E2v UNIIQA User Manual - page 42
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7.9.2 Manual Flat Field Correction
The FFC Coefficients can also be processed outside of the Camera or changed manually by accessing
directly their values in the Camera : This is the “Manual” FFC.
In CommCam, the User can access to a specific interface by clicking
on “click for extended control” in both “Manual FFC calibration”
and “Manual FPN calibration sections” :
This will allow the user to upload/download out/in the Camera the
FFC coefficients in/from a binary or text file that can be processed
externally.
It is recommended to setup the baud rate at the maximum value possible (230400 for
example) otherwise the transfer can take a long time.
Set FFC Address memory access : Set the memory address for the direct access to both
PRNU/ FPN coefficients for reading or writing. After each read or write action, this address
in incremented of 128
Write function (ASCII):” w ffcga
read/write command of the PRNU/FPN Coefficients.
Start address for Offsets (FPN) : 0x12400
Start address for Gains (PRNU) : 0x13400
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FPN coefficients modification : Direct access to the FPN coefficients for reading or writing.
The FPN coefficients are read packets of x128 coefficients :
Read function (ASCII): “r ffco” : Read 128 consecutive FPN user coefficients starting
from address set by the command fcca. Returned value is in hexadecimal, without
space between values (2 Bytes per coefficient).
Write function (ASCII):” w ffco
starting address set by the command fcca.
FPN values, without space between the values (2 Bytes per coefficient).
increments automatically after each write command.