How to designate a rectangular region within an image?

[Y.L.]

Hi, in IMAQ Match Pattern VI, there is an Optional Rectangle connector. How do i use the 1D array connected to the connector to designate the rectangular region that i'm looking for?

Thank you.

[BruceAmmons]

The optional rectangle is an array of four values. They are the left, top, right, bottom sides of the rectangle.

The easiest way to define the rectangle is to draw a region of interest (ROI) on the image, and use the global rectangle from the ROI. It should be in the same format as the optional rectangle.

Bruce