32
Region of Interest (ROI)
9.1.8
With the "
Region of Interest" (ROI) function, you can predefine a so-called Region of
Interest (ROI) or Partial Scan. This ROI is an area of pixels of the sensor. When an im-
age is acquired, only the information about these pixels is transferred to the PC. Not all
lines of the sensor are read out, which therefore decreases the readout time (t
readout
). This
increases the frame rate.
This function is used when only a particular region of the field of view is of interest. It is
coupled with a reduction in resolution.
The
ROI is specified by four values:
▪ Offset X - x-coordinate of the first relevant pixel
▪ Offset Y - y-coordinate of the first relevant pixel
▪
Size X - horizontal size of the ROI
▪
Size Y - vertical size of the ROI
Start ROI
End ROI
ROI Readout
In the illustration below, readout time would decrease to 40% of a full frame readout.
Readout lines
Figure 15 ►
ROI: Parameters
Figure 16 ►
Decrease in readout
time by using partial
scan.
Summary of Contents for USB3 Vision
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Page 5: ...5 15 Warranty Notes 57 16 Support 57 17 Conformity 17 1 CE 17 2 RoHS ...
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