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Camera Operation
Important:
In this example, the
average
pixel value for the frame is bright gray.
Also note that sensors may show a much higher maximum or a much lower
minimum pixel value due to one or more "hot or dead pixels". The sensor
specification accounts for a small number of hot, stuck, or dead pixels (pixels
that do not react to light over the full dynamic range specified for that sensor).
Once the bright gray acquisition setup is done, note the camera position and lens iris
position so as to be able to repeat it during the calibration procedure.
Start the flat field calibration tool via the CamExpert menu bar
Pre-processing > Flat Field Correction > Calibration.
The Flat Field calibration window provides a three step process to acquire two reference
images and then save the flat field correction data for the camera used. To aid in
determining if the reference images are valid, a histogram tool is provided so that the user
can review the images used for the correction data. Note that it is important to follow the
instructions in the preceding section to prepare for the dark and light acquisition steps
required for calibration.
