Image analysis – Applications – Manufacturing or product inspection
Patent
1997-03-18
1999-08-03
Boudreau, Leo H.
Image analysis
Applications
Manufacturing or product inspection
382199, 382291, G06K 900, G06K 948
Patent
active
059335238
ABSTRACT:
Determining the position of a generally rectangular device is achieved by performing subsampling of image data, thresholding of the subsampled data, extraction of boundary features based on the output of the thresholding, calculation of correspondence between extracted boundary features and the generally rectangular device, and a final fit against a model of the generally rectangular device. Correspondence between the boundary features of the image and the generally rectangular device is performed by locating points in the extracted boundary feature which may correspond to corners of the generally rectangular device, removing those points which correspond to known objects other than the generally rectangular device, removing those points likely to belong to unknown objects, and fitting the points to an input model of the generally rectangular device to determine its position.
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Bachelder Ivan A.
Drisko Robert
Motoyama Toshimitsu
Boudreau Leo H.
Cognex Corporation
Mehta Bhavesh
Miele Anthony
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