| 水平集演化中的奇点与改进的窄带算法 |
| |
| 引用本文： | 于洪川,王德军,唐泽圣,唐龙.水平集演化中的奇点与改进的窄带算法[J].软件学报,2003,14(4):811-817. |
| |
| 作者姓名： | 于洪川 王德军 唐泽圣 唐龙 |
| |
| 作者单位： | 清华大学,计算机科学与技术系,计算机软件研究所,北京,100084 |
| |
| 基金项目： | Supported by the Combined Foundation of the National Natural Science Foundation of China and the Research Grants Council of Hong Kong of China under Grant No.6001161942 (国家自然科学基金委员会与香港研究资助局联合资助项目) |
| |
| 摘 要： | 对保持距离函数约束的水平集演化过程作了系统的分析,提出了奇点的概念,并给出了奇点的重要性质及其证明,详细分析了奇点在水平集演化过程中的数值影响.在此基础上对窄带算法作了改进,以避免奇点的不良影响,同时窄带宽度具有自适应性.实验结果表明,改进的窄带算法具有较好的鲁棒性.
|
| 关 键 词： | 水平集方法 奇点 窄带算法 窄带宽度 |
| 收稿时间： | 2001/7/25 0:00:00 |
| 修稿时间： | 2001年7月25日 |
Singular Points in Level Set Evolution and Revised Narrow Banding Algorithm |
| |
| YU Hong-Chuan,WANG De-Jun,TANG Ze-Sheng and TANG Long.Singular Points in Level Set Evolution and Revised Narrow Banding Algorithm[J].Journal of Software,2003,14(4):811-817. |
| |
| Authors: | YU Hong-Chuan WANG De-Jun TANG Ze-Sheng and TANG Long |
| |
| Abstract: | In this paper, the process of level set evolution with distance function restriction is analyzed in detail. The concept of singular point is put forward, its important property is proposed and proved, and its influence to the level set evolution is analyzed. Based upon these results, the narrow banding algorithm is revised in order to avoid the singular points during evolutions. And the narrow bandwidth can be modified adaptively in the revised narrow banding algorithm. The experimental results indicate that the revised narrow banding algorithm is robust. |
| |
| Keywords: | level set method singular point narrow banding algorithm narrow bandwidth |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《软件学报》浏览原始摘要信息 |
|
点击此处可从《软件学报》下载全文 |
|
