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10.1.6 Region of Interest (ROI)
With this functions it is possible to predefine a so-called Region of Interest (ROI) or Partial
Scan. The ROI is an area of pixels of the sensor. After image acquisition, only the informa-
tion of these pixels is sent to the PC.
This functions is turned on, when only a region of the field of view is of interest. It is
coupled to a reduction in resolution and increases the frame rate.
The ROI is specified by following values:
▪
Region Selector Region 0
▪
Region Mode On/Off
▪ Offset X - x-coordinate of the first relevant pixel
▪ Offset Y - y-coordinate of the first relevant pixel
▪ Width
- horizontal size of the ROI
▪
Height - vertical size of the ROI
Notice
The values of the Offset X and Size X must be a multible of 32!
The step size in Y direction is 1 pixel at monochrome cameras and 2 pixel at color cam-
eras.
Notice
If defect pixels should exist in the first (mono cameras) or in the first two (color
cameras) rows or columns of a ROI, these cannot be corrected with the defect
pixel correction.
In this case you need to move or increase the ROI by a few
pixels.
The coordinates of defect pixels can be read out with the Camera Explorer
(Category: Control LUT).
Start ROI
End ROI
◄ Figure 14
Parameters of the ROI.