Baumer TXG - 4.1.6 Region of Interest (ROI)

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4.1.6 RegionofInterest(ROI)
With the "Region of Interest" function it is possible to predene a so-called Region of Inter-
est (ROI) or Partial Scan. This ROI is an area of pixels of the sensor. On image acquisi-
tion, only the information of these pixels is sent to the PC. Therefore all the lines of the
sensor need not be read out, which decreases the readout time (t
readout
). This increases
the frame rate.
This function is employed, when only a region of the eld of view is of interest. It is coupled
to a reduction in resolution.
The ROI is specied by four values:
▪ Offset X - x-coordinate of the rst relevant pixel
▪ Offset Y - y-coordinate of the rst relevant pixel
▪ Size X - horizontal size of the ROI
▪ Size Y - vertical size of the ROI
Start ROI
End ROI
In the illustration below, readout time would be decreased to 40%, compared with a full
frame readout.
Readout lines
◄Figure35
Partial Scan:
Parameters of the ROI.
◄Figure36
Decrease in readout
time by using partial
scan.