Phase mutual information as a similarity measure for registration

被引:124
作者
Mellor, M [1 ]
Brady, M [1 ]
机构
[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England
基金
英国医学研究理事会; 英国工程与自然科学研究理事会;
关键词
multimodal registration; non-rigid registration; local phase; mutual information;
D O I
10.1016/j.media.2005.01.002
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
This article describes a new method for non-rigid alignment of multimodal images. Multimodal image registration is most often accomplished by modelling, in some sense, an intensity mapping between the images. Here, the alternative strategy of modelling a relationship between local image phase is introduced. This method is intrinsically image feature based, and searches for relationships between feature appearances, rather than tissue class intensity. This enables registration of modalities for which image intensity is not a simple function of tissue class, for example ultrasound. It is also demonstrated that this method performs comparably to an intensity method even when the images are related by a simple intensity transform, but that the phase method is significantly more robust to image artifacts which corrupt the ideal intensity mapping. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:330 / 343
页数:14
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