Optical EngineeringConnectionist model of the generalized Hough transform for optical implementation
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Pattern recognition techniques are widely used in many applications particularly in the area of industrial inspection where objects are identified from features in an image. In particular, the Radon transform ~RT! and the Hough transform ~HT! are known1,2 to be powerful tools for feature extraction. The digital techniques used to implement the RT and the HT require a large number of calculations, however, and as such are limited to non-real-time applications.