Finding Picture Edges Through Collinearity of Feature Points

  • Authors:
  • F. O'Gorman;M. B. Clowes

  • Affiliations:
  • Laboratory of Experimental Psychology, University of Sussex;-

  • Venue:
  • IEEE Transactions on Computers
  • Year:
  • 1976

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Abstract

The recovery of straight picture edges from digitizations of scenes containing polyhedra ("line finding") is central to the functioning of scene analysis programs. While recognizing that recovery properly involves a computational mobilization of a great deal of knowledge-supported context, there remain some basic issues of representation which govern the way in which the primary data grey levels are addressed. The paper describes a parametric representation of straight picture edges and its procedural deployment in the recovery of edges from digitizations of scenes whose contents are essentially polyhedra with strong visible shadows.