Weingarten surface approximation by curvature diagram transformation

IF 1.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING
Fei Huang , Caigui Jiang , Yong-Liang Yang
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Abstract

Weingarten surfaces are characterized by a functional relation between their principal curvatures. Such a specialty makes them suitable for building surface paneling in architectural applications, as the curvature relation implies approximate local congruence on the surface thus the molds for paneling can be largely reused. In this work, we aim at a novel task of Weingarten surface approximation. Given a surface mesh with arbitrary topology, we optimize its shape to make it as Weingarten as possible. We devise a curvature-based optimization approach based on the fact that the 2D principal curvature plots of a Weingarten surface comprise a group of 1D curves that encode the curvature relations. Our approach alternatively performs two steps. The first step transforms the principal curvature plots from a 2D region to 1D curves in order to explore the curvature relations. The second step deforms the shape such that its curvatures conform to the corresponding transformed curvature plots. We demonstrate the effectiveness of our work on a variety of shapes with different topologies. Hopefully our work would bring inspiration on the study of general Weingarten surfaces with arbitrary topology and curvature relation.
曲率图变换的维因加滕曲面近似
温加滕曲面的特征是其主曲率之间的函数关系。这种特性使它们适合于建筑应用中的建筑表面镶板,因为曲率关系意味着表面上的近似局部同余,因此镶板模具可以大量重复使用。在这项工作中,我们的目标是一个新的任务Weingarten曲面逼近。给定一个具有任意拓扑结构的表面网格,我们优化其形状以使其尽可能符合Weingarten。基于Weingarten曲面的二维主曲率图由一组编码曲率关系的一维曲线组成这一事实,我们设计了一种基于曲率的优化方法。我们的方法执行两个步骤。第一步将主曲率图从二维区域转换为一维曲线,以探索曲率关系。第二步对形状进行变形,使其曲率符合相应的变换曲率图。我们展示了我们在具有不同拓扑的各种形状上的工作的有效性。希望我们的工作能对具有任意拓扑和曲率关系的一般Weingarten曲面的研究带来启示。
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来源期刊
Computer Aided Geometric Design
Computer Aided Geometric Design 工程技术-计算机:软件工程
CiteScore
3.50
自引率
13.30%
发文量
57
审稿时长
60 days
期刊介绍: The journal Computer Aided Geometric Design is for researchers, scholars, and software developers dealing with mathematical and computational methods for the description of geometric objects as they arise in areas ranging from CAD/CAM to robotics and scientific visualization. The journal publishes original research papers, survey papers and with quick editorial decisions short communications of at most 3 pages. The primary objects of interest are curves, surfaces, and volumes such as splines (NURBS), meshes, subdivision surfaces as well as algorithms to generate, analyze, and manipulate them. This journal will report on new developments in CAGD and its applications, including but not restricted to the following: -Mathematical and Geometric Foundations- Curve, Surface, and Volume generation- CAGD applications in Numerical Analysis, Computational Geometry, Computer Graphics, or Computer Vision- Industrial, medical, and scientific applications. The aim is to collect and disseminate information on computer aided design in one journal. To provide the user community with methods and algorithms for representing curves and surfaces. To illustrate computer aided geometric design by means of interesting applications. To combine curve and surface methods with computer graphics. To explain scientific phenomena by means of computer graphics. To concentrate on the interaction between theory and application. To expose unsolved problems of the practice. To develop new methods in computer aided geometry.
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