User Manual - twentynine
5.3
Region of Interest (ROI)
The
Region of Interest
feature allows portion of the sensor array to be read out and transmitted over
transport layer. Information from pixels outside the ROI are discarded. Decreasing the ROI generally leads
to increasing the maximum allowed frame rate.
Figure 40: Region of Interest
Region of Interest
is defined by horizontal (
OffsetX
) and vertical (
OffsetY
) offset from image origin (top-left
corner) and region size in horizontal (
Width
) and vertical (
Height
) direction.
Parameter
Type
Description
Width
Integer
Horizontal size of the ROI image (in pixels)
Height
Integer
Vertical size of the ROI image (in pixels)
OffsetX
Integer
Horizontal offset from the origin to the ROI (in pixels)
OffsetY
Integer
Vertical offset from the origin to the ROI (in pixels)
Table 26: Region of Interest parameters
While the image acquisition process on the camera is active, only changes to the parameters that determine
the position of the ROI are allowed (
OffsetX, OffsetY
). Changes to parameters that define the ROI size
(
Width, Height
) are not allowed. Changes to parameters while the image acquisition process is active is
also called "on-the-fly" changes.
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