哈尔滨工业大学学报（英文版）2007，Vol.14Issue(2)：252-258,7.
A MNCIE method for registration of ultrasound images
A MNCIE method for registration of ultrasound images
JIN Jing 1WANG Qiang 1SHEN Yi1
作者信息
- 1. Dept. of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
- 折叠
摘要
Abstract
A new approach to the problem of registration of ultrasound images is presented, using a concept of Nonlinear Correlation Information Entropy (NCIE) as the matching criterion. The proposed method applies NCIE to measure the correlation degree between the image intensities of corresponding voxel in the floating and reference images. Registration is achieved by adjustment of the relative position until NCIE between the images is maximized. However, unlike mutual information (MI), NCIE varies in the closed interval [0, 1 ], and around the extremum it varies sharply, which makes it possible that thresholds of NCIE can be used to boost the search for the registration transformation. Using this feature of NCIE, we combine the downhill simplex searching algorithm to register the ultrasound images. The simulations are conducted to testify the effectiveness and rapidity of the proposed registration method, in which the ultrasound floating images are aligned to the reference images with required registration accuracy. Moreover, the NCIE based method can overcome local minima problem by setting thresholds and can take care of the differences in contrast between the floating and reference images.关键词
image registration/nonlinear correlation information entropy/mutual information/downhill simplexKey words
image registration/nonlinear correlation information entropy/mutual information/downhill simplex分类
信息技术与安全科学引用本文复制引用
JIN Jing,WANG Qiang,SHEN Yi..A MNCIE method for registration of ultrasound images[J].哈尔滨工业大学学报（英文版）,2007,14(2):252-258,7.
