Cognex In-Sight 1721, User Manual

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Section 3: Configuring a Wafer ID Application In-Sight
®
1700 Series Wafer Reader
32
3.5.14 Region
The Region defines the area in which the wafer mark is expected to appear in the FOV.
The mark must be sufficiently illuminated and entirely contained within the Region or the
read will fail. Generally, the mark may be rotated as much as
±
5 degrees within the
horizontal axis of the region without a significant decrease in readability. The image
coordinates and the size of the region (row, column, height, width) are displayed below
the box. If a rotation or curve is set for the Region, the Theta (rotation) and Phi
(curvature) are also displayed.
To set the Region:
1 Click the Edit Region button. The image area will expand, and the interactive region
box will appear (Figure 3-6).
Figure 3-6: Editing the Region
2 Adjust the region as necessary to encompass the entire mark.
To move the region, position the cursor anywhere inside the box, then click
and hold the left mouse button while dragging. To move the region one pixel at a
time, use the arrow keys on the keyboard.
To resize the region, position the cursor over an edge or corner of the region,
then click and hold the left mouse button while dragging. To resize the region one
pixel at a time, use Shift-arrow keys.