一种B样条曲线描述图像边界的算法

计算机工程与应用 ›› 2016, Vol. 52 ›› Issue (3): 174-177.

一种B样条曲线描述图像边界的算法

沈惠芬，林意

江南大学数字媒体学院，江苏无锡 214000

出版日期:2016-02-01 发布日期:2016-02-03

Algorithm of B spline curve to describe image boundary

SHEN Huifen, LIN Yi

College of Digital Media, Jiangnan University, Wuxi, Jiangsu 214000, China

Online:2016-02-01 Published:2016-02-03

摘要/Abstract

摘要： 型值点的个数与分布对B样条曲线的形状有直接影响，为了让B样条曲线能很好地描述图像区域边缘，研究了一种自适应3次非均匀B样条曲线插值算法。利用B样条曲线在型值点处曲率较大的性质，调整型值点的位置和个数，通过B样条曲线与图像边缘的误差，对型值点进一步优化，使B样条曲线贴合边缘。实验结果表明，该方法得到的B样条曲线能很好地描述区域边缘。

关键词: 边界描述, 3次B样条, 插值误差

Abstract: Data points have a direct effect on the shape of B spline curve. In order to get the good result that B spline curve can describe the image edge better, this paper studies an adaptive 3 non uniform B spline curve interpolation algorithm. It adjusts point location and the number by using large curvature of the B spline curves in the type value points. Through the error of B spline curve and the image edge, it further optimizes the data points. The B spline curve fits edge. Experimental results show that, the B spline curve can describe the edge better.

Key words: boundary fitting, cubic B-spline, interpolation error

沈惠芬，林意. 一种B样条曲线描述图像边界的算法[J]. 计算机工程与应用, 2016, 52(3): 174-177.

SHEN Huifen, LIN Yi. Algorithm of B spline curve to describe image boundary[J]. Computer Engineering and Applications, 2016, 52(3): 174-177.

[1]	朱明，赵兴运. 分区最大化色域边界描述器的空区插值算法[J]. 计算机工程与应用, 2020, 56(8): 192-198.
[2]	叶铁丽，李学艺，曾庆良. 基于误差控制的自适应3次B样条曲线插值[J]. 计算机工程与应用, 2013, 49(1): 199-201.
[3]	张海员，蔡念，张楠. 基于加权抛物线插值误差补偿算法的图像放大[J]. 计算机工程与应用, 2011, 47(25): 194-197.