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Eliminação de ruído impulsivo em imagens coloridas usando um filtro mediano seletivo e retoque digital

Authors: Almeida, Marcos Proença de;

Eliminação de ruído impulsivo em imagens coloridas usando um filtro mediano seletivo e retoque digital

Abstract

Neste trabalho propõe-se um filtro mediano seletivo e um filtro híbrido para eliminação de ruído impulsivo em imagens digitais monocromáticas. O primeiro é baseado em uma modificação do filtro mediano por meio de um detector de ruído impulsivo. O segundo é obtido combinando-se o filtro mediano seletivo com um modelo de retoque digital. A remoção de ruído impulsivo em uma imagem colorida é realizada por meio da extensão dos filtros propostos para cada canal de cor da imagem. Os experimentos realizados indicam que os métodos propostos são eficazes na restauração de imagens com grandes densidades de ruído.

In this paper a selective median filter and a hybrid filter for removing impulsive noise in digital grayscale images are proposed. The first is a median filter modification based on impulsive noise detector. The second is obtained by combining the selective median filter with a digital inpainting model. The noise removal in color image is obtained by extending the proposed filters for each color channel of the image. The experiments indicated that the proposed methods are powerful in restoring images with high densities noise.

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Pós-graduação em Matemática - IBILCE

Country
Brazil
Keywords

Impulsive noise, Image processing, Ruído impulsivo, Retoque digital de imagens, Filtro mediano, Median filter, Image inpainting, Noise removal, Eliminação de ruído, Processamento de imagens - Tecnicas digitais

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green