Binocular Shading and Visual Surface Reconstruction.

Abstract

Zero-crossing or feature-point based stereo algorithms can, by definition, determine explicit depth information only at particular points in the image. To compute a complete surface description, this sparse depth map must be interpolated. A computational theory of this interpolation or reconstruction process, based on a surface consistency constraint, has previously been proposed. In order to provide stronger boundary conditions for the interpolation process, other visual cues to surface shape are examined in this paper. In particular, it is shown that, in principle, shading information from the two views can be used to determine the orientation of the surface normal along the feature-point contours, as well as the parameters of the reflective properties of the surface material. The numerical stability of the resulting equations is also examined. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1982
Accession Number
ADA127058

Entities

People

  • W. E. L. Grimson

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Artificial Intelligence
  • Boundaries
  • Computational Science
  • Computer Graphics
  • Computer Science
  • Computer Stereo Vision
  • Computer Vision
  • Crossings
  • Equations
  • Geometry
  • Interpolation
  • Machine Perception
  • Materials
  • Orientation (Direction)
  • Two Dimensional

Readers

  • Computer Vision.