Inventor
CHANG YIAN LENG
US4 patents
Patents
4 patentsUS6324299B1Nov 27, 2001
Object image search using sub-models
COGNEX CORP97 citations96
US6151406ANov 21, 2000
Method and apparatus for locating ball grid array packages from two-dimensional image data
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US6396942B1May 28, 2002
Method and apparatus for locating ball grid array packages from two-dimensional image data
COGNEX CORP15 citations80
US6252986B1Jun 26, 2001
Locating an image of an object having a concentric profile
COGNEX CORP7 citations70