Piranha4 2K and 4K Color Camera User's Manual 89Teledyne DALSA 03-032-20180-06Calibrate PRNU flatfieldCalibrationPRNU Initiates the PRNU or Flatfieldprocess1.00BeginnerDFNCBalance White Auto BalanceWhiteAuto Initiates the process of balancingthe colors to produce a whitebalance1.00BeginnerDFNCRegion of Interest (ROI)The ROI feature is related to flat field calibration. It is important to specify an ROI when the object beingimaged has areas that have black, non-illuminated areas such as beyond the edge of a film that is frontilluminated, or is saturated, again beyond the edge of a film but in this case bright field back illuminated.The ROI feature allows from one to four specific regions of the pixel line to be specified where flat fieldcalibration will take place. Pixel data outside the ROI will not be used when performing flat fieldcalibration.Image Format Control CategoryThe Image Format controls, as shown by CamExpert, groups parameters used to configure camera pixelformat, image cropping, and test pattern.Parameters in gray are read only, either always or due to another parameter being disabled. Parametersin black are user set in CamExpert or programmable via an imaging application.Features listed in the description table but tagged as Invisible are usually for Teledyne DALSA or thirdparty software usage—not typically needed by end user applications.
