W. A. Perkins

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  • W. A. Perkins
  • IEEE Transactions on Pattern Analysis and Machine…
  • 1980
A new method for segmenting images using abrupt changes in intensity (edge points) to separate regions of smoothly varying intensity is discussed. Region segmentation using edge points has not been very successful in the past because small gaps would allow merging of dissimilar regions. The present method uses an expansion-contraction technique in which the(More)
  • W. A. Perkins
  • IEEE Transactions on Pattern Analysis and Machine…
  • 1983
A computer vision inspection system has been developed that learns the difference between good and bad parts by being shown several identified good and bad parts. The model, formed during the training session, contains identifying points which are used for locating parts and inspection tests which apply only to pertinent regions of the part. Using the(More)
A vision system has been developed which can determine the position and orientation of complex curved objects in gray-level noisy scenes. The system organizes and reduces the image data from a digitized picture to a compact representation having the appearance of a line drawing. This compact image representation can be used for forming a model under(More)