J Shanghai Jiaotong Univ Sci ›› 2022, Vol. 27 ›› Issue (4): 452-462.doi: 10.1007/s12204-022-2428-3

• Medicine-Engineering Interdisciplinary Research • Previous Articles     Next Articles

Deformable Registration Algorithm via Non-subsampled Contourlet Transform and Saliency Map

CHANG Qing∗ (常 青), YANG Wenyou (杨文友), CHEN Lanlan (陈兰岚)   

  1. (School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China)
  • Received:2020-12-30 Online:2022-07-28 Published:2022-08-11

Abstract: Medical image registration is widely used in image-guided therapy and image-guided surgery to esti- mate spatial correspondence between planning and treatment images. However, most methods based on intensity have the problems of matching ambiguity and ignoring the influence of weak correspondence areas on the overall registration. In this study, we propose a novel general-purpose registration algorithm based on free-form defor- mation by non-subsampled contourlet transform and saliency map, which can reduce the matching ambiguities and maintain the topological structure of weak correspondence areas. An optimization method based on Markov random fields is used to optimize the registration process. Experiments on four public datasets from brain, car- diac, and lung have demonstrated the general applicability and the accuracy of our algorithm compared with two state-of-the-art methods.

Key words: medical image registration, non-subsampled contourlet transform, saliency map, Markov random fields

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