Patent Document ID: 5452368
Application ID: 08100829
Patent Status: 1

Claim One:
1. A method of detecting defects in leads of a semiconductor package comprising: providing a first semiconductor package having a first conductive line; acquiring a first grey level image of the first conductive line; providing a second semiconductor package having a second conductive line; acquiring a second grey level image of the second conductive line; converting the first grey level image to a first edge feature image; converting the second grey level image to a second edge feature image; skeletonizing the first edge feature image to form a first skeletonized image; dilating the second edge feature image to form a first dilated image; comparing the first skeletonized image to the first dilated image; detecting shapes in the first skeletonized image that are not contained within the first dilated image; skeletonizing the second edge feature image to form a second skeletonized image; dilating the first edge feature image to form a second dilated image; comparing the second skeletonized image to the second dilated image; and detecting shapes in the second skeletonized image that are not contained within the second dilated image.