| 摘要: |
| 人们通常用有理三次曲线样条来构造整体曲率连续的曲线.提出利用有理二次样条曲线插值整体曲率连续的曲线的一种方法.首先导出了两相邻二次曲线段间曲率连续的拼接条件,然后提出了求解平面上一个闭的点列中每一点处的切线的最优算法.最后给出了闭曲线插值的一些实例以检验方法的有效性. |
| 关键词: 有理二次曲线 曲率连续 样条插值 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(60073026,19971079);国家重点基础研究发展规划973资助项目(G1998030600) |
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| An Optimal Method for Interpolating Curvature Continuity Curves with Rational Quadratic Splines |
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ZHANG San yuan,WANG Guo zhao
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| Abstract: |
| As for curvature continuity curves, they are usually constructed by means of rational cubic curves. A method for interpolating global curvature continuity curves with conic segments is presented in this paper. Firstly, the curvature continuity conditions between two adjacent rational quadratic curve segments are derived. Secondly, an optimal algorithm is presented for solving out the tangent lines at every points of a closed point set in a plane. Finally, several examples are given out to illustrate the effectiveness of this method. |
| Key words: rational quadratic curve curvature continuity spline interpolation |
