Correction - Photon Focus MV2-D1280-640 User Manual

7 Graphical User Interface (GUI)

7.1.5 Correction

This tab contains correction settings.
Figure 7.7: MV2-D1280-640 correction panel
Correction Mode
This camera has image pre-processing features, that compensate for non-uniformities caused
by the sensor, the lens or the illumination.
Off: No correction.
Offset: Activate offset correction
Offset + Gain: Activate offset and gain correction.
Black Reference Image: Output the black reference image that is currently stored in the
camera RAM (for debugging reasons).
Grey Reference Image: Output the grey reference image that is currently stored in the camera
RAM (for debugging reasons).
Calibration
Offset (FPN) Correction: The offset (Fixed Pattern Noise FPN) correction is based on a black
reference image, which is taken at no illumination (e.g. lens aperture completely closed).
The black reference image contains the fixed-pattern noise of the sensor, which can be
subtracted from the live images in order to minimize the static noise. Close the lens of the
camera. Click on the Validation button. If the Set Black Ref - button is still inactive, the
average of the image is out of range. Change to panel Exposure and change the Property
BlackLevelOffset until the average of the image is between 160 and 400DN. Click again
on the Validation button and then on the Set Black Ref Button.
If only offset correction is needed it is not necessary to calibrate a grey image
(see Calculate).
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