ELiiXA® UC8/UC4
47
Eliixa_Color–revF 04/11
e2v semiconductors SAS 2011
How to perform the Flat Field Correction?
FPN/DSNU Calibration
¾
Cover the lens
¾
Launch the FPN Calibration : Grab and calculation is performed in few seconds
PRNU Calibration
The User must propose a white uniform target to the Camera (not a fixed paper).
The Gain/Light conditions must give a non saturated image in any color.
The Camera must be set in the final conditions of Light/ Gain and in the final position in the System.
The White Balance and color Matrix can be enabled: They don’t affect the result. but after the FFC
calibration, the User will have to perform a new White Balance
¾
White uniform (moving) target
¾
Launch the FFC
¾
Enable the FFC
¾
You can save the FFC result (both FPN+PRNU in the same time) in one of the 4 x FFC User Banks.
Advices
The ELIIXA has 4 x FFC Banks to save 4 x different FFC calibrations. You can use this feature if your
system needs some different conditions of lightning and/or Gain because it’s looking for different targets:
You can perform one FFC per condition of Gain/setting of the Camera ( 4 Max) and recall one of the four
global settings (Camera Configu FFC + Color management) when required.
•
FFC Activation
:
Enable/disable the Flat Field Correction
.
This command is available in the CommCam
“Flat Field Correction” section :
Ö
Read function : “
r ffcp
” : Returns the FFC Status (0 if disabled, 1 if enabled)
Ö
Write function :
“
w ffcp 1
”: Enable the FFC.
Pi
xels
P
ixe
l v
alu
e
blue
Red
Green
Nir/Mono
