A new map estimator for wavelet domain image denoising using vector-based hidden Markov model

2015 ◽  
Author(s):  
Marzieh Amini ◽  
M. Omair Ahmad ◽  
M. N. S. Swamy
Keyword(s):  
Markov Model ◽  
Hidden Markov Model ◽  
Image Denoising ◽  
Hidden Markov ◽  
Wavelet Domain ◽  
Map Estimator

FRAME-BASED IMAGE DENOISING USING HIDDEN MARKOV MODEL

2008 ◽  
Vol 06 (03) ◽  
pp. 419-432 ◽  
Author(s):  
XIAOYUAN YANG ◽  
XUDONG ZHANG ◽  
ZHIPIN ZHU
Keyword(s):  
Markov Model ◽  
Hidden Markov Model ◽  
Hidden Markov Models ◽  
Image Denoising ◽  
Markov Models ◽  
Hidden Markov ◽  
Wavelet Domain ◽  
Wavelet Frame ◽  
Text Images ◽  
New Algorithms

Wavelet-domain hidden Markov models (HMMs), and in particular, hidden Markov tree (HMT), have been recently proposed and applied to image denoising. In this paper, we present the hidden Markov model and corresponding algorithm based on frame-domain. This model can effectively capture the correlation of wavelet frame coefficients, and we apply this model for image denoising. Furthermore, two new algorithms are developed for denoising. We demonstrate the performance of our new method on some text images with very encouraging results.

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