Fitting Sharp Features with Loop Subdivision Surfaces

CASIA OpenIR > 09年以前成果

	Fitting Sharp Features with Loop Subdivision Surfaces
	Ling, Ruotian; Wang, Wenping; Yan, Dong-Ming
发表期刊	Computer Graphics Forum
	2008
卷号	27 期号:5 页码:1383-1391
摘要	Various methods have been proposed for fitting subdivision surfaces to different forms of shape data (e.g., dense meshes or point clouds), but none of these methods effectively deals with shapes with sharp features, that is, creases, darts and corners. We present an effective method for fitting a Loop subdivision surface to a dense triangle mesh with sharp features. Our contribution is a new exact evaluation scheme for the Loop subdivision with all types of sharp features, which enables us to compute a fitting Loop subdivision surface for shapes with sharp features in an optimization framework. With an initial control mesh obtained from simplifying the input dense mesh using QEM, our fitting algorithm employs an iterative method to solve a nonlinear least squares problem based on the squared distances from the input mesh vertices to the fitting subdivision surface. This optimization framework depends critically on the ability to express these distances as quadratic functions of control mesh vertices using our exact evaluation scheme near sharp features. Experimental results are presented to demonstrate the effectiveness of the method. ; Various methods have been proposed for fitting subdivision surfaces to different forms of shape data (e.g., dense meshes or point clouds), but none of these methods effectively deals with shapes with sharp features, that is, creases, darts and corners. We present an effective method for fitting a Loop subdivision surface to a dense triangle mesh with sharp features. Our contribution is a new exact evaluation scheme for the Loop subdivision with all types of sharp features, which enables us to compute a fitting Loop subdivision surface for shapes with sharp features in an optimization framework. With an initial control mesh obtained from simplifying the input dense mesh using QEM, our fitting algorithm employs an iterative method to solve a nonlinear least squares problem based on the squared distances from the input mesh vertices to the fitting subdivision surface. This optimization framework depends critically on the ability to express these distances as quadratic functions of control mesh vertices using our exact evaluation scheme near sharp features. Experimental results are presented to demonstrate the effectiveness of the method.
关键词	Fitting
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/14021
专题	09年以前成果
推荐引用方式 GB/T 7714	Ling, Ruotian,Wang, Wenping,Yan, Dong-Ming. Fitting Sharp Features with Loop Subdivision Surfaces[J]. Computer Graphics Forum,2008,27(5):1383-1391.
APA	Ling, Ruotian,Wang, Wenping,&Yan, Dong-Ming.(2008).Fitting Sharp Features with Loop Subdivision Surfaces.Computer Graphics Forum,27(5),1383-1391.
MLA	Ling, Ruotian,et al."Fitting Sharp Features with Loop Subdivision Surfaces".Computer Graphics Forum 27.5(2008):1383-1391.

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