NDLI: Digital watermarking method using LDPC code for clipped image

Please wait, while we are loading the content...

Content Provider	ACM Digital Library
Author	Hirata, Nobuhiro Kawamura, Masaki
Abstract	A method of watermarking using low-density parity-check (LDPC) code was evaluated according to Information Hiding Criteria (IHC). Joint Photographic Experts Group (JPEG) compression and clipping are assumed to be attacks against stego-images in these criteria. Markers or synchronization codes were embedded into stego-images to find the starting positions of marked areas to defend against clipping attacks. LDPC code effectively decoded messages without errors for JPEG compression. We could use quantization index modulation (QIM) for embedding and extracting watermarks without the original images. As a result, our method could achieve an average peak signal-to-noise ratio (PSNR) of 47.141 dB when we assessed image quality. It could achieve an average compression ratio of 1.334% with JPEG compression when we assessed tolerance.
Starting Page	25
Ending Page	30
Page Count	6
File Format	PDF
ISBN	9781450328036
DOI	10.1145/2598908.2598913
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-06-03
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Ldpc code Sum-product algorithm Quantization index modulation Digital watermarking
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

Digital watermarking method using LDPC code for clipped image