Image analysis – Applications – Manufacturing or product inspection
Reexamination Certificate
2006-09-05
2006-09-05
Chawan, Sheela (Department: 2623)
Image analysis
Applications
Manufacturing or product inspection
C382S151000, C382S199000, C382S287000, C250S492220
Reexamination Certificate
active
07103210
ABSTRACT:
A position detection apparatus for detecting a position of a mark on an object includes a camera which captures an image of the mark, an extraction section which extracts a plurality of edge positions of the mark based on a signal derived from the image of the mark, each of the edge positions being associated with a combination of a direction and a polarity of the signal, and a determination section which determines a position of the mark, by comparing each of the plurality of extracted edge positions with a corresponding one of templates prepared for the respective combinations.
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Canon Kabushiki Kaisha
Chawan Sheela
Fitzpatrick ,Cella, Harper & Scinto
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