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Linear Estimation and Wavelet Approach to Image Denoising

Yahya, Norashikin and Kamel , Nidal and Malik , Aamir Saeed (2010) Linear Estimation and Wavelet Approach to Image Denoising. In: Int. Conf. on Intelligent Network and Computing , 6-9 December 2010, Kuala Lumpur.

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Abstract

A linear estimator termed as time domain constrained (TDC) estimator combined with wavelet filtering, is applied for restoration of images corrupted by additive white Gaussian noise (AWGN). Since, signal distortion and residual noise cannot be minimized simultaneously, the TDC estimator keeps the residual noise energy below a threshold while minimizing the signal distortion. Further reduction in the residual noise is achieved by a wavelet-based denoising process involves threshold shrinkage of corrupted wavelet coefficients. The proposed approach is tested with different images corrupted by AWGN at different signal-to-noise values and compared with the conventional wavelet and Wiener filtering.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Centre of Excellence > Center for Intelligent Signal and Imaging Research
Departments > Electrical & Electronic Engineering
Research Institutes > Institute for Health Analytics
ID Code:4489
Deposited By: Dr Aamir Saeed Malik
Deposited On:14 Mar 2011 03:54
Last Modified:19 Jan 2017 08:23

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