Area Of Interest (Aoi) - Basler A400K User Manual

Basic Operation and Features

3.8 Area of Interest (AOI)

The area of interest feature lets you specify a portion of the CMOS array and during operation,
only the pixel information from the specified portion is transferred out of the camera.
The size of the area of interest is defined by declaring a starting column, a width in columns, a
starting line and a height in lines. Starting columns can only be selected in multiples of 16 (+1),
that is, the starting column can be 1, 17, 33, and so on. The width can only be multiples of 16, that
is, 16, 32, 48, and so on.
Reference position is the top left corner of the image. For example, suppose that you specify the
starting column as 17, the width in columns as 16, the starting line as 8 and the height in lines as
10. As shown in Figure 3-11, the camera will only transmit pixel data from within the defined area.
Information from the pixels outside of the area of interest is discarded.
Figure 3-11: Area of Interest
In normal operation, the camera is set to use all of the pixels in the array. To use all
of the pixels, the starting column should be set to 1, the width in columns to 2352,
the starting line to 1 and the height in lines to 1726.
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Basler A400k