NDLI: Restoration of semi-transparent blotches in damaged texts, manuscripts, and images through localized, logarithmic image enhancement

Content Provider	IEEE Xplore Digital Library
Author	Greenblatt, A. Panetta, K. Agaian, S.
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Tufts Univ., Medford, MA (Greenblatt, A.; Panetta, K.)
Abstract	Great libraries of historic texts, manuscripts, and images are available at this time. The information contained in these documents will be of critical importance in documenting the history of humanity in the years to come. However, many of these documents are degrading for a variety of reasons, including semi-transparent blotches. Current restoration techniques are either chemical in nature or involve significant user interaction through a desktop computer. Due to operator costs, either method is too expensive for the large quantity of information that needs to be preserved. Automated blotch removal algorithms exist, however they all have severe limitations: Some mechanisms only work on text and not images while others leave edges around the blotch or blur the image within the blotch. This paper introduces an automated Local Logarithmic Restoration Algorithm to restore semi-transparent blotches in a variety of documents. Intensive computer simulations show: (1) the new algorithm outperforms competing algorithms by providing better local contrast preservation, expanded saturation reduction capabilities, and improved edge removal; and (2) it is a flexible and practical algorithm for batch restoration many pages of text, manuscripts, or images.
Starting Page	484
Ending Page	489
File Size	1319583
Page Count	6
File Format	PDF
ISBN	9781424416875
DOI	10.1109/ISCCSP.2008.4537274
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-12
Publisher Place	Malta
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Costs Computer simulation semi-transparent Image restoration enhancement History water Chemicals Degradation adaptive USA Councils image restoration blotch Libraries text Image enhancement Pattern matching restoration
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

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