[PDF][PDF] Image denoising based on sparse representation in a probabilistic framework

EL Mohamed, HA Khalil, OF Hassan - Signal Process. Int. J, 2014 - Citeseer
EL Mohamed, HA Khalil, OF Hassan
Signal Process. Int. J, 2014Citeseer
Image denoising is an interesting inverse problem. By denoising we mean finding a clean
image, given a noisy one. In this paper, we propose a novel image denoising technique
based on the generalized k density model as an extension to the probabilistic framework for
solving image denoising problem. The approach is based on using overcomplete basis
dictionary for sparsely representing the image under interest. To learn the overcomplete
basis, we used the generalized k density model based ICA. The learned dictionary used …
Abstract
Image denoising is an interesting inverse problem. By denoising we mean finding a clean image, given a noisy one. In this paper, we propose a novel image denoising technique based on the generalized k density model as an extension to the probabilistic framework for solving image denoising problem. The approach is based on using overcomplete basis dictionary for sparsely representing the image under interest. To learn the overcomplete basis, we used the generalized k density model based ICA. The learned dictionary used after that for denoising speech signals and other images. Experimental results confirm the effectiveness of the proposed method for image denoising. The comparison with other denoising methods is also made and it is shown that the proposed method produces the best denoising effect.
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