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More About Polyhedra-Interpretation Through Constructions in the Image Plane

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1 Author(s)
Ruth Shapira ; Cognitive Information Processing Group, Research Laboratory of Electronics, Massachusetts Institute of Technology, Caambridge, MA 02139; Rafael, Armament Development Authority, Haifa, Israel.

This paper deals with the interpretation and feasibility check of line drawings representing polyhedral scenes. The polyhedra are of general types and there are no restrictions on camera position. The geometric consistency check and the line labeling are carried out through constructions in the image plane. An algorithm for the geometric construction is suggested, and the necessary conditions for these constructions are discussed. The image plane construction can be used for preparing labeled junction catalogs for junctions other than trihedral. In addition the paper analyzes the relation between the image plane construction and the gradient space construction suggested by Mackworth [7] for the same purpose.

Published in:

IEEE Transactions on Pattern Analysis and Machine Intelligence  (Volume:PAMI-7 ,  Issue: 1 )