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Proceedings Paper

Three-dimensional computer visions for generating a complete B-Reps solid model from multiple views of polyhedra
Author(s): Katsuhiro Kitajima; Hirokazu Maki
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Paper Abstract

This paper presents a series of unique methods to generate a complete B-Reps type solid model, based on the information of stereo image pairs from multiple views that are obtained by taking pictures of polyhedral objects with stereo-cameras. First, we present a method to generate 2D B-Reps that become a basis of topological information of 3D B-Reps, and a hierarchical method to determine corresponding point pairs. Then, by introducing an open shell, a set of visible faces with a boundary, we present a method to generate the open shell regularly in terms of geometry to represent a result of recognition for a single view. Finally, after discussing the problems when unifying plural open shells obtained for multiple views into a solid, we propose a method to overcome them and generate a complete solid (a closed shell) model. This paper asserts that by outputting the B-Reps in terms of the data structure of a 3D CAD a variety of applications become possible, and that, this model, which generates open shells in an intermediate stage, is also effective in reducing shape errors (relative positional errors).

Paper Details

Date Published: 29 November 1993
PDF: 12 pages
Proc. SPIE 2063, Vision, Sensors, and Control for Automated Manufacturing Systems, (29 November 1993); doi: 10.1117/12.164971
Show Author Affiliations
Katsuhiro Kitajima, Tokyo Univ. of Agriculture and Technology (Japan)
Hirokazu Maki, Nikon Corp. (Japan)

Published in SPIE Proceedings Vol. 2063:
Vision, Sensors, and Control for Automated Manufacturing Systems
Scott S. Breidenthal; Alan A. Desrochers, Editor(s)

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