Variational Modeling of Free-form Curve and Surface Using Wavelet Basis Functions
Variational Modeling of Free-form Curve and Surface Using Wavelet Basis Functions作者机构:School of Mechanical Eng.&Auto.Beijing University of Aeronautics&AstronauticsBeijing 100083China
出 版 物:《Computer Aided Drafting,Design and Manufacturing》 (计算机辅助绘图设计与制造(英文版))
年 卷 期:2000年第10卷第2期
页 面:10-18页
学科分类:081203[工学-计算机应用技术] 08[工学] 0835[工学-软件工程] 0812[工学-计算机科学与技术(可授工学、理学学位)]
主 题:wavelet variational modeling quasi-uniform B-spli?
摘 要:Variational modeling approach is often used to interactively design free-form curves and surfaces. Traditionally, a variational problem can be transformed to the optimization of control points. Unfortunately, as the number of basis functions grows, the local support property of B-spline often makes the computation of an optimization system time-consuming. To solve this problem, wavelet basis instead of B-spline basis is used to represent the curves or surfaces. Because the wavelet basis is a hierarchical basis with multiresolution property, the coarse wavelet basis can be used to describe the overall shape of the curves/surfaces, while the finer wavelet basis used to describe the details of the curves/surfaces. Thus, the computing speed of the optimization system can be raised greatly.