IDEC DATAVS2 Series - Manual (Page 40)

SVS2 Series Instruction Manual
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8.4.2. Pattern Match Locator
Description
In pattern match operation, sample object and target object are compared to determine if they are
similar. (Pattern match ►)
The locator searches for the sample through 360° inside the inspection area and determines its
position. In this way it is possible to detect the horizontal translations and either the vertical
displacement of the object among the inspection area.
Graphically, the locator looks like two rectangles, one inside the other:
• The outer blue rectangle is the search area;
• the smaller inner rectangle (orange) represents the sample.
During the setup process, you need to define the sample to be identified. The system stores the
brightness value of each composing pixel.
During the inspection, the locator will search for the sample in the region of interest. When it finds the
sample, it will highlight it with an orange rectangle.
Degree of similarity and accuracy may be set from the control panel.
Selection
Pointer shape
Positioning
Click any point inside the work area to create a rectangular ROI with a small white square at the
bottom right corner.
To change ROI size, left-click and drag the square.
To move the ROI, place the pointer on any side of the ROI. The pointer changes to a cross. Press and
hold the left mouse button and drag the rectangle to the desired position.
Parameters