® 8k/4k CL Color
35
e2v semiconductors SAS 2014
How to perform the Flat Field Correction ?
FPN/DSNU Calibration
Cover the lens
Launch the FPN Calibration : Grab and calculation is performed in few seconds
Offset format : S9.1 => -256..+255.5 by step of ½
PRNU Calibration
The User must propose a white/gray uniform target to the Camera (not a fixed paper).
The Gain/Light conditions must give a non saturated image in any Line.
The Camera must be set in the final conditions of Light/ Gain and in the final position in the System.
I f required, set a user target for the FFC adjust and enable it.
White uniform (moving) target
Launch the FFC
Enable the FFC
You can save the FFC result (both FPN+PRNU in the same time) in one of the x4 FFC User Banks.
The user target and Gain are saved with the associated FFC in the same memory.
Advices
The Cameras have 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 of the inspection of different objects : 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 + Line Balance) when required.
Pixels
3020
User Target value
Standard FFC computed on
the max of the line
Adjustment gain
