Open Access Journal

ISSN : 2394-6849 (Online)

International Journal of Engineering Research in Electronics and Communication Engineering(IJERECE)

Monthly Journal for Electronics and Communication Engineering

Open Access Journal

International Journal of Engineering Research in Electronics and Communication Engineering(IJERECE)

Monthly Journal for Electronics and Communication Engineering

ISSN : 2394-6849 (Online)

Video Denoising using Adaptive Transform Domain Approach

Author : Lina Desale 1 Prof. S. B. Borse 2

Date of Publication :21st August 2017

Abstract: Utmost prevailing practical digital video denoising techniques depend upon a traditional statistical model of image noise, such as Independent and identically distributed random variables- Gaussian noise, which is often violated in real life scenarios. For example, following foremost sources of video noise with dissimilar statistical distributions have been identified: photon shot noise, fixed pattern noise, amplifier noise, dark current noise and quantization noise. Performance of prevailing video denoising algorithms will severely degrade when the algorithm is applied on those images with noises evident from multiple sources. In this paper, a dictionary learning based scheme is proposed which computes the basis function adaptively from the first input image frames per fifty frames. Unlike other classical approaches like wavelet or contourlet transforms where the mother wavelet/basis functions are constant. If the mother wavelet/basis function is constant it is more likely that it will fail to capture the minuscule noise details from real life images. Therefore, the basis function is learnt from first frame itself. The dictionary learning method provides sparse representation of the image. Here, hard thresholding algorithm is applied to compute the denoised frame.

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