Remove impulse noise using adaptive multi-directional weighted mean filter

Hongjin Ma; Yufeng Nie

doi:10.1117/12.2503190

9 August 2018 Remove impulse noise using adaptive multi-directional weighted mean filter

Hongjin Ma, Yufeng Nie

Proceedings Volume 10806, Tenth International Conference on Digital Image Processing (ICDIP 2018); 108062C (2018) https://doi.org/10.1117/12.2503190
Event: Tenth International Conference on Digital Image Processing (ICDIP 2018), 2018, Shanghai, China

Abstract

In this paper, a new adaptive multi-directional weighted mean filter for removing salt-and-pepper noise is proposed. The new filter firstly introduces a variance parameter to judge the gray level difference between the current pixel and its neighborhood pixels and then designs the noise detector by combining the variance parameter and the gray level extreme. After noise detection, the new filter restores the noise corrupted pixels based on the multi-directional image information, which firstly adaptively selects the optimal filtering window and direction template and then replaces the gray level of each noise corrupted pixel by the weighted mean gray level of the pixels on the optimal template. Experimental results show that the proposed filter outperforms many existing main filters in terms of image denoising and detail preservation.

Citation Download Citation

Hongjin Ma and Yufeng Nie "Remove impulse noise using adaptive multi-directional weighted mean filter", Proc. SPIE 10806, Tenth International Conference on Digital Image Processing (ICDIP 2018), 108062C (9 August 2018); https://doi.org/10.1117/12.2503190

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KEYWORDS

Image filtering

Digital filtering

Image restoration

Image processing

Image denoising

Denoising

Nonlinear filtering

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