger User Figure 18 An acquisition plan with three configured acquisitions 3 3 2 Load Plan If acquisition plans have been previously made and saved one can be loaded by selecting Load Plan For example once the plan of figure 18 has been saved 1t can later be loaded bringing the Planning panel back to the state seen in figure 18 3 3 3 Save Plan and Save As Plan Save Plan causes a currently loaded acquisition plan to be saved using the file name and path from which 1t was loaded Alternatively
23. ge 11 MPT Users Manual Section 3 2 1 Detailed Users Manual 3 2 MoCapUI the user interface to the Metria motion capture system The user interacts with the Metria motion capture system through the program MoCapUI which runs on a user supplied computer Implemented in java MoCapUI is platform independent so many types of user supplied computer can be used such as a Microsoft Windows laptop computer The first panel of MoCapUI is seen in figure 16 Across the top are seen four tabs e Planning e Acquisition e Status e Config These four tabs take the user to four panels each of which permits control or monitoring of an aspect of motion capture Acquisitions Processing 0 Offline Planning Acquisition Status Config Session Name Default Plan Load Plan Save Plan Save As Plan Camera Settings New Plan Figure 16 Appearance of MoCapUI upon launch Before describing the four panels details of a motion capture acquisition are presented in section 3 2 1 Revised Aug 12 2012 Page 12 MPT Users Manual Section 3 3 0 Detailed Users Manual 3 2 1 Anatomy of a motion capture acquisition An acquisition is the basic element of data in the Metria motion capture system Acquisitions are organized into acquisition plans that are edited in the Planning panel Acquisitions are fired executed from the Acquisition panel The attributes of each acquisition are liste
24. ion Status Config Results Dir C Users user Desktop 2012January15 Ki Subject Subject01 Plan ession Name Plan Rep 15 Name Rep ExistOvr Action O i Acq One Acq Two 1H L Stop Camera Start CP y Auto increment Acq Reconnect Start Live View Figure 31 Red X indicates that the current trial repetition number corresponds to data already on disk Revised Aug 12 2012 Page 24 MPT Users Manual Section 3 4 4 Detailed Users Manual MoCapUI Client ver Name Build 459 RC Ver Test 2Ja EE i Acquisitions Processing 0 Connected H Planning Acquisition Status Config Results Dir C Users usenDesktop 2012January15 CH Subject Subject01 Plan ession Name Plan Rep 17 Name Rep Eist Ovr Action Acq One i 15338 air About to Overwrite gt Overwrite saved acquisition Otherwise you can increment the counter for this acquisition and try again Delete existing data and Acquire now Go Back y Auto increment Acq Reconnect Start Live View Figure 32 A red X indicates that selecting Fire will overwrite data If Fire is selected a dialog box gives the user one last chance to preserve existing data 3 4 4 The live view window Selecting Start Live View in the Acquisition panel opens the live view window as seen in figure 33 bh III Verbose Circles Target Info Eq
25. is stopped Selecting this control will start the camera and change the configuration of controls to that seen in figure 27 Start Stop CP CP stands for Continuous Processing which is continuous processing of camera images to detect and measure MPT motion tracking markers When Start CP is selected the system will illuminate detected markers in the live view window and optionally report basic data as described in section 3 4 4 When Stop CP is selected live view updates the image faster Revised Aug 12 2012 Page 21 MPT Users Manual Section 3 4 3 Detailed Users Manual 3 4 3 Firing acquisitions When Start Camera is selected the acquisitions are ready to be fired as seen in figure 27 Firing acquisitions will produce captured motion files on the user computer Acquisitions Processing 0 Connected Planning Acquisition Status I Config Results Dir CAUsersluseriDesktopi2012January15 E subject Subjectot Plan ession Name Plan Rep 17 ExistOvr Action Acq One Ss 1f Auto increment Acq Reconnect Start Live View Stop Camera Start CP Figure 27 Motion capture system ready to fire acquisitions In figure 28 the Fire button of acquisition Acq One has been selected once The repetition counter is incremented to 2 indicating that the trial number will be 2 the next time the Fire button
26. ition Short Name and Acquisition Repetition Number and file extension A subdirectory is created for each Subject Name and an example 1s seen in the Example Path box Revised Aug 12 2012 Page 28 MPT Users Manual Section 3 6 1 Detailed Users Manual T fz MoCapUI Client ver Name Acquisitions Processing 0 Connected Planning Acquisition Status Config Result File Names User Defaults Lab Coordinates Start Subdirectory Use in Filename Don t Use Subject Name el gt Acquisition Plan O O Plan Repetition m O Example Path ResultsDirJohn MEKN_5 hts Acquisition Description Acquisition Repetition Homogenous Transform Extension External Input Extension Save config settings Import config settings Reset config settings to default Establish Lab Coordinates Clear Lab Coordinates Load Last Lab Coordinates Figure 36 Config panel a configuration that includes four fields in each data file name e LG MoCapUI Client ver Name Acquisitions Processing 0 Connected Planning Acquisition Status l Config Result File Names User Defaults Lab Coordinates Start Subdirectory Use in Filename Subject Name O Acquisition Plan Plan Repetition Example Path ResultsDirJohn StancePlan_MEKN_5 hts Acquisition Description Acquisition Repetition Homogenous Transform Extension
27. n of figure 36 starts a name with the Subject Name and with the Acquisition Short Name When a name is started it will be the first field in one of two types of name 1 Data file name If the field is the last for which Start Name is selected it will be the start of the results data file name 2 Subdirectory name If the field precedes the last for which Start Name is selected it will be the start of a subdirectory name in the path to the results data file Use in File name If Use in File name is selected the field will be post pended to the preceding field as part of the generation of the path and results file name Don t Use If Don t Use 1s selected the field will not be used For example in figure 36 two fields are selected for Start Name and one field is selected for Use in File name In this case the Acquisition Short Name starts the results data file name it is the last field for which Start Name is selected and a subdirectory is created for each Subject Name Additionally the Acquisition Repetition Number is post pended to the Acquisition Short Name and the file extension is post pended An example path generated by this selection is seen in the Example Path box A second example is seen in figure 37 where the Subject Name and Acquisition Plan Name each start names In this case the data file name is started with the Acquisition Plan Name and includes the Acquis
28. puter 8 Connecting the first camera link cable to the robust computer 8 Connecting the second camera link cable to the robust computer 9 The external analog input signals are connected by a 50 pin ribbon cable 9 Bertec corp 4060 NC force plate with cable 10 Bertec corp AM6 six channel amplifier 10 BNC cables connect the force plate amplifier to the motion capture system external analog inputs through a Measurement Computing Corp BNC 16SE BNC COMMECTOLDOX armar a he OO ATR ets 11 A Measurement Computing Corp C100HD50 65 ribbon cable connects to connection P3 on the back of the BNC 16SE connector box 11 Appearance of MoCapUl upon launch 12 Acquisition settings dialog 14 An acquisition plan with three configured acquisitions 15 To reorder acquisitions modify the numeral assigned to the acquisition 16 After the Reorder Acquisitions button is selected the acquisitions will appear in ESCHER mets ROUE os A a er a le ie de cw de 16 Acquisition trigger type selection dialog 17 Triggering options under the ExtInput selection 18 Acquisition panel when first opened 19 Folder selection dialog to set the results directory
29. stored images will be included in the results For example with the settings seen in table 2 when the user selects fire for the first two seconds the pre store buffer will be filling and trigger will not be armed Then the trigger will be armed and will fire based on the trigger type When the trigger fires possibly after some delay the 200 images recorded immediately prior to the triggering event and the 300 images following the triggering event will be analyzed and motion capture data will be recorded number of images pre trigger 200 Table 2 Example parameter settings for pre trigger store Revised Aug 12 2012 Page 18 MPT Users Manual Section 3 4 1 Detailed Users Manual 3 4 Acquisition panel 3 4 1 Basic configuration of the acquisition panel When the acquisition panel is first opened it appears as seen in figure 23 Before acquisitions can be fired these values must be set e Results directory e Subject name No motion capture acquisition can be fired until the results directory and subject name are set fa l j MoCapUI Client ver Name Buil a X Planning Acquisition Status Config Es ji Auto increment Acq Reconn ect Start Live View Stop Camera Stop CP Figure 23 Acquisition panel when first opened To set the results directory select the folder icon to the right of
30. the results directory field This opens the folder selection dialog seen in figure 24 Revised Aug 12 2012 Page 19 MPT Users Manual Section 3 4 1 Detailed Users Manual ExistOvr Action NI Acq Two Select Directory Look In Documents C BackupMPT C Test02 C MATLAB c Test03 Cf MPT GUI_logs C MPT_Results CC My Music CC My Pictures CC My Videos File Name Files of Type Auto increment Acq Reconnect Start Live View Stop Camera Auto increment Acq Reconnect Start Live View Stop Camera Stop CP l wm e 7 emm a Setting the results directory b Results directory is set Figure 24 Folder selection dialog to set the results directory Next the subject identifier name or de identified string such as Subject01 is entered in the Subject field as seen in figure 25 Y M j MoCapUI Client ver f Acquisitions Processing 0 Connected Planning f Acquisition Status Results Dir C Users user Deskto la Subject Subject01 Plan ession Name Plan Rep H Rep Exist Acq One Auto increment Acq Reconnect Start Live View Stop Camera Stop CP Figure 2
31. ualizer r Figure 33 Example live view window The live view window has four controls at the bottom Revised Aug 12 2012 Page 25 MPT Users Manual Section 3 4 4 Detailed Users Manual 1 Equalizer The equalizer display seen on the left in figure 33 It graphically shows that values on channels 0 5 of the external analog input and can be used to visually verify that a force plate or other sensor 1s operating 2 Circles When Continuous Processing 1s running see section 3 4 2 detected MPT markers can be illuminated in the live view window by selecting the Circles control as seen in figure 34 3 Target Info When Continuous Processing is running see section 3 4 2 information on detected MPT markers can be written into the live view window as seen in figure 35 The marker information includes e The MPT marker ID number e The brightness of the central Starburst landmark e A value indicating the quality of focus of the marker 4 Verbose If Verbose is activated additional information is written into the live view window a Live View p e Verbose _ Circles r Target Info Equalizer Figure 34 When Continuous Processing 1s started detected MPT markers can be illuminated in the live view window by selecting the Circles control Revised Aug 12 2012 Page 26 MPT Users Manual Section 3 6 1 Detailed Users Manual T LOG B 0 D nn T
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