Mutual Information-Based Multimodal Non-Rigid Image Registration Using Free-Form Deformation with a New Joint Histogram Estimation

摘要：

In this paper, we present a voxel-based non-rigid registration algorithm using an improved interpolation method based on PV (partial volume) interpolation to estimate the joint histogram. Traditionally, the local deformation is modeled by a free-form deformation based on B-splines, and the cost function is the weighted combination of mutual information and a smooth constraint penalty term. In order to reduce the local extreme, we employ an approximate function of Hanning windowed sinc as kernel function of PV interpolation, and use a new method computing the gradient of mutual information with respect to the model parameters efficiently. The experiment on CT abdomen images shows that the algorithm is easier to converge at the global optimum and restrain the local extreme.

作者: Xuesong Lu Bo Ye Su Zhang Shengxian Tu Yazhu Chen Lei Chen

作者单位: Department of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R China The Sixth People Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R China

会议类型: 国际会议

会议名称: 2007 IEEE/ICME International Conference on Complex Medical Engineering-CME2007(CME2007 第二届国际复合医学工程学术大会)

会议地点: 北京

会议语种:英文

页码: 688-692

在线出版日期: 2007-05-23（万方平台首次上网日期，不代表论文的发表时间）