Generalized Hough Transform for Object Classification in the Maritime Domain
Naval Postgraduate School Monterey United States
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A Generalized Hough Transform GHT-based classification scheme for an object-of-interest in maritime-domain images is proposed in this thesis. First, the object edge points are extracted and used to generate a representation of the object as a Hough coordinate table by using the GHT algorithm. The table is then reformatted to a contour map called a Hough features map. The coordinates of dominant peaks or Hough features on the map are extracted and fed into a feed-forward, back-propagation neural network for classification. In this research, the scheme is tested using perfect shapes of triangles, squares, circles, andstars and maritime-domain images of ships, aircraft, and clouds, and the classification results obtained are reported.