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发布时间：2019-03-13

论文类型：期刊论文

发表时间：2016-06-01

发表刊物：FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING

收录刊物：Scopus、EI、SCIE

卷号：17

期号：6

页面范围：501-515

ISSN号：2095-9184

关键字：Mesh parameterization; Convex combination weights; Stretch operator; Jacobian matrix

摘要：Mesh parameterization is one of the fundamental operations in computer graphics (CG) and computeraided design (CAD). In this paper, we propose a novel local/global parameterization approach, ARAP++, for single-and multi-boundary triangular meshes. It is an extension of the as-rigid-as-possible (ARAP) approach, which stitches together 1-ring patches instead of individual triangles. To optimize the spring energy, we introduce a linear iterative scheme which employs convex combination weights and a fitting Jacobian matrix corresponding to a prescribed family of transformations. Our algorithm is simple, efficient, and robust. The geometric properties (angle and area) of the original model can also be preserved by appropriately prescribing the singular values of the fitting matrix. To reduce the area and stretch distortions for high-curvature models, a stretch operator is introduced. Numerical results demonstrate that ARAP++ outperforms several state-of-the-art methods in terms of controlling the distortions of angle, area, and stretch. Furthermore, it achieves a better visualization performance for several applications, such as texture mapping and surface remeshing.