Acta mathematica scientia,Series A ›› 2024, Vol. 44 ›› Issue (6): 1665-1688.

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Multi-Scale Approach for Diffeomorphic Image Registration with Fractional-Order Regularization Based on Quasiconformal Theory

Wang Huinan(),Han Huan*()   

  1. Department of Mathematics, Wuhan University of Technology, Wuhan 430070
  • Received:2023-10-18 Revised:2024-04-30 Online:2024-12-26 Published:2024-11-22
  • Supported by:
    National Natural Science Foundation of China(11901443);Natural Science Foundation of Hubei Province of China(2022CFB379)

Abstract:

Two significant challenges relating to image registration include the issue of mesh folding and the unresolved problem of greedy registration. To tackle these challenges, a multi-scale approach for diffeomorphic image registration model with fractional-order regularization based on quasiconformal theory is proposed in this paper. It employs fractional-order differential to achieve a smooth energy functional minima without mesh folding and a priori regular terms. Furthermore, the existence of solution for the proposed model and the convergence of the multi-scale approach are proved. And numerical tests are performed to demonstrate that the proposed algorithm effectively eliminates mesh folding and generates superior registration results.

Key words: Diffeomorphic, Multi-scale, Quasiconformal theory, Fractional-order regularization, Image registration

CLC Number: 

  • TP391
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