Safe polyhedral visual hulls

Authors:
Guojun Chen;Huanhuan Su;Jie Jiang;Wei Wu
Affiliations:
College of Computer and Communication Engineering, China University of Petroleum, Dongying, China;College of Computer and Communication Engineering, China University of Petroleum, Dongying, China;College of Computer and Communication Engineering, China University of Petroleum, Dongying, China;State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing, China
Venue:
MMM'10 Proceedings of the 16th international conference on Advances in Multimedia Modeling
Year:
2010

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Abstract

The visual hull is used to 3D object modeling in real-time. In this paper, we propose a novel method to remove phantom volumes produced in the polyhedral visual hull (PVH) construction. This method calculates the visual hull by using polygon intersection. By making full use of the information PVH supplied for image planes, we finally obtain the safe polyhedral visual hull (SPVH). Unlike the method based image method, according to the construction process of the PVH, this paper presents a fast ray-volume intersection based on geometry method. Experiment results show that, without adding more cameras, this method can provide view-independent SPVH model with phantom volumes removed, which can be used in the 3D modeling and interactive system.