Open AccessJournal Article
An Efficient Adaptive Thresholding Technique for Wavelet Based Image Denoising
D.Gnanadurai,V.Sadasivam +1 more
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This article is published in World Academy of Science, Engineering and Technology, International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering.The article was published on 2008-08-20 and is currently open access. It has received 65 citations till now. The article focuses on the topics: Balanced histogram thresholding & Thresholding.read more
Citations
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Short-term traffic speed forecasting hybrid model based on Chaos–Wavelet Analysis-Support Vector Machine theory
TL;DR: This paper constructs a new kernel function using a wavelet function to capture the non-stationary characteristics of the short-term traffic speed data and uses the Phase Space Reconstruction theory to identify the input space dimension.
Journal ArticleDOI
Speckle Suppression in SAR Images Using the 2-D GARCH Model
TL;DR: A novel Bayesian-based speckle suppression method for Synthetic Aperture Radar ( SAR) images is presented that preserves the structural features and textural information of the scene.
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Comparative study of Speckle Noise Reduction of Ultrasound B-scan Images in Matrix Laboratory Environment
R. Sivakumar,D. Nedumaran +1 more
TL;DR: Based on the statistical measures and visual quality of the US B-scan images the Wiener filtering with BayesShrink thresholding technique in the wavelet-domian performed well over the other filter techniques.
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Denoising using wavelets on electric drive applications
Damian Giaouris,John W. Finch +1 more
TL;DR: Wavelet analysis, seldom used as yet in electric drives, is analysed and compared to classical methods and the true power of the wavelet transform is revealed when it is applied to a speed estimation problem where the rotor speed of a permanent magnet machine is modulated and coupled with high frequency components.
Salt and Pepper Noise Detection and removal by Tolerance based Selective Arithmetic Mean Filtering Technique for image restoration
TL;DR: A Tolerance based Arithmetic Mean Filtering Technique to remove salt and pepper noise from corrupted images is proposed.
References
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Journal ArticleDOI
De-noising by soft-thresholding
TL;DR: The authors prove two results about this type of estimator that are unprecedented in several ways: with high probability f/spl circ/*/sub n/ is at least as smooth as f, in any of a wide variety of smoothness measures.
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Adapting to Unknown Smoothness via Wavelet Shrinkage
TL;DR: In this article, the authors proposed a smoothness adaptive thresholding procedure, called SureShrink, which is adaptive to the Stein unbiased estimate of risk (sure) for threshold estimates and is near minimax simultaneously over a whole interval of the Besov scale; the size of this interval depends on the choice of mother wavelet.
Journal ArticleDOI
Adaptive wavelet thresholding for image denoising and compression
TL;DR: An adaptive, data-driven threshold for image denoising via wavelet soft-thresholding derived in a Bayesian framework, and the prior used on the wavelet coefficients is the generalized Gaussian distribution widely used in image processing applications.
Book
Wavelets and Subband Coding
Martin Vetterli,Jelena Kovacevic +1 more
TL;DR: Wavelets and Subband Coding offered a unified view of the exciting field of wavelets and their discrete-time cousins, filter banks, or subband coding and developed the theory in both continuous and discrete time.
Book
Wavelet transforms : introduction to theory and applications
TL;DR: This chapter discusses the MRA, Orthonormal Wavelets, and Their Relationship to Filter Banks, and the Definition of the CWT, as well as other applications of Wavelet Transforms, including Communication Applications.