IDEC DATAVS1 Series - Manual (Page 62)

Instruction Manual SVS1 Series
57
• Selection
• Positioning
The positioning and resizing of the ROI for the Pattern Match control is different compared to
what we have seen for the other inspection tools. During the setup phase, it is in fact necessary
to define the pattern to be searched inside the image and also the section of the area which has
to be searched.
Select the control by pressing SET on the corresponding icon to create two rectangular ROI:
One, in the middle of the focus range, that represents the sample to be searched, the other is as
large as the entire image and constitutes the pattern search area.
Press the SET button to modify one or the other area. The edge of the currently selected area will
flash
and the label of the ROI will be highlighted in red.
To modify the size of the two ROI, move the cursor to the Size ROI icon and then press SET. It
is now possible to resize the ROI using the ARROW buttons. The sizes of two areas (expressed
in pixels) are displayed on the right side of the screen. Press the SET button to modify one or the
other area. The edge of the currently selected area will flash. Once you have achieved the
desired resizing, press the TEACH button to return to the Setup menu. If you wish to modify the
ROI positions, select the Move ROI from the Setup menu (using the SET button again). It is now
possible to move the ROI using the ARROW buttons on the keyboard. Once again, to change the
current ROI simply press the SET button. To conclude, press TEACH to save the modifications.