Piranha Color Camera User’s Manual 47
DALSA 03-032-10211-01 5/9/2007
Notes:
• Before sending this command, use the scl command to
select the color or colors you want to adjust. This
allows you to limit the calibration to a single color.
• Perform all analog adjustments before calculating
PRNU.
• Perform FPN correction before PRNU correction.
• If FPN cannot be calibrated, use the
rpc command to
reset all coefficients to zero, and save them to memory
with the
wfc command. You can then adjust the digital
offset (
sdo command) to remove some of the FPN.
• Ensure camera is operating at its expected analog gain,
integration time, and temperature.
• To save PRNU coefficients after calibration, use the
wpc command.
Related Commands:
ccf, cpa
Setting a Pixel’s PRNU Coefficient
Purpose: Sets an individual pixel’s PRNU coefficient.
Syntax:
spc i1 i2
Syntax Elements:
i1
The pixel number from 1 to n, where n = 2048 or 4096
depending on the resolution.
i2
Coefficient value in a range from 0 to 61438 where:
Notes: Before sending this command, use the scl command to select the
color you want to adjust.
Example:
spc 1024 10000
Setting a range of Pixel PRNU Coefficients
Purpose: Sets a range of pixel PRNU coefficients.
Syntax:
spr i1 i2 i3
Syntax Elements:
i1
The first pixel number of the range.
i2
The last pixel number of the range.
i3
Coefficient value in a range from 0 to 61438 where:
Notes: Before sending this command, use the scl command to select the
color or colors you want to adjust. This allows you to limit the
calibration to a single color.
i2
4096
1 +
prnu coefficient =
i3
4096
1 +
prnu coefficient =
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