Uniqueness of shape recovery based on interreflections

Jun Yang; Dili Zhang; Noboru Ohnishi; Noboru Sugie

doi:10.1117/12.256271

29 October 1996 Uniqueness of shape recovery based on interreflections

Jun Yang, Dili Zhang, Noboru Ohnishi, Noboru Sugie

Proceedings Volume 2904, Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling; (1996) https://doi.org/10.1117/12.256271
Event: Photonics East '96, 1996, Boston, MA, United States

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.

Citation Download Citation

Jun Yang, Dili Zhang, Noboru Ohnishi, and Noboru Sugie "Uniqueness of shape recovery based on interreflections", Proc. SPIE 2904, Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling, (29 October 1996); https://doi.org/10.1117/12.256271

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