NDLI: An Improved Image Denoising Algorithm

Content Provider	IEEE Xplore Digital Library
Author	Liqiang Shi
Copyright Year	2015
Description	Author affiliation: Univ. of Sci. & Technol. of China, Hefei, China (Liqiang Shi)
Abstract	Wavelet theory has been developed rapidly in recent years, which has increasingly wide application in image denoising. It is very important to select threshold function and threshold in wavelet threshold denoising algorithm. Different selections will affect the denoising effect directly. In the paper, traditional soft and hard threshold functions were further analyzed and studied, advantages of denoising performances in both soft and hard threshold functions were combined for proposing an improved threshold function. Threshold proposed by Donoho was improved according to characteristics of wavelet decomposition layers and noise wavelet coefficient in the paper. Different wavelet basis and decomposition layers were compared in order to optimize simulation results in the paper. Then, appropriate wavelet basis and decomposition layers were selected for experiment. The experimental results showed that denoising method proposed in the paper can effectively eliminate the noise in the image with good edge information protection and visual effect.
Sponsorship	Hunan Inst. Ind.
Starting Page	109
Ending Page	113
File Size	396138
Page Count	5
File Format	PDF
e-ISBN	9781467371438
DOI	10.1109/ICMTMA.2015.33
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-13
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wavelet domain Gaussian noise Noise reduction threshold value wavelet image denoising Image denoising Wavelet coefficients
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in