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双五次B-样条曲面的G~2连续条件
G~2 CONTINUOS CONDITIONS OF BIQUINTIC B-SPLINE SURFACES
【摘要】 <正> 引言 Coons曲面,B6zier曲面和B一样条(包括NURBs)曲面等参数曲面的构造是几何造型和CAD/CAM领域的基础问题.B一样条曲面由于它的局部支集和全局逼近性质已成为这些领域最为常用的几何表示方法.特别是近年来反向工程的发展,使得B一样条的研究越发受到重视.反向工程的关键问题之一是复杂曲面的重建,但是目
【Abstract】 Some practical problems in designing the outline of hidden airplane require to construct high-order surfaces with at least second order continuity. The high-order smooth surfaces’construction has been always a difficult problem in CAGD. In this paper, G2smoothness between two biquintic surface patches is discussed, and the intrinsic conditions of the control vectors of the common boundary curve are presented.
【关键词】 B-spline surface patches;
Geometric continuity;
Instinct conditions of boundary control points.;
【Key words】 B-spline surface patches; Geometric continuity; Instinct conditions of boundary control points.;
【Key words】 B-spline surface patches; Geometric continuity; Instinct conditions of boundary control points.;
【基金】 国家“九七三”项目(G19980306007);教育部博士点基金(199014115);教育部优秀青年教师基金;教育部青年骨干教师基金资助项目
- 【文献出处】 数值计算与计算机应用 ,Journal of Numerical Methods and Computer Applications , 编辑部邮箱 ,2004年01期
- 【分类号】TP391.72
- 【被引频次】4
- 【下载频次】106