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Shape Adaptive Estimation of Variance in Steerable Pyramid Domain and Its Application for Spatially Adaptive Image Enhancement Publisher



Rabbani H1
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Authors Affiliations
  1. 1. Biomedical Engineering Department, Isfahan University of Medical Sciences, Iran

Source: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings Published:2009


Abstract

In the recent years, denoising based on the spatially adaptive algorithms that employ anisotropic adaption have been developed. These methods are able to match to the local statistics, preserve the edges and truly remove the noise from the texture of the images. On the other hand, a huge proportion of image enhancement methods are implemented in the sparse domains (e.g., wavelets, curvelets, contourlets and steerable pyramid decomposition) due to impressive properties of these transforms such as heavy-tailed nature of marginal distribution, locality and multiresolution. In this paper we try to establish a relation between two mentioned approaches by estimating the local variances of steerable pyramid coefficients using a shape-adaptive window. ©2009 IEEE.
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