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1. Color CG 3241 180 171 160 i i Open Last 3242 182 176 167 Camera configuration 3243 175 166 161 Lose EM ne Camera config Save ation 3244 188 175 166 is Camera config _Save calibration 3245 186 174 161 load Calibration Load calibration 3246 188 176 162 Active Notice __ Calibration _Load calibration 3247 189 178 164 Status PCIE GRABBER 20120817 CAMERA A BOARD 20120822 CAMERA C BOARD 20120822 Fig 15 Save claibration start 4 2 Load table Please press button Load Calibration and open the before saved file in the shown box Actions Save Camera Save Signal 3240 177 164 146 Color C Gra 3241 180 171 160 Open Last 3242 182 176 167 Camera configuration 3243 175 166 161 o se v gen p Cassie Sa 3244 188 175 166 is 3245 186 174 161 Calibration Load calibration 3246 188 176 162 Active Notice 3247 189 178 164 Status PCIE GRABBER 20120817 CAMERA A BOARD 20120822 CAMERA C BOARD 20120822 Fig 16 Load calibration button BAP Image Systems 14 Please note further instructions Press OK at question box Fig 17 Info Message After two seconds an information box appears First of all please put the cover on top of the objective Fig 18 Lins cover If the objective is button covered please press OK Cover the lens to get a black image press OK when done Fig 19 Direction BAP Image Systems 15 BAR Wait ca 30 seconds ti2. LC8K100CXP CXP camera Calibration Version 1 0 31 08 2012 BAR Publisher BAP Image Systems GmbH Am Weichselgarten 7 D 91058 Erlangen Germany PHONE 49 0 9131 69 15 40 FAX 49 0 9131 69 15 42 E MAIL info bapimaging com WEB http www bapimaging com Printed in Germany Specifications are subject to change Windows is a registered trademark of the Microsoft Corporation Copyright BAP Image Systems GmbH All rights reserved This user manual is intellectual property of the BAP Image Systems GmbH Unauthorized use photocopying or distribution prohibited Any repetition of the content of this handbook completely or partially is prohibited without written authorization granted by the BAP Image Systems GmbH Edition August 2012 BAP Image Systems BAR History Version BAP Image Systems Table of contents POS ae de da ee 2 E 02 120 3 00 ee O E E hessen 2 2 1 MIN GO 3 2 2 SO EE 1254299 ese eee een eee ee Aen 5 2 3 made ADON e E E EE EE 6 2 4 Configuration Window 6 Os ealbralolt BIO SGN 7 3 1 Pre calibration settings 8 3 2 AC OION E S 9 3 3 ADC offset calibration 4 9 3 4 ADC inversed gain calibration 10 3 9 Pixel offset calibration 4 11 3 6 DE OG ANCA IANO NER T UT MTM 12 4 Loading of the calibration tables 14 4 1 SAV E PRE 14 4 2 D 14 BAP Image Systems BAR 1 Preface The main pu
3. camera signal very helpful while setting optic There is a Start buttonfor starting the signal preview A sample signal preview can look like this EG 6495 r Save Camera Signal Start Save Signal Open Last IMG Save CXP channels 7 ER i ave calibration r Mci WM cH2 is Active Notice Calibration Load calibration Status PCIE GRABBER 20120817 CAMERA A BOARD 20120822 CAMERA C BOARD 20120822 r Actions Color C Gray Mode r Camera configuration Fig 3 Main window while signal preview After successful start the status control should contain versions of the system components PCI Express Grabber Camera board A Camera board C BAP Image Systems BAR 2 3 Image Grabbing The Save Signal button performs a single image grab procedure ready image is saved in the application directory The image file name includes a counter that is reset at application start Image type in case of color mode is BMP in case of grayscale PGM The image can be grabbed while signal preview is started or stopped 2 4 Configuration Window The configuration window is invoked using the Camera config button Configuration window contains controls to set e ADC inverse gain slider is used to set ADC gain in the dragster sensor this value is common for the whole sensor line x4 gain checkbox e
4. es commands If one of the steps does not end with expected result the final result won t be correct In this case the procedure needs to be repeated BAP Image Systems BAR 3 1 Pre calibration settings Before starting the calibration procedure it is important to set the target ntegration Time for the target light condition and target motion speed The typical way of preparing camera for the calibration is following e Turn the vision system on and let the camera sensor and light system achieve its stable work temperature It s advised to keep the camera running for at least one minute before regular image capture and at least 5 minutes before camera calibration e Measure target system motion speed in inches per second v e Measure optical system resolution in dots per inch n e Calculate Line Period parameter LP for the camera clock frequency f 80 MHz using following formula LP I vxr m For example v2 4 i e 157 5 and r 300 DPI S S p 80000000 z 1693 clock ticks 157 5x 300 e Set the Camera Config dialog slider to the measured Line Period parameter This will assure proper image diameters aspect correct geometry e In most cases Integration Time slider has to be set to the exactly same value as the Line Period slider Such settings allow to achieve the brightest possible image for the given line capture frequency target motion speed and light conditions e f setting t
5. he Integration Time slider to a value identical as the Line Period slider causes the video signal preview saturation it may be necessary to limit the Integration Time to a lower empirical value e Please note that setting Integration Time to a value higher than Line Period is inadvisable and will cause the second parameter to extend automatically in the camera BAP Image Systems BAR 3 2 Start calibration Calibration procedure is invoked using the Calibration button The calibration can be started also while signal preview After pressing the Calibration button a question message box should appear Question _ 7 Fig 5 Calibration start question Then camera sensor is configured with default pre calibration settings ADC gain and offset Then the signal preview starts and a message box appears with the command what to do next 3 3 ADC offset calibration The first step of the calibration procedure is adjusting the ADC offset parameter for both lines of the dragster dual line sensor The signal graph before the ADC offset calibration is a particular sensor response for the common pre calibration settings the signal level is not always the same Figure 6 shows a sample signal preview before calibration Fig 6 Sample signal graph before calibration BAP Image Systems BAR After confirming that the camera is targeted to black reference or the lens is covered Figure 7 UMEN x Cove
6. ll the table is loaded A little box appears with information Ready Confirm with OK Fig 20 End of loading In the next step the cover can be removed and the image capturing can be started Fig 21 Lins uncover If the procedure is faulty completed it can be redone a second time without any problems Please note that in cold state the sensor takes dark images BAP Image Systems 16 Contacting BAP Europe BAP Image Systems GmbH Am Weichselgarten 7 91058 Erlangen Germany Tel 449 0 9131 691 540 Fax 449 0 9131 691 542 USA BAP Image Systems LLC TECH Fort Worth 1120 South Freeway Ste 214 Fort Worth TX 76104 USA Tel 1 0 817 878 2773 Fax 1 0 817 878 2739 E mail info bapimaging com Web www bapimaging com BAP Image Systems GmbH 17
7. n ss OK when done pre Fig 11 Sample signal before pixel offset calibration BAP Image Systems 11 After This step the signal needs to look like this CEE x Uncover the lens to get a white image again press OK when done Fig 12 Sample signal after pixel offset calibration 3 6 Pixel gain calibration At the end comes the most important step Pixel gain calibration It allows to get a flat white camera signal from the camera To perform this step a moving white reference is needed the previous white reference in the 3 4 could be a static reference Before this step starts the signal graph can look like this CO RER Xl Uncover the lens to get a white image again press OK when done Fig 13 Sample signal before pixel gain calibration After this step the camera signal needs to look like this BAP Image Systems 12 0 6495 Fig 14 Sample signal after pixel gain calibration BAP Image Systems 13 BAR 4 Loading of the calibration tables After the calibration the table has to be saved on the host For every program or hardware startup currently solution requires reloading of calibration tables 4 1 Save table Please press button Save Calibration and enter the file name in the shown box and save it Basically these files are saved in the program root directory Actions Save Camera Signal _ Save Signal 3240 177 164 14 r
8. nable disable the analog x4 gain in the dragster sensor ADC offset slider set the ADC offset parameter in the dragster sensor this value is common for the whole sensor line Integration Time slider can be used to set the camera integration time parameter this value is defined in 80 MHz clock ticks For example if the requested line exposure time is 1 45000s The slider has to be shifted to position indicating 1778 ticks while 80 000 000 Hz x 1 45000s 1778 Line Period slider allows to set the camera line period parameter the line period defines the time between collecting 2 consecutive lines from the sensor this value is defined in 80 MHz clock ticks For example if the requested line synchronization frequency is 50 kHz the slider has to be shifted to position indicating 1600 ticks while 80 000 000 Hz 50 000 Hz 1600 Sensor line select checkboxes are used to select which line of the dual line drag ster sensor is affected with the ADC gain offset and x4 analog gain Pixel gain checkbox enable disable the camera pixel gain see below picture BAP Image Systems ADC inverse gain nn 2 Other Iv x4 gain ADC offset J M FT Integration Time Fae Line Period 43039 Sensor line select Line 1 Line 2 Fig 4 Camera config window 3 Calibration procedure The calibration procedure is semi automatic the user needs to react on the messagebox
9. pen Last IMG CXP channels iv cH1 Wc2 Active Notice Color C Gray Camera configuration Camera config Save calibration Calibration Load calibration Fig 1 Main application window In case of no BAP Pci Express grabber or in case of missing drivers an error message should appear x X No BAPis PciExpress hardware detected Fig 2 Hardware detection fail BAP Image Systems There are several helpful controls in the application main window e Start button starts the signal preview Stop button stops the signal preview Save button saves the signal graph into csv file Load button loads the signal graph from csv file Save Signal button saves an image from current signal Open Last IMG button opens the last image saved with Save Signal button e CXP channels checkboxes used for selecting active cxp channels for signal preview and signal save e Modes select Color Gray used to turn on off the 2 lines GR GB color recombination e Camera config button shows the camera configuration window e Calibration button starts the full calibration procedure e Save calibration button allows to save the current camera calibration and settings into file e Load calibration button allows loading camera calibration and settings from previously saved file BAP Image Systems BAR 2 2 Signal Preview The main purpose for the signal check application is to preview the
10. r Ehe lens to get a black image press OK when done Fig 7 Black target confirmation The ADC offset adjusting procedure starts And should end with a message box leading the calibration procedure to next step 3 4 After this step the signal should become thin and should look like this Fig 8 Sample signal after black offset calibration 3 4 ADC inversed gain calibration Next step of the calibration procedure is adjusting the ADC inversed gain parameter for both lines of the dragster dual line sensor While this step is performed after confirming that the camera is targeted to a white reference message box 8 9 the ADC gain parameter is adjusted to get a high enough white signal level The signal level before this step starts can look like this CON Xl Uncover the lens to get a white image when done h press OK Fig 9 Sample signal before ADC gain calibration BAP Image Systems 10 BAR After the internal adjusting procedure ends a message box should appear with an order to close the lens or targeting the camera to black reference The signal after this step can look like this Fig 10 Sample signal after ADC gain calibration 3 5 Pixel offset calibration The third calibration step is setting the SRAM offset in the dragster sensor While this step a black reference or covered lens is needed The signal graph before this step should look like this Cover the lens to get a black image agai
11. rpose of the calibration procedure is to create a configuration set for the BAPis dragster camera This configuration can be stored in a file and loaded into camera using a function from the bap grb library The calibration settings are strictly connected with the light condition All the settings allow to get a wide range signal from the camera from black to white but a reference black and white light condition needs to be met while calibration procedure Calibration procedure together with saving loading calibration saving images is available from the signal check application Signal check application is a part of the software package for the cxp grabber and camera system 2 Signal Check tool At this time the signalcheck application is the main tool for the BAP dragster camera The application allows to e live preview the camera signal e save an image to disk perform a full calibration procedure e store calibration and all settings to a file load calibration and all settings from file e store a special calibration and settings file for the bap grb library perform a simple camera configuration BAP Image Systems BAR 2 1 Main Window After starting the signal check application a hw presence check is performed If the BAP Pci Express grabber is correctly installed in the PC the main application window should appear signal check RTE Save Camera Signal pixel r c el ave Signal Mode O
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