The constraints on images of rectangular polyhedra
IEEE Transactions on Pattern Analysis and Machine Intelligence
Machine interpretation of line drawings
Machine interpretation of line drawings
Nonoverlap of the star unfolding
SCG '91 Proceedings of the seventh annual symposium on Computational geometry
Decomposition of a visual scene into three-dimensional bodies
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A Necessary and Sufficient Condition for a Picture to Represent a Polyhedral Scene
IEEE Transactions on Pattern Analysis and Machine Intelligence
IEEE Transactions on Pattern Analysis and Machine Intelligence
Geometric Methods for Shape Recovery from Line Drawings of Polyhedra
Journal of Mathematical Imaging and Vision
Computer-Aided Creation of Impossible Objects and Impossible Motions
Computational Geometry and Graph Theory
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Computer-Aided Design
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Computational Geometry: Theory and Applications
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Anomalous pictures are naively regarded as pictures of impossible objects, but some of them are realizable as three-dimensional polyhedral objects. This paper presents an interactive system for generating the unfolded surfaces of those objects, thus offering toy material from which children can make ''impossible objects''.