Teledyne EV71YC1MCL2010-BA0, User Manual, Page: 38 / 59

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PRNU Calibration :
o
PRNU Calibration Control ( FFCCalibrationCtrl ) : Launch or abort of the PRNU process for
the Gains calculation . This command is available in the CommCam “Flat Field Correction /
Automatic Calibration ” section :

Read function : “ r calg ” (ASCII): Returns the PRNU Calculation Process Status (0 if
finished, 1 if processing)

Write function (ASCII):

“ w calg 1 ” : Launch the PRNU Calibration Process.
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“ w calg 0 ” : Abort the PRNU Calibration Process.
o
PRNU coefficient Reset ( PRNUReset ) : Reset the PRNU (Gains) coefficient in Memory . This
command is available in the CommCam “Flat Field Correction / Manual Calibration ” section
:

Write function : “ w rstg 0 ” (ASCII): Reset (set to “x1”) the PRNU coefficients in
memory. This doesn’t affect the FFC User Memory Bank but only the active
coefficients in Memory.
Some Warnings can be issued from the PRNU/FPN Calibration Process as “pixel Overflow” of
“Pixel Underflow” because some pixels have been detected as too high or too low in the
source image to be corrected efficiently.
The Calculation result will be proposed anyway as it’s just a warning message.
The Status Register is the changed and displayed in CommCam “Status” section