Considerations When Using Binning - Basler DART BCON SERIES User Manual

Features AW00136902000
11.8.3

Considerations When Using Binning

Binning's Effect on ROI Settings
When you have the camera set to use binning, keep in mind that the settings for your image region
of interest (ROI) will refer to the binned rows and columns in the sensor and not to the physical rows
and columns in the sensor as they normally would.
For example, assume that you are using a daA1600-60um camera set for 2 by 2 binning as
described above. In this case, you would act as if you were actually working with an 800 column by
600 row sensor when setting your ROI parameters.
For more information about the Image Region of Interest (ROI) feature, see Section 11.7 on
page 97.
Increased Response to Light
Using binning with summed pixel values (see "Binning Modes" in Section 11.8 on page 100) can
greatly increase the camera's response to light. When pixel values are summed, the acquired
images may look overexposed. If this is the case, you can reduce the lens aperture, the intensity of
your illumination, the camera's exposure time setting, or the camera's gain setting.
Reduced Resolution
Using binning effectively reduces the resolution of the camera's imaging sensor. For example, the
sensor in the daA1600-60um camera normally has a resolution of 1600 (H) x 1200 (V). If you set
this camera to use horizontal binning by 2 and vertical binning by 2, the effective resolution of the
sensor is reduced to 800 (H) by 600 (V).
Possible Image Distortion
Objects will only appear undistorted in the image if the numbers of binned lines and columns are
equal. With all other combinations, the imaged objects will appear distorted. If, for example, vertical
binning by 2 is combined with horizontal binning by 4, the widths of the imaged objects will appear
shrunk by a factor of 2 compared to the heights.
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