| 实现测地线活动轮廓模型的改进变分水平集方法 |
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| 引用本文： | 张玲艳,闫丽,陈颖,张欢.实现测地线活动轮廓模型的改进变分水平集方法[J].计算机工程与应用,2009,45(16):188-189. |
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| 作者姓名： | 张玲艳 闫丽 陈颖 张欢 |
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| 作者单位： | 西北大学,电子信息科学与技术学院,西安,710127 |
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| 摘 要： | 传统的实现测地线活动轮廓(Geodesic Active Contour,GAC)模型的水平集方法中,采用迎风方案作数值求解,需要使用足够小的时间步长,在曲线演化的过程中需要重新初始化,故效率低,据此,给出一种基于测地线活动轮廓模型的变分水平集方法,引入了一个水平集函数的强制项,避免了重新初始化,简化了初始化的工作,通过实验证明了这种方法是有效的,稳定的。
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| 关 键 词： | 测地线活动轮廓模型 变分水平集方法 曲线演化 |
| 收稿时间： | 2008-4-2 |
| 修稿时间： | 2008-5-30
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Variational level set method based on geodesic active contour |
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| ZHANG Ling-yan,YAN Li,CHEN Ying,ZHANG Huan.Variational level set method based on geodesic active contour[J].Computer Engineering and Applications,2009,45(16):188-189. |
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| Authors: | ZHANG Ling-yan YAN Li CHEN Ying ZHANG Huan |
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| Affiliation: | ZHANG Ling-yan,YAN Li,CHEN Ying,ZHANG Huan College of Information Science , Technology,Northwest University,Xi'an 710127,China |
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| Abstract: | In the classical level set method of implementing geodesic active contours model,upwind scheme is adopted.It needs small time step and re-initialization for every few iterations,so it is inefficient.Accordingly,this paper introduces a variational level set method based on geodesic active contours.Through introducing an enforcement for level set function,re-initialization is never needed.By experiment,the result shows that this method is effective and stable. |
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| Keywords: | Geodesic Active Contour（GAC） variational level set method curve evolution |
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