IDEC DATAVS2 Series - Manual (Page 42)

SVS2 Series Instruction Manual
37
Example
Add a Pattern Match locator to current inspection.
Select "Pattern Match" from the pull-down menu:
Position the control on the reference image in the work area: the pointer changes shape as soon as it
enters the work area. Left-click once at any position to create a default rectangular ROI. At the same
time, the control features and the result of its application to the reference image appear in the control
panel.
Set ROI size and position as required, as explained above.
The result indicated by STATUS is also highlighted by the ROI border changing colour.
As soon as values change, result is calculated without delay.
Hereafter, the Figure A and B show a working example of the Pattern Match Locator. In this particular
case, the Pattern Match Locator search for the postal stamp position, then a Contrast Control is
applied (see Section 8.5.2 for details). As shown, this locator is capable to detect both the horizontal
and vertical translation of the envelope in the inspection area.
Fig. A Pattern Match Locator: Reference Image Fig. B Pattern Match Locator: Effect on a
translated object