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The enumerative geometry of projective algebraic surfaces and the complexity of aspect graphs

The enumerative geometry of projective algebraic surfaces and the complexity of aspect graphs Abstract The aspect graph is a popular viewer-centered representation that enumerates all the topologically distinct views of an object. Building the aspect graph requires partitioning viewpoint space in view-equivalent cells by a certain number of visual event surfaces. If the object is piecewise-smooth algebraic, then all visual event surfaces are either made of lines having specified contacts with the object or made of lines supporting the points of contacts of planes having specified contacts with the object. In this paper, we present a general framework for studying the enumerative properties of line and plane systems. The context is that of enumerative geometry and intersection theory. In particular, we give exact results for the degrees of all visual event surfaces coming up in the construction of aspect graphs of piecewise-smooth algebraic bodies. We conclude by giving a bound on the number of topologically distinet views of such objects. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Computer Vision Springer Journals

The enumerative geometry of projective algebraic surfaces and the complexity of aspect graphs

International Journal of Computer Vision , Volume 19 (3): 27 – Aug 1, 1996

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References (37)

Publisher
Springer Journals
Copyright
1996 Kluwer Academic Publishers
ISSN
0920-5691
eISSN
1573-1405
DOI
10.1007/BF00055147
Publisher site
See Article on Publisher Site

Abstract

Abstract The aspect graph is a popular viewer-centered representation that enumerates all the topologically distinct views of an object. Building the aspect graph requires partitioning viewpoint space in view-equivalent cells by a certain number of visual event surfaces. If the object is piecewise-smooth algebraic, then all visual event surfaces are either made of lines having specified contacts with the object or made of lines supporting the points of contacts of planes having specified contacts with the object. In this paper, we present a general framework for studying the enumerative properties of line and plane systems. The context is that of enumerative geometry and intersection theory. In particular, we give exact results for the degrees of all visual event surfaces coming up in the construction of aspect graphs of piecewise-smooth algebraic bodies. We conclude by giving a bound on the number of topologically distinet views of such objects.

Journal

International Journal of Computer VisionSpringer Journals

Published: Aug 1, 1996

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