Machine vision methods and systems for boundary feature comparison of patterns and images
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United States of America Patent
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Feb 3, 2004
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N/A
app pub date -
Oct 23, 2001
filing date -
Dec 18, 1998
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Abstract
The invention provides boundary-based machine vision methods and systems for comparing a pattern to an image. These contemplate the steps of finding points on a boundary in the image; identifying one or more boundary features, at least one of which is made up of multiple such points; determining point-by-point relationships, if any, between each point defining the boundary feature in the image and points on a boundary in the pattern; and determining a relationship between the boundary feature in the image and the pattern (e.g., whether the boundary feature in the image matches a corresponding feature in the pattern) as a function of the point-by-point relationships.
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