Non-Rigid Medical Image Registration with Joint Histogram Estimation Based on Mutual Information

被引：0
|
作者：
陆雪松
张素
苏和
陈亚珠
机构：
[1] China
[2] Department of Biomedical Engineering Shanghai Jiao Tong University
[3] Department of Biomedical Engineering Shanghai Jiao Tong University
[4] Shanghai 200030
来源：
Transactions of Tianjin University | 2007年 / 06期
关键词：
non-rigid registration; free-form deformation (FFD); Hanning windowed sinc; partial volume (PV) interpolation;
D O I：
暂无
中图分类号：
TP391.41 [];
学科分类号：
080203 ;
摘要：
A mutual information-based non-rigid medical image registration algorithm is presented. An approximate function of Hanning windowed sinc is used as kernel function of partial volume (PV) interpolation to estimate the joint histogram, which is the key to calculating the mutual information. And a new method is proposed to compute the gradient of mutual information with respect to the model parameters. The transformation of object is modeled by a free-form deformation (FFD) based on B-splines. The experiments on 3D synthetic and real image data show that the algorithm can converge at the global optimum and restrain the emergency of local extreme.
引用
收藏
页码：452 / 455
页数：4
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