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Proceedings Paper

Recognizing Planar Objects in 3-D Space
Author(s): Nirwan Ansari; Edward J. Delp
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Paper Abstract

Object recognition is a major theme in computer vision. In this paper, we present a method of recognizing planar objects in 3-D space from a single image. Objects in a scene may be occluded, and the orientation of the objects is arbitrary. We represent each object by its dominant points, and pose the recognition problem as a dominant-point matching problem. We introduce a measure, known as sphericity, derived from an affine transform to indicate the quality of match among dominant points. A clustering algorithm, probe-and-block, is used to guide the matching. We use a least squares fit among dominant points to estimate object location in the scene. A heuristic measure is finally computed to verify the match.

Paper Details

Date Published: 1 February 1990
PDF: 12 pages
Proc. SPIE 1197, Automated Inspection and High-Speed Vision Architectures III, (1 February 1990);
Show Author Affiliations
Nirwan Ansari, New Jersey Institute of Technology (United States)
Edward J. Delp, Purdue University (United States)

Published in SPIE Proceedings Vol. 1197:
Automated Inspection and High-Speed Vision Architectures III
Michael J. W. Chen, Editor(s)

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