e2v ELIIXA+ 8k/4k CL, User Manual

Page: 36 / 56

® 8k/4k CL Color
36
e2v semiconductors SAS 2014
6.3.5.1 Activation

FFC Activation (
FFCEnable
) : Enable/disable the Flat Field Correction. This command is available in the CommCam
“Flat Field Correction” section :
 Read function : “r ffcp” : Returns the FFC Status (0 if disabled, 1 if enabled)
 Write function :

“w ffcp 1” : Enable the FFC.
 “w ffcp 0” : Disabled the FFC
6.3.5.2 Automatic Calibration

FPN/DSNU Calibration
:
o
FPN Calibration Control ( FPNCalibrationCtrl ) : Launch or abort of the FPN process for the Offsets calculation.
These commands are available in the CommCam “Flat Field Correction / Automatic Calibration ” section :

Read function : “r calo” : Returns the FPN Calculation Process Status (0 if finished, 1 if processing)
 Write function :
 “w calo 1” : Launch the FPN Calibration Process.

“w calo 0” : Abort the FPN Calibration Process.
o
FPN Coefficient Reset (
FPNReset
) : Reset the FPN (Offsets) coefficient in Memory. This command is available in
the CommCam “Flat Field Correction / Manual Calibration ” section :
 Write function : “w rsto 0” : Reset (set to 0) the FPN coefficients in memory. This doesn’t affect the FFC User
Memory Bank but only the active coefficients in Memory.

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” : Returns the PRNU Calculation Process Status (0 if finished, 1 if processing)
 Write function :
 “w calg 1” : Launch the PRNU Calibration Process.

“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” : 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 :
Register status is detailed chap §6.3.3.