NDLI: Applications of adaptive feedback line enhancer in signal and image enhancement

Content Provider	IEEE Xplore Digital Library
Author	Fahmy, M.F. El-Raheem, G.M.A. Ibrahim, A.F.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. Eng., Assiut Univ., Egypt (Fahmy, M.F.; El-Raheem, G.M.A.)
Abstract	In this paper, two new approaches are proposed for the design of adaptive feedback line enhancer to be used in signal and image enhancement. In the first approach, the performance of an adaptive cross-coupled line enhancer is improved by maximizing the cross correlation functions between the outputs of the cross-coupled line enhancer, over a specified lag length. Next the performance of the line enhancer has been improved and made free from any stability constraint that normally arises in the cross coupled case, by realizing one of the cross-coupled structures, as a lattice filter with feedback. The lattice parameters are recursively updated as new data comes in using the simple LMS algorithm. Illustrative examples are given to show the effectiveness of the proposed approaches, even in case of colored noise with high eigenvalue spread. In case of image enhancement, the proposed cross-coupled structure is implemented in a 2D form. Stability of the resulting 2D feedback structure is easily checked and maintained. The simplicity of the proposed algorithms, allows the inclusion of any edge preserving routines if desired. Simulation results have again demonstrated the effectiveness of the proposed approaches, in both mage enhancement as well as edge preserving.
File Size	523698
File Format	PDF
ISBN	9775031753
DOI	10.1109/NRSC.2003.157325
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-20
Publisher Place	Egypt
Access Restriction	Subscribed
Rights Holder	Academy of Scientific Research and Tech
Subject Keyword	Feedback Line enhancers Image enhancement Stability Lattices Signal design Filters Least squares approximation Colored noise Eigenvalues and eigenfunctions
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