Image analysis – Applications – Manufacturing or product inspection
Patent
1996-12-19
1999-06-15
Boudreau, Leo H.
Image analysis
Applications
Manufacturing or product inspection
382181, G06K 900
Patent
active
059129840
ABSTRACT:
Inspection of solder paste on a printed circuit board using a before printing image (pre-image) to normalize an after printing image (post-image) of the printed circuit board. Existing lighting and optics used for alignment of the screen printing stencil to the printed circuit board are used for the solder paste inspection. A stencil in the screen printing process is also inspected using a before printing image (pre) to normalize an after printing image (post) of the stencil.
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Koljonen Juha
Michael David J.
Nichani Sanjay
Roberts Peter
Boudreau Leo H.
Cognex Corporation
Michaelis Brian
Tadayon Bijan
Weinzimmer Russ
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