计算机工程与应用 ›› 2013, Vol. 49 ›› Issue (10): 195-200.

• 图形图像处理 • 上一篇    下一篇

一种类四次三角样条曲线的奇拐点分析

刘朝霞1,喻德生1,曾接贤2   

  1. 1.南昌航空大学 数学与信息科学学院,南昌 330063
    2.南昌航空大学 软件学院,南昌 330063
  • 出版日期:2013-05-15 发布日期:2013-05-14

Analysis of inflection and singular points on a class of quasi quartic trigonometric spline curves

LIU Chaoxia1, YU Desheng1, ZENG Jiexian2   

  1. 1.School of Mathematics and Information Sciences, Nanchang Hangkong University, Nanchang 330063, China
    2.School of Software, Nanchang Hangkong University, Nanchang 330063, China
  • Online:2013-05-15 Published:2013-05-14

摘要: 根据移动一个控制顶点而固定其他控制顶点的方法, 分析一种类四次三角样条曲线的形状。在一类控制多边形下,利用控制顶点之间距离的关系,分别得到了对应的四次三角样条曲线含有尖点、二重点以及拐点的判别条件。

关键词: 三角样条曲线, 奇点, 拐点

Abstract: By varying a control point and fixing the rest, the shapes of a class of quasi quartic trigonometric spline curve lying to a kind of control polygons are studied. The discriminate conditions of cups, loops and inflection points are obtained according to the distance of the control points respectively.

Key words: trigonometric spline curves, singularity point, inflection point