基于互信息量和薄板样条的X射线造影图像弹性配准  

Elastic X-Ray Image Registration Based on Mutual Information and Thin-Plate Spline

作　　者：杨健[1] 王涌天[1] 唐宋元[1] 周寿军[1] 刘越[1] 

机构地区：[1]北京理工大学信息科学技术学院,北京100081

出　　处：《电子学报》2007年第1期127-130,共4页Acta Electronica Sinica

基　　金：国家973重点基础研究发展规划(No.2003CB716105)

摘　　要：本文提出了一种基于互信息量和薄板样条的冠状动脉造影图像弹性配准新方法.该方法不仅解决了传统模板匹配方法中子块图像分解的不确定性问题,而且还克服了常规优化方法易受初值影响而陷入局部最优的问题,有效的保证了解的收敛.试验结果证明本算法能够获得亚像素的配准精度.A novel technique based on mutual information and thin-plate spline is proposed for the registration of coronary angiography images. This method not only resolves the uncertain problem of the calculating block size of traditional template matching method, but also removes the bad influence of the starting point of the optimization and insures to find global minimum. Experimental results show that the proposed method is able to achieve sub-pixel registration precision.

关 键 词：弹性配准 血管造影术 互信息量 薄板样条 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]