Optics: measuring and testing – By configuration comparison – With comparison to master – desired shape – or reference voltage
Patent
1987-10-30
1990-03-06
Rosenberger, Richard A.
Optics: measuring and testing
By configuration comparison
With comparison to master, desired shape, or reference voltage
382 8, 382 41, G01B 1100
Patent
active
049060996
ABSTRACT:
Products having optically detectable straight line segments are inspected for acceptability by forming one or more one-dimensional images of the product in which properly aligned straight line segments are respectively focused to points in the image. Such parameters as the location and image intensity of these one-dimensional image points are used to determine whether or not the product is acceptable. An optical Hough transform underlies these product inspection techniques.
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Jackson Robert R.
Philip Morris Incorporated
Rosenberger Richard A.
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