MRI Denoising  using Waveatom Shrinkage

MRI Denoising using Waveatom Shrinkage

Article ID

5BFL3

MRI Denoising using Waveatom Shrinkage

Dr. Geetika Dua GGSIPU Delhi

Varun Raj

DOI

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Abstract

It is well known that noise in Magnetic Resonance Image has a Rician distribution. Unlike additive Gaussian noise, Rician noise is signal dependent, and separating signal from noise is a difficult task. In this paper, a denoising technique is used in order to remove Rician noise from MRI using Waveatom shrinkage. De-noising by any shrinkage technique is highly sensitive to the threshold selection. Here to estimate the noise variance, histogram based technique is used and to calculate the shrinkage threshold a new technique is proposed. This method is applied to both simulated images and real images. Wave atom transform has been applied for different noise levels. This has been done in order to find more accurate results. A comparative analysis of wave atom and wavelet is also performed.

MRI Denoising using Waveatom Shrinkage

Authors

Dr. Geetika Dua GGSIPU Delhi

Varun Raj

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How to Cite

Dr. Geetika Dua. 2012. “. Global Journal of Research in Engineering – F: Electrical & Electronic GJRE-F Volume 12 (GJRE Volume 12 Issue F4): .

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

GJRE Volume 12 Issue F4
Pg. 23- 27

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Submission Received February 4, 2012
Accepted February 29, 2012
Published March 15, 2012

Keywords

De-noising histogram Magnetic Resonance Image Rician Noise Variance Estimation WaveAtomTransform

Article Matrices

Total Score: 107

Country: India

Subject: Global Journal of Research in Engineering - F: Electrical & Electronic

Authors: Dr. Geetika Dua,Varun Raj (PhD/Dr. count: 1)

View Count (all-time): 186

Total Views (Real + Logic): 5414

Total Downloads (simulated): 2762

Publish Date: 2012 04, Tue

Monthly Totals (Real + Logic):

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Total Views: 5414

Total Downloads: 2762

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