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Proceedings Paper

Uniqueness of shape recovery of a polyhedron from a single shading image
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 (or concave) shape solutions usually exist for a pyramid with three or more visible facets. However, if interreflection distribution is used as a constraint to limit 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: 3 October 1996
PDF: 9 pages
Proc. SPIE 2899, Automated Optical Inspection for Industry, (3 October 1996); doi: 10.1117/12.253006
Show Author Affiliations
Jun Yang, RIKEN--The Institute of Physical and Chemical Research (Japan)
Dili Zhang, Nagoya Univ. (Japan)
Noboru Ohnishi, Nagoya Univ. (Japan)
Noboru Sugie, Meijo Univ. (Japan)


Published in SPIE Proceedings Vol. 2899:
Automated Optical Inspection for Industry
Frederick Y. Wu; Shenghua Ye, Editor(s)

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