Dalsa PC-30-02K80 User Manual
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Contents
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Piranha Color Camera User’s Manual 44DALSA 03-032-10211-01 5/9/2007Set up the camera operating environment(i.e. line rate, exposure, offset, gain, etc.)Set the calibration sample size usingthe command css. It is recommended thatyou use the default setting.Perform FPN calculationPerform PRNU calculation1. Stop all light from entering the camera. (Tip: Cover lens with a lens cap.)2. Verify that the output signal level is within range by issuing the commandor . If there are too many zeros in the output data (more than 6.25%of output data within the roi) , increase the analog offset ( ) or use theautomated algorithm . If the average of the pixels is too high for yourapplication, reduce the analog offset or gain level ( ).3. Issue the command . The camera will respond withOK> (if no error occurs).FPN calculation automatically calibrates FPN coefficients and digital offset.4. After the calibration is complete, you should save these settings to non‐volatilememory so they be reusable on reboot. To do so, issue the commands and.5. To verify output, enable the FPN coefficients using the command .You should see close to zero output.gl glasaocao 0sagwfcwusepc 1 0i1. Place a white reference in front of the camera.2. Verify that the output signal level is within range by issuing the commandor . If the signal level is too low, increase your light level, adjust the analoggain ( ) or use the automated algorithm .DALSA recommends a target value of about 80% of saturation. If you changethe gain, FPN coefficients should be recalculated.3. Issue the command . The camera will respond with OK>( if no error occurs).4. After the calculation is complete, you can save these settings to non‐volatilememory so they will be remembered after power‐down and direction change.To do so, issue the commands and5glglasag ccg i 0 iccpwpc wus.. Enable the coefficients using the command, .epc 1 1Perform PRNU calculation next to determine the multiplicationfactors required to bring each pixel to the required value (balance target) forflat, white output.Set the region of interest to include allof the image’s pixels of importance usingthe command roi x1 y1 x2 y2. You can usethe default if you want to calibrate all pixels.Digital offset and digital system gain, and background subtract andadd values should be set to zero ( , , , )ssb 0 0sdo 0 0ssg 0 0sab 0 0FPN MeasurementPerforming FPN MeasurementPurpose: Measures fixed pattern noise (FPN).Syntax: ccfNotes: • Before sending this command, use the scl command toselect the color or colors you want to adjust. This allowsyou to limit the calibration to a single color.• Perform all analog and digital adjustments beforeperforming FPN correction.• Perform FPN correction before PRNU correction.To save FPN coefficients after calibration, use the wfc command. |
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