Title
Spatially adaptive Total Variation image denoising under salt and pepper noise
Date Issued
01 January 2011
Access level
metadata only access
Resource Type
conference paper
Abstract
Automated selection of the regularization parameter for Total Variation restoration has shown to give very accurate reconstruction results. Most of the literature is devoted to the ℓ 2-TV case (images corrupted with Gaussian noise), whereas for the ℓ 1-TV case (images corrupted with salt-and-pepper noise) there are only a couple of published algorithms. In this paper we present a computationally efficient algorithm for ℓ 1-TV denoising of grayscale and color images, which spatially adapts its regularization parameter. The proposed algorithm, which is based on the Iteratively Reweighted Norm algorithm, uses an adaptive median filter to initially estimate the outliers of the noisy (observed) image, and then proceeds to solve the ℓ 1-TV problem only for the noisy pixels while spatially adapts the regularization parameter based on local statistics. The experimental results show that the proposed method yields impressive results even when 90% of the image pixels are corrupted. © 2011 EURASIP.
Start page
278
End page
282
Language
English
OCDE Knowledge area
Otras ingenierías y tecnologías
Scopus EID
2-s2.0-84863765801
Source
European Signal Processing Conference
ISSN of the container
22195491
Sources of information: Directorio de Producción Científica Scopus