Visual Integration and Detection of Discontinuities: The Key Role of Intensity Edges

  • Authors:
  • Ed Gamble;Tomaso Poggio

  • Affiliations:
  • -;-

  • Venue:
  • Visual Integration and Detection of Discontinuities: The Key Role of Intensity Edges
  • Year:
  • 1987

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Abstract

Integration of several vision modules is likely to be one of the keys to the power and robustness of the human visual system. We suggest that integration is best performed at the location of discontinuities in early processes, such as discontinuities in image brightness, depth, motion, texture, and color. Coupled Markov Random Field models can be used to combine vision modalities with their discontinuities. We derive a scheme to integrate intensity edges with stereo depth and motion field information and show results from a Connection Machine algorithm on synthetic and natural images. The use of intensity edges to integrate other visual cues and to help discover discontinuities emerges as a general and powerful principle.