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A Filter To Remove Gaussian Noise by Clustering the Gray Scale

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Abstract

An algorithm to suppress Gaussian noise is presented, based on clustering (grouping) gray levels. The histogram of a window sliding across the image is divided into clusters, and the algorithm outputs the mean level of the group containing the central pixel of the window. This filter restores well the majority of noisy pixels, leaving only few of them very deviated, that can be finally restored with a common filter for impulsive noise, such as a median filter. In this paper the clustering filter CF is described, analysed and compared with other similar filters.

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Authors and Affiliations

  1. Dept. Matem´atica Aplicada, Universidad de Granada, Spain, Facultad de Ciencias, Avda. Fuentenueva s/n, 18071, Granada, Spain

    Zakaria Atae-Allah & José Martínez Aroza

Authors
  1. Zakaria Atae-Allah
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  2. José Martínez Aroza
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Atae-Allah, Z., Aroza, J.M. A Filter To Remove Gaussian Noise by Clustering the Gray Scale. Journal of Mathematical Imaging and Vision 17, 15–25 (2002). https://doi.org/10.1023/A:1020718507843

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