How to extract a circular ring from a Image?

[Wang xiang yang002]

How to use the image manipulation VIs? I want to extract a circular ring from a image file which include the known postion and radius infomations.

Thanks!

[dadreamer]

IMAQ Unwrap VI

Example is at \LabVIEW 20xx\examples\Vision\Image Management\Unwrap Barcode.vi. For U16 images also see this: IMAQ Unwrap Example - not working properly with U16 image type?

Edited 1 hour ago by dadreamer