首页 | 本学科首页   官方微博 | 高级检索  
     

基于Level Set方法的曲线演化
引用本文:杨猛,汪国平,董士海. 基于Level Set方法的曲线演化[J]. 软件学报, 2002, 13(9): 1858-1865
作者姓名:杨猛  汪国平  董士海
作者单位:中国科学院,计算技术研究所,智能信息处理开放实验室,北京,100080;北京大学,计算机科学技术系,北京,100871
基金项目:国家自然科学基金资助项目(60173016);国家高技术研究发展计划资助项目(2001AA115126);国家教育部骨干教师基金资助项目;北京市自然科学基金资助项目(4012008)
摘    要:Level Set方法是一种描述曲线以曲率相关的速度演化的有力工具,最近几年在医学图像处理、自然现象的模拟以及计算机视觉等领域得到了广泛的应用.其中,曲线演化后的平滑算法和轮廓跟踪方法是Level Set方法实际应用中的两个关键算法.给出了一种平滑Level Set距离函数的简单方法.该方法只采用内插值的方式,消除平面上的全部孤立点以及部分可能产生歧义的点,在允许存在部分冗余点的情况下,利用曲线轮廓跟踪算法,得到平面上所有曲线的轮廓.经过实验验证,该方法简单、高效,适应范围广.

关 键 词:Level Set方法  曲线演化  医学图像处理  轮廓跟踪  基于图像的建模
文章编号:1000-9825/2002/13(09)1858-08
收稿时间:2002-02-28
修稿时间:2002-02-28

Curves Evolving Based on Level Set Method
YANG Meng,WANG Guo-ping and DONG Shi-hai. Curves Evolving Based on Level Set Method[J]. Journal of Software, 2002, 13(9): 1858-1865
Authors:YANG Meng  WANG Guo-ping  DONG Shi-hai
Abstract:Level Set method is a power tool for tracking the evolution of fronts propagating with curvature dependent speed. Since its introduction, Level Set method has been used in a wide collection of problems such as medical image processing, the simulation of natural phenomenon and computer vision. In practical applications, two of the most important algorithms are how to smooth the grid value and track the fronts contour after some time steps. In this paper, a simple method is introduced to smooth the value of Level Set function.It uses only intra-interpolation to clear out all of the single points and soms of the ambiguous points.Use the contor line tracking method introduced in this paper,people can get the contour lies of all of the curves in a plane,even if there exists some redundant points.The experimental results show that this method is simple and useful,and can be used to wide fields concerning with fronts propagating.
Keywords:Level Set method   curves evolving   medical image processing   contour tracking   image based modeling
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
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号