NDLI: Reference Sharing Mechanism for Watermark Self-Embedding

Content Provider	IEEE Xplore Digital Library
Author	Xinpeng Zhang Shuozhong Wang Zhenxing Qian Guorui Feng
Copyright Year	1992
Abstract	This paper proposes two novel self-embedding watermarking schemes based upon a reference sharing mechanism, in which the watermark to be embedded is a reference derived from the original principal content in different regions and shared by these regions for content restoration. After identifying tampered blocks, both the reference data and the original content in the reserved area are used to recover the principal content in the tampered area. By using the first scheme, the original data in five most significant bit layers of a cover image can be recovered and the original watermarked image can also be retrieved when the content replacement is not too extensive. In the second scheme, the host content is decomposed into three levels, and the reference sharing methods with different restoration capabilities are employed to protect the data at different levels. Therefore, the lower the tampering rate, the more levels of content data are recovered, and the better the quality of restored results.
Sponsorship	IEEE Signal Processing Society
Page Count	11
File Size	4818915
Starting Page	485
Ending Page	495
File Format	PDF
ISSN	10577149
Volume Number	20
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Watermarking Image restoration Discrete cosine transforms Authentication Data mining Information retrieval Image retrieval Content based retrieval Protection Educational programs self-embedding Fragile watermarking image authentication
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Software

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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
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