An efficient image denoising method integrating multi-resolution local clustering and adaptive smoothing

Subhasish Basak () and Partha Sarathi Mukherjee ()
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Subhasish Basak: Indian Statistical Institute
Partha Sarathi Mukherjee: Indian Statistical Institute

Statistical Methods & Applications, 2025, vol. 34, issue 4, No 9, 767-785

Abstract: Abstract The importance of developing efficient image denoising methods is immense especially for modern applications such as image comparisons, image monitoring, medical image diagnostics, and so forth. Available methods in the vast literature on image denoising can address certain issues in image denoising, but no one single method can solve all such issues. For example, jump regression based methods can preserve linear edges well, but cannot preserve many other fine details of an image. On the other hand, local clustering based methods can preserve fine edge structures, but cannot perform well in presence of heavy noise. The proposed method uses various shapes and sizes of local neighborhood based on local information, and integrates this adaptive approach with the local clustering based smoothing. Theoretical justifications and numerical studies show that the proposed method indeed performs better than these two individual methods, and outperforms many other state-of-the-art techniques as well. This superior performance emphasizes the strong potential of the proposed method for broad applicability in modern image analysis.

Keywords: Adaptive smoothing; Edge preservation; Local clustering; Multi-resolution smoothing; Variable neighborhood (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s10260-025-00806-z

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