User`s manual

AW00089316000 Standard Features
Basler ace GigE 273
You can set the Vertical Decimation 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 8
Camera.DecimationVertical.SetValue( 8);
// 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 on page 39.
10.9.1 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 acA2000-50gm 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.
Possible Image Distortion
Objects will only appear undistorted in the image, if the numbers of lines and columns are equal.
With all other combinations, the imaged objects will appear distorted. If, for example, vertical
decimation is set to 2, the imaged objects will appear shrunk by a factor of 2 compared to an image
without vertical 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.