文献类型：期刊文献

英文题名：Reconstruction of shape and reflectance properties based on visual hull

作者：Zheng, Zuoyong[1]; Ma, Lizhuang[1]; Li, Zhong[2]; Chen, Zhihua[3,4]

机构：[1] Department of Computer Science, Shanghai Jiaotong University, China; [2] Department of Applied Mathematics, Zhejiang Sci.-Tech. University, China; [3] Department of Computer Science and Engineering, East China University of Science and Technology, China; [4] State Key Lab. of CAD and CG, Zhejiang University, China

年份：2009

起止页码：29

外文期刊名：Proceedings of Computer Graphics International Conference, CGI

收录：EI(收录号：20094612444380)

语种：英文

外文关键词：Mesh generation - Computer graphics - Nonlinear programming

摘要：A method based on Visual Hull is proposed for simultaneously recovering an object's shape and its reflectance properties from multiple images. Here, the reflectance properties are described by the Ward BRDF model. Firstly, the shape represented by voxels is acquired by applying SFS (Shape from Silhouettes) method, and the triangular mesh of the surface is extracted by Marching Cube algorithm. Secondly, the appearance-like mesh vertices are clustered into categories, and non-linear optimization is applied to each category for calculating its reflectance model parameters. Last, diffuse parameters for each vertex are re-computed. The acquired object shape and its reflectance parameters can be used for photo-realistic rendering. The experimental results on multiple real objects images show the efficiency of the proposed method. Copyright ? 2009 by the Association for Computing Machinery, Inc.