Features AW00123402000
198 Basler ace USB 3.0
You can set the Decimation Vertical parameter value from within your application software by using
the Basler pylon API. The following code snippet illustrates using the API to set the parameter
values:
// Enable Vertical Decimation by 2
camera.DecimationVertical.SetValue(2);
// Disable Vertical Decimation
camera.DecimationVertical.SetValue(1);
You can also use the Basler pylon Viewer application to easily set the parameters.
For more information about the pylon API and the pylon Viewer, see Section 3.1 on page 37.
8.7.1 Considerations When Using Decimation
Reduced Vertical Resolution
Using vertical decimation effectively reduces the vertical resolution of the camera’s imaging sensor.
For example, the sensor in the acA2000-165um camera normally has a resolution of 2048 (H) x
1088 (V). If you set this camera to use vertical decimation by 5, the effective resolution of the sensor
is reduced to 2048 (H) by 217 (V).
If you reduce the vertical resolution by using the vertical decimation feature, you can increase the
frame rate of the camera.
Image Distortion
The imaged objects will appear shrunk in vertical direction due to vertical decimation while no
modification will occur in horizontal direction. Accordingly, the image will be distorted. If, for
example, vertical decimation is set to 2, the imaged objects will appear shrunk by a factor of 2
compared to the horizontal direction and compared to an image without decimation.
Binning and Vertical Decimation
If vertical binning is used, vertical decimation is automatically disabled, and vice versa, i.e. if vertical
decimation is used, vertical binning is disabled.
Horizontal binning works independently from the decimation feature.
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