基于JS测度和层次B样条的医学图像弹性配准  

Elastic medical image registration based on JS measure and multilevel B-spline approxmation

作　　者：胡顺波[1] 刘常春[2] 杨金宝[2] 

机构地区：[1]临沂师范学院物理系,山东临沂276005 [2]山东大学控制科学与工程学院,山东济南250061

出　　处：《光电子．激光》2009年第2期269-273,共5页Journal of Optoelectronics·Laser

基　　金：国家"863"计划资助项目(2006AA02Z4D9)

摘　　要：为了精确得到图像的不规则局部几何变形,提出了一种基于标记点的医学图像弹性配准新方法。首先用Jensen-Schur(JS)测度对图像进行粗配准,然后用该测度自动选取标记点对,最后用能够解决逼近精度和光滑性平衡问题的B样条细化的层次B样条插值技术来实现图像弹性配准。实验表明,本文提出的标记点自动选取方法能够产生准确的表示不规则局部变形的标记点对,所提出的配准方法能够产生光滑、准确的弹性配准变换。In order to obtain the local irregular geometric deformation of registering medical image precisely,a new elastic registration method based on landmark points is proposed.Firstly Jensen-Schur measure is used to coarsely align two images,and then used to automatically get exact landmark points.At last the accurate elastic registration is achieved by multilevel B-spline approximation algorithm with B-spline refinement optimization,which can balance the approximation precision and smoothness.Experimental resul...

关 键 词：图像处理技术 弹性配准 Jensen-Schur(JS)测度 层次B样条细化 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]