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7.5.3
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 (115000 for
example) otherwise the transfer can take a long time.
FPN coefficients modification :
Direct access to the FPN coefficients for reading or writing
.
The FPN coefficients are read packets of x128 coefficients :
Read function : “
r ffco <addr>
” : Read 128 consecutive FPN user coefficients starting from
<addr>
address. Returned value is in hexadecimal, without space between values (one unsigned short per
coefficient).
Write function :”
w ffco <addr><val>
: Write
128
consecutive FPN user coefficients starting from
the
<addr>
address.
<val>
is the concatenation of individual FPN values, without space between
the values (one unsigned short per coefficient).
PRNU coefficients modification :
Direct access to the PRNU coefficients for reading or writing
.
The PRNU coefficients are read packets of x128 coefficients :
Read function : “
r ffcg <addr>
” : Read 128 consecutive PRNU user coefficients starting from
<addr>
address. Returned value is in hexadecimal, without space between values (one unsigned
short per coefficient).
Write function :”
w ffcg <addr><val>
: Write
128
consecutive PRNU user coefficients starting from
the
<addr>
address.
<val>
is the concatenation of individual PRNU values, without space between
the values (one unsigned short per coefficient).
