Piranha ES-Sx User Manual
Teledyne DALSA
03-032-20162-00
31
Digital Signal Processing for Processing
Calibrating Camera Gain
Purpose:
The camera can determine appropriate gain values. This
command calculates the gain required to reach the output target
with a seam matching algorithm.
Syntax:
ccg i
Syntax Elements:
i
i
Calculation target value in a range from
4096
to
16064
DN
(14 bit LSB).
Notes:
This function requires constant light input while executing.
To use this command, the CCD shift direction (
) should
be set to forward (
0
) or reverse (
1
).
Perform gain algorithms before performing FPN and PRNU
calibration.
Example:
ccg 13056
Updating the Gain Reference
To update the gain reference:
Purpose:
Sets the current gain setting to be the 0dB point. This is useful
after tap gain matching to allow you to change the gain on all taps
by the same amount.
Syntax:
ugr
FPN Correction
Performing FPN Correction
Syntax:
Performs FPN correction and eliminates FPN noise by subtracting
away individual pixel dark current. For a complete description on
how to use this command, see the
Flat Field Correction Overview
on page 29.
Syntax:
ccf
Notes:
•
Before performing this command, stop all light from
entering the camera. (Tip: cover lens with a lens cap.)
•
Perform all analog and digital adjustments before
performing FPN correction.
•
Perform FPN correction before PRNU correction.
•
Available in TDI Mode only.
•
Save coefficients before changing directions, changing
operating mode, or powering off.
Related Commands:
Example:
ccf