A study on medical image registration by mutual information with pyramid data structure

被引：16
|
作者：
Xu, Peng [1 ]
Yao, DeZhong [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Life Sci & Technol, Chengdu 610054, Peoples R China
来源：
COMPUTERS IN BIOLOGY AND MEDICINE | 2007年 / 37卷 / 03期
关键词：
image registration; mutual information; wavelet pyramid; slice accumulation pyramid;
D O I：
10.1016/j.compbiomed.2006.02.005
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The registration method based on mutual information is currently a popular technique for medical image registration, but the computation of the mutual information is complex and the registration speed is slow. In this work, a new slice accumulation pyramid (SAP) data structure was proposed to expedite the registration process. A numerical comparative study between the new data structure and the existing wavelet pyramid (WP) data structure was given, and the results confirmed that the new pyramid data structure was superior to the WP in both the calculation efficiency and the optimizing performance. Finally, SAP was applied to remove the artifacts between CT and MRI data sets, and the results showed the validation of SAP to registration of mulmodality images. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：320 / 327
页数：8
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