AW00123409000 Features
Basler ace USB 3.0 209
Guidelines for Setting the Image ROI
By default, the image ROI is set to use the full resolution of the camera’s sensor. You can change
the size and the position of the image ROI by changing the value of the camera’s OffsetX, OffsetY,
Width, and Height parameters.
The value of the OffsetX parameter determines the starting column for the region of interest.
The value of the OffsetY parameter determines the starting row for the region of interest.
The value of the Width parameter determines the width of the region of interest.
The value of the Height parameter determines the height of the region of interest.
The value of the WidthMax parameter determines the maximum allowed width of the region of
interest for the current OffsetX setting.
The value of the HeightMax parameter determines maximum allowed height of the region of
interest for the current OffsetY setting.
When you are setting the camera’s region of interest, you must follow these guidelines:
On all camera models:
The sum of the OffsetX setting plus the Width setting must not exceed the width of the
camera’s sensor. For example, on the acA1920-25um, the sum of the OffsetX setting plus the
Width setting must not exceed 1920.
The sum of the OffsetY setting plus the Height setting must not exceed the height of the
camera’s sensor. For example, on the acA1920-25um, the sum of the OffsetY setting plus the
Height setting must not exceed 1080.
Settings with Binning Disabled
The minimum settings and minimum increments for OffsetX, OffsetY, Width, and Height are given
below, where a distinction is made between mono and color cameras. It is assumed that binning is
disabled.
If you want to set Offset X, make sure the Center X feature for automatic ROI
centering is disabled.
If you want to set Offset Y, make sure the Center Y feature for automatic ROI
centering is disabled.
For more information about automatic ROI centering and the effects on CenterX
and CenterY settings, see Section 7.6.1 on page 214.
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