V4.7 | 06/24/2024 | 11165414
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7.2.7 Gamma
This feature oer the possibility of compensating nonlinearity in the perception of light by
the human eye.
For this correction, the corrected pixel intensity (Y') is calculated from the original intensity
of the sensor's pixel (Y
original
) and correction factor γ using the following formula (in over-
simplied version):
Y' = Y
original
γ
The correction factor γ is adjustable from 0.1 to 2.
The values of the calculated intensities are entered into the Look-Up-Table. Thereby pre-
viously existing values within the LUT will be overwritten.
Notice
If the LUT feature is disabled on the software side, the gamma correction feature is
disabled, too.
Notice
For cameras with long readout times (e.g.: VCXU-201M.R / VCXU-123M) may cause
visual eects while setting a value for gamma and simultaneous image acquisition, be-
cause access to LUT is not locked against the pixel stream.
This can be prevented by stopping the camera (AcquisitionStop) before setting.
Name Gamma
Category AnalogControl
Interface IFloat
Access Read / Write
Unit -
Values 0.1 - 2.0 (Increment: 0.10)
7.2.8 boBlackLevelAutoAdjustEnable(SWIRonly)
Enables the black level auto adjust of the image sensor. Disable the black level auto ad-
just only after sucient evaluations of the sensor-behaviour in the intended use scenario.
Disabling the black level auto adjust can cause a shift of the black level to a dierent value
than set in the feature BlackLevel.
Disabling the black level auto adjust function can be an option to mitigate issues for appli-
cations that use very long ExposureTimes and suer from a decreased saturation level or
applications that apply signicant changes to ExposureTime in a rapid manner, especially
with TriggerMode = On.
Name boBlackLevelAutoAdjustEnable
Category AnalogControl
Interface IBoolean
Access Read / Write
Unit -
Values
true = 1 (On)
false = 0 (O)
Non-linear perception of
the human eye.
H - Perception of bright-
ness
E - Energy of light
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