38 • CamExpert Quick Start X64 Xcelera-CL PX4 User's Manual
Using Flat Field Correction
From the CamExpert menu bar enable Flat Field correction (Tools • Flat Field Correction • Enable).
Now when doing a live grab or snap, the incoming image is corrected by the current flat field calibration
data for each pixel.
Use the menu function Tools • Flat Field Correction • Load to load in a flat field correction image from
a previous saved calibration data. CamExpert allows saving and loading calibration data for all cameras
used with the imaging system.
Using the Bayer Filter Tool
CamExpert supports the use of Bayer Filter cameras by providing a tool to select the Bayer filter mosaic
pattern and to perform an auto white balance. Color calibration can then be manually fine tuned with
RGB gain and gamma adjustments.
The CamExpert Bayer filter tool supports using both software or hardware based decoding. With boards
that have Bayer filter decoding in hardware such as the X64 Xcelera-CL PX4 (requires loading the Bayer
Decoder firmware), CamExpert directly controls the hardware for high performance real-time
acquisitions from Bayer filter cameras. When standard acquisition boards are used, CamExpert performs
software Bayer filter decoding using the host system processor.
Bayer Filter White Balance Calibration Procedure
The following procedure uses an X64 Xcelera-CL PX4 with hardware Bayer filter support (Bayer
Decoder firmware loaded) and any supported Bayer color camera. It is assumed that CamExpert was used
to generate a camera file with correct camera timing parameters.
• On the CamExpert menu bar, click on Tools • Bayer Filter. The following menu should show
Hardware selected by default when the X64 Xcelera-CL PX4 has Bayer support.
• Select Setting to access the color calibration window (see following figure).
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