[1]陈伟卿,李冠华,欧宗瑛,等.基于灰度互信息和梯度相似性的医学图像配准及其加速处理[J].智能系统学报,2008,3(6):498-503.
CHEN Wei-qing,LI Guan-hua,OU Zong-ying,et al.Medical image registration based on grey mutual information and gradient similarity with an accelerated processing method[J].CAAI Transactions on Intelligent Systems,2008,3(6):498-503.
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《智能系统学报》[ISSN 1673-4785/CN 23-1538/TP] 卷:
3
期数:
2008年第6期
页码:
498-503
栏目:
学术论文—机器感知与模式识别
出版日期:
2008-12-25
- Title:
-
Medical image registration based on grey mutual information and gradient similarity with an accelerated processing method
- 文章编号:
-
1673-4785(2008)06-0498-06
- 作者:
-
陈伟卿1,李冠华1,欧宗瑛1,韩 军2
-
1.大连理工大学CAD & CG研究所,辽宁大连116024; 2. 大连现代高技术公司,辽宁大连116021
- Author(s):
-
CHEN Wei-qing1,LI Guan-hua1,OU Zong-ying1,HAN Jun2
-
1.CAD & CG Lab., Dalian University of Technology, Dalian 116024,China; 2.Dalian Modern HighTech Development Co.,Ltd.,Dalian 116021,China
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- 关键词:
-
医学图像配准; 互信息; 加速方法; 梯度相似性
- Keywords:
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medical image registration; mutual information; acceleration solutions; gradient similarity
- 分类号:
-
TP791.4
- 文献标志码:
-
A
- 摘要:
-
研究基于归一化互信息的医学图像刚性配准算法,提出改进配准速度和改善配准精度的相应措施.配准处理包含3项主要计算处理,即空间变换、互信息计算以及优化搜索.针对不同计算处理分别研究了相应加速策略,提高其计算速度,实现三维体数据的快速配准.并且,针对传统基于互信息测度配准方法未利用图像灰度空间分布信息,提出将灰度变化梯度相似性与互信息相结合的配准方法,从而进一步提高了配准算法的精度和鲁棒性.实验结果表明了算法的有效性.
- Abstract:
-
This paper presents new methods that have been developed for rigid registration of medical images. These methods are based on normalized mutual information and improve registration speed and precision. The whole registration process includes three main steps: space transformation, mutual information calculation, and optimal search. Some acceleration strategies for fast registration of 3D volume data were investigated. Conventional registration approaches, based on mutual information, neglect the spatial distribution information of images. In view of this drawback, a new method was developed, combining data based on gradient similarity and mutual information. This improves the precision and robustness of the registration algorithm. Experimental results proved the validity of the proposed methods.
更新日期/Last Update:
2009-04-03