Application of M-estimation in medical images registration

doi:10.3778/j.issn.1002-8331.2009.14.063

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (14): 204-206.DOI: 10.3778/j.issn.1002-8331.2009.14.063

• 工程与应用 • Previous Articles Next Articles

Application of M-estimation in medical images registration

XIN Xue-gang,LU Zhen-tai,CHEN Wu-fan

School of Biomedical Engineering，Southern Medical University，Guangzhou 510515，China

Received:2008-03-17 Revised:2008-05-19 Online:2009-05-11 Published:2009-05-11
Contact: XIN Xue-gang

M估计在医学图像配准中的应用

辛学刚,卢振泰,陈武凡

南方医科大学生物医学工程学院，广州 510515

通讯作者: 辛学刚

Abstract

Abstract: Rigid image registration or matching is a difficult problem in image processing filed.Noise and outlines can play havoc with conventional least-squares estimation，this paper presents a new alignment algorithm relies on M-estimation，which automatically ignores pixel where the intensities are sufficiently different in the two images.A multi-resolution pyramid implementation enables the algorithm to estimate large displacements.Experimental results show robustness and effectiveness of this method.

Key words: M-estimation, image registration, least squares, multi-resolution

摘要： 图像的刚性配准或者匹配是图像处理中的热点和难点问题。由于图像的不连续性和成像设置中噪声的影响，传统的最小二乘方法（Least Squares Method）不能很好地解决这一难题。采用M估计算子（M-estimation operator）代替最小二乘算子，并结合由粗到精的多分辨率策略，提出了一种新的基于M估计的医学图像多分辨率配准算法，实验结果表明该方法对配准的速度、精度及鲁棒性都有很大的提高。

关键词: M估计, 图像配准, 最小二乘, 多分辨率

XIN Xue-gang,LU Zhen-tai,CHEN Wu-fan. Application of M-estimation in medical images registration[J]. Computer Engineering and Applications, 2009, 45(14): 204-206.

辛学刚,卢振泰,陈武凡. M估计在医学图像配准中的应用[J]. 计算机工程与应用, 2009, 45(14): 204-206.

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Application of M-estimation in medical images registration

M估计在医学图像配准中的应用

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