Visual hull surface estimation

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2004

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http://hdl.handle.net/11427/24242
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Milne_Proceedings_2004.pdf (762.18 KB)
Authors
Milne, Phillip
Nicolls, Fred
De Jager, Gerhard
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University of Cape Town

Department
Department of Electrical Engineering
Faculty
Faculty of Engineering and the Built Environment
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Abstract
This paper describes a technique used to approximate the surface of an object’s visual hull. The hull’s basic structure is initially represented by a partitioned 3D space using voxels. The marching cubes algorithm then assigns polygonal patches to surface voxels depending on a certain criteria. It is less computationally intensive to manipulate a few triangular patches than a number of six-faced voxels. The visual hull model is further refined by applying a binary search to the vertices of each surface that improves the positional accuracy of each vertex. The method is applied to a small plastic cat using a 5-camera system and results are shown.
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Reference:

Milne, P., Nicolls, F., & de Jager, G. (2004). Visual hull surface estimation. PRASA2004, 13-18.

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