IDEC DATAVS1 Series - Manual (Page 51)

Instruction Manual SVS1 Series
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7.4. Position
• Description
This control allows you to detect the edge (edge detection ) and the position of the object
inside the relative ROI.
Based on the first derivative of the pixel brightness variation function, the maximum positive peak
is identified if control is targeting a positive edge, or the maximum negative peak is identified
when targeting a negative edge. A point is considered an edge point when its brightness
variation exceeds this threshold, which is a function of the peak value found.
• Selection
• Positioning
Select the control and press SET on the corresponding icon to create the rectangular ROI in the
middle of the field range.
To modify the position of the ROI, move to the Move ROI icon and then press SET. It is now
possible to move the ROI using the ARROW buttons. Once you have achieved the desired
position, press the TEACH button to return to the Setup menu. If you wish to modify the ROI
size, select the Resize ROI from the Setup menu (using the SET button again). It is now possible
to increase or decrease the ROI size using the ARROW buttons.