AVIIVA® EM1
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1043D - AVIIVA EM1 –04/11
e2v semiconductors SAS 2011
How to perform the Flat Field Correction ?
FPN/DSNU Calibration
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Cover the lens
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Launch the FPN Calibration : Grab and calculation is performed in few seconds
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.
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White uniform (moving) target
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Launch the FFC
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Enable the FFC
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You can save the FFC result (both FPN+PRNU in the same time) in one of the 4 x FFC User Banks.
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The user target and Gain are saved with the associated FFC in the same memory.
Advices
The AVIIVA EM1 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.
Pi
xels
3020
User Target value
Standard FFC computed on
the max of the line
Adjustment gain
