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A Novel Volumetric Shape from Silhouette Algorithm Based on a Centripetal Pentahedron Model

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4 Author(s)
Xin Liu ; Harbin Institute of Technology, China ; Hongxun Yao ; Guilin Yao ; Wen Gao

In this paper we present a novel volumetric shape from silhouette algorithm based on a centripetal pentahedron model. The algorithm first partitions the space with a set of infinite triangular pyramids derived from a geodesic sphere. Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull. This process is accelerated by pre-computed polar silhouette graphs (PSGs) and reduced PSGs. Finally a mesh surface model is extracted by marching pentahedrons. Our algorithm has the advantages of robustness, speediness and preciseness

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18th International Conference on Pattern Recognition (ICPR'06)  (Volume:1 )

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