Representing the dynamics of the occluding contour

W. Brent Seales, Charles R. Dyer

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


This paper introduces a novel, viewer-centered approach to modeling the geometry of the visible occluding contour of solid 3D shape. A description of the change in appearance of the rim and occluding contour as a function of viewpoint allows the organization of features of the occluding contour for indexing and matching. This organization makes the features of the occluding contour explicit for matching in a dynamic context where image features are changing over time, and in a static context where matching methods must iteratively refine an estimation of viewpoint. The rim appearance representation models the exact appearance of the occluding contour formed by the edges of a polyhedron that is assumed to be an approximation of a smooth shape. An algorithm is presented for constructing the rim appearance representation. Bounds on space and time are given, and implementation results show that the rim appearance is significantly smaller than the aspect graph and the aspect representation.

Original languageEnglish
Pages (from-to)47-58
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1991
EventSensor Fusion III: 3-D Perception and Recognition - Boston, MA, USA
Duration: Nov 5 1990Nov 8 1990

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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