Selecting The Calibration Sample Size; Performing Fpn Calibration - Dalsa 4M30 User Manual

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3.7.3 Selecting the Calibration Sample Size

Setting the Number of Frames to Sample
Purpose:
Syntax:
Syntax Elements:
Notes:
Example:

3.7.4 Performing FPN Calibration

Calibrating All Camera Pixels
Purpose:
Syntax:
Notes:
Example:
03-032-20044-01
Sets the number of frames to sample when performing pixel
coefficient calculations. Higher values cause calibration to take
longer but provide the most accurate results.
css i
i
Number of lines to sample. Allowable values are 32, 64, 128
(factory setting), 256, 512, or 1024.
To return the current setting, use the gcp command.
css 1024
Performs FPN calibration and eliminates FPN noise by subtracting
away individual pixel dark current.
ccf
Before performing this command, stop all light from entering the
camera. (Tip: cover lens with a lens cap.)
The goal is to subtract all non-uniformities and offsets in order
to obtain a 0DN output in the dark. Analog offset should
therefore be set to 0 since it gets subtracted out during CCF.
Set the digital gain (
ssg
forced to X1
Perform FPN correction before PRNU correction.
The ccf command is not available when the camera is using the
factory calibrated coefficients (csn 0-7). You must select the
user coefficient set (csn 8-15) before you can perform FPN
calibration. An error message is returned if you attempt to
perform FPN calibration when using csn 0-7.
ccf
Falcon 4M Camera Manual
) to X1 since during calibration it gets
DALSA