Communications on Applied Mathematics and Computation ›› 2025, Vol. 7 ›› Issue (5): 1744-1768.doi: 10.1007/s42967-024-00396-9

• ORIGINAL PAPERS • Previous Articles    

Nonlocal Matrix Rank Minimization Method for Multiplicative Noise Removal

Hui-Yin Yan   

  1. School of Mathematics and Statistics, Xinyang Normal University, Xinyang, 464000, Henan, China
  • Received:2023-11-22 Revised:2024-03-02 Accepted:2024-03-04 Online:2024-06-21 Published:2024-06-21
  • Contact: Hui-Yin Yan,E-mail:yanhuiyin@xynu.edu.cn E-mail:yanhuiyin@xynu.edu.cn

Abstract: Multiplicative noise removal is a challenging problem in image denoising. In this paper, we develop a nonlocal matrix rank minimization method for the multiplicative noise removal problem. By utilizing the logarithm transformation, we convert the problem into an additive noise removal problem and propose a maximum a posteriori (MAP) estimation-based matrix rank minimization model for this kind of additive noise removal. A proximal alternating algorithm is designed to solve the matrix rank minimization model. The convergence of the algorithm is demonstrated by the famous Kurdyka-Łojasiewicz property. Taking advantage of the proposed matrix rank minimization model and its proximal alternating algorithm, a multiplicative noise removal method is finally developed. Numerical experiments illustrate that the proposed method can remove multiplicative noise in images much better than the existing state-of-the-art methods in terms of both image recovered measure quantities and visual qualities.

Key words: Multiplicative noise, Matrix rank minimization, Proximal alternating method, Kurdyka-Łojasiewicz property