设为首页 |  加入收藏
首页首页 期刊简介 消息通知 编委会 电子期刊 投稿须知 广告合作 联系我们
基于相对模糊连接度的联合主动轮廓模型及其在医学图像分割中的应用

Relative Fuzzy Connectedness-based United Active Contours Model and its Applications in Medical Image Segmentation

作者: 赖凯  刘军伟  范亚  黄煜峰  王兴家  冯焕清 
单位:中国科学技术大学电子科学与技术系(合肥230027)
关键词: 模糊连接度;主动轮廓模型;水平集;医学图像;分割 
分类号:
出版年·卷·期(页码):2010·29·6(581-586)
摘要:

针对医学图像背景复杂、边界模糊、局部不均匀等特点,提出了一种基于相对模糊连接度的联合主动轮廓模型,并将其应用于医学图像分割。首先介绍主动轮廓模型的曲线演化方程和模糊连接度的相关理论,然后将相对模糊连接度作为曲线演化驱动力引入曲线演化方程,最后用实验证明该方法对多目标医学图像和复杂医学图像的有效性。由于模糊连接度方法综合了局部信息和全局信息,因此可以克服Li方法容易陷入局部最优的问题和Chan-Vese方法不能越过局部伪边界的问题,从而使联合主动轮廓模型的演化曲线最终收敛于全局最优边界。

In order to solve the difficulties of complex background, fuzzy boundary, and uneven local part in the segmentation of medical images, an united active contours model based on relative fuzzy connectedness was proposed. First, the curve evolution equation of the active contours model and the related theories of the fuzzy connectedness were introduced in detail. Then, the relative fuzzy connectedness was introduced into the curve evolution equation as the driving force. Finally, comparative experiments showed the efficacies of the proposed method for multi-object medical images and complex medical images. Because the fuzzy connectedness combined the local information and global information, the proposed method overcome the problems of Li method for falling into local optimum boundary and Chan-Vese method unable to cross the local pseudo-boundary, and then the curve of the united active contours converged to the global optimum boundary.

参考文献:

[1]林瑶,田捷.医学图像分割方法综述[J].模式识别与人工智能,2002,15(2):192-204.
[2]Rosenfeld A.Fuzzy Digital Topology[J].Information and Control,1979,40:76-87.
[3]Udupa JK,Saha PK,Lotufo RA.Relative fuzzy connectedness and object definition: Theory, algorithm and applications in image segmentation[J].IEEE Trans on Pattern Analysis and Machine Intelligence,2002,24(11): 1485-1500.
[4]Pednekar A,Kakadiaris IA,Kurkure U.Adaptive fuzzy connectedness-based medical image segmentation[J].Proc Indian Conf. on Computer Vision, Graphics, and Image Processing,2003,24(11): 457-462.
[5]潘建江,杨勋年,汪国昭.基于模糊连接度的图像分割及算法[J].软件学报,2005,16(1): 67-76.
[6]周永新,白净.用于MRI脑组织分割的自动模糊连接方法[J].中国生物医学工程学报,2006,25(4):411-416.
[7]林瑶,田捷.基于模糊连接度的FCM分割方法在医学图像分析中的应用[J].中国体视学与图像分析,2001,6(2):103-108.
[8]李彬,陈武凡.基于模糊连接度的多发性硬化症MR图像自动分割算法[J].中国生物医学工程学报,2007,26(5):664-668.
[9]Kass M,Witkin A,Terzopoulos D.Snakes: Active contour models[J].International Journal of Computer Vision,1988,1(4):321-331.
[10]Li C,Xu C,Gui C,et al.Level set evolution without re-initialization: A new variational formulation[J].IEEE Conference on Computer Vision and Pattern Recognition,2005,1:430-436.
[11]Chan TF,Vese L.Active contours without edges[J].IEEE Transactions on Image Processing,2001,10(2):266-277.
[12] Zheng G,Wang HN,Li YL.A tree-like multiphase level set algorithm for image segmentation based on the Chan-Vese model[J].Acta Electronica Sinica,2006,34(8): 1508-1512.
 

服务与反馈:
文章下载】【加入收藏
提示:您还未登录,请登录!点此登录
 
友情链接  
地址:北京安定门外安贞医院内北京生物医学工程编辑部
电话:010-64456508  传真:010-64456661
电子邮箱:llbl910219@126.com