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An Occlusion-Based Representation of Shape for Viewpoint Recovery
W. B. Seales and C. R. Dyer,
Proc. 10th European Conf. on Artificial Intelligence, 1992, 816-820.
In this paper we present the geometry and the algorithms for organizing and using a viewer-centered representation of the occluding contour of polyhedra. The representation is computed from a polyhedral model under orthographic projection for all viewing directions. Using this representation, we derive constraints on viewpoint correspondences between image features and model contours. Our results show that the occluding contour, computed in a model-based framework, can be used to strongly constrain the viewpoints where a 3D model matches the occluding contour features of the image.