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Proceedings Paper

Uniqueness of shape recovery based on interreflections
Author(s): Jun Yang; Dili Zhang; Noboru Ohnishi; Noboru Sugie
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Paper Abstract

We discuss the uniqueness of 3D shape recovery of a polyhedron from a single shading image, and propose an approach to uniquely determine the concave shape solution by using interreflections as a constraint. We show that if interreflection distribution is not considered, multiple convex shape solutions usually exist for a pyramid with three or more visible facets. However, if interreflection distribution is used as a constraint to limits the shape of polyhedron, polyhedral shape can be uniquely determined. Interreflections, which were considered to be deleterious in conventional approaches, are an important constraint for shape-from-shading.

Paper Details

Date Published: 29 October 1996
PDF: 11 pages
Proc. SPIE 2904, Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling, (29 October 1996); doi: 10.1117/12.256271
Show Author Affiliations
Jun Yang, RIKEN (Japan)
Dili Zhang, Nagoya Univ. (Japan)
Noboru Ohnishi, Nagoya Univ. (Japan)
Noboru Sugie, Meijo Univ. (Japan)


Published in SPIE Proceedings Vol. 2904:
Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling
David P. Casasent, Editor(s)

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