ICP Optimized B-Spline Non-Rigid Registration for 4D-CT Images

doi:10.16182/j.issn1004731x.joss.19-VR0436

Abstract

Abstract: In order to improve the accuracy and speed of registration between two groups of 4D-CT images under different physiological activities, based on FFD model of multi-resolution B-spline, a registration algorithm using ICP to optimize the model is proposed. The ICP algorithm is added before the traditional b-spline to realize the point cloud registration between two groups of 4D-CT images: the appropriate model is generated from the two segmented groups of 4D-CT images, then the two groups of point clouds in the model are registered with ICP. The improvement rates of similarity measurement at level 1, level 2 and level 3 are 8.68%, 10.46% and 2.39% respectively, and the speed improvement rates are -51.89%, 41.71%, 81.09% respectively.

Key words: ICP, B-spline, Non-rigid registration, CT images

CLC Number:

TP391.41

Tang Wenjie, Li Ruotong, Deng Xuesong, Si Weixin, Wang Qiong. ICP Optimized B-Spline Non-Rigid Registration for 4D-CT Images[J]. Journal of System Simulation, 2020, 32(7): 1301-1311.

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