Standard Features AW00097603000
156 Basler aviator GigE
10.3 Black Level
10.3.1 Black Level with Four Tap Sensor Digitization
Adjusting the camera’s black level will result in an offset to the pixel values output from the camera.
As mentioned in the "Functional Description" section of this manual, when the camera is set for four
tap sensor digitization, the imaging sensor is divided into four quadrants for readout purposes. Each
quadrant is read out by a separate tap (electronic circuit). As a result of this design, there are five
black level parameters available: Black Level All, Black Level Tap 1, and Black Level Tap 2, Black
Level Tap 3, and Black Level Tap 4.
Black Level All is a global adjustment, i.e., its setting affects all four quadrants of the sensor.
Black Level Tap 1 sets an additional amount of black level for the top left quadrant of the sensor.
The total black level for the top left quadrant will be the sum of the Black Level All value plus the
Black Level Tap 1 value.
Black Level Tap 2 sets an additional amount of black level for the top right quadrant of the sensor.
The total black level for the top right quadrant will be the sum of the Black Level All value plus the
Black Level Tap 2 value.
Black Level Tap 3 sets an additional amount of black level for the bottom left quadrant of the
sensor. The total black level for the bottom left quadrant will be the sum of the Black Level All value
plus the Black Level Tap 3 value.
Black Level Tap 4 sets an additional amount of black level for the bottom right quadrant of the
sensor. The total black level for the bottom right quadrant will be the sum of the Black Level All value
plus the Black Level Tap 4 value.
If the camera is set for
8 bit pixel depth, an increase of 64 in a black level setting will result in a positive offset of 1 in
the pixel values output from the camera. And a decrease of 64 in a black level setting result in
a negative offset of 1 in the pixel values output from the camera.
12 bit pixel depth, an increase of 4 in a black level setting will result in a positive offset of 1 in
the pixel values output from the camera. A decrease of 4 in a black level setting will result in a
negative offset of 1 in the pixel values output from the camera.
When adjusting the black levels, the following guidelines must be met:
The sum of the Black Level All plus the Black Level Tap 1 parameter settings must be less than
or equal to 950.
The sum of the Black Level All plus the Black Level Tap 2 parameter settings must be less than
or equal to 950.
The sum of the Black Level All plus the Black Level Tap 3 parameter settings must be less than
or equal to 950.
The sum of the Black Level All plus the Black Level Tap 4 parameter settings must be less than
or equal to 950.
To Next Page
Loading...
Need help?
General
