DocumentCode :
3367410
Title :
Structural Digital Signature and Semi-Fragile Fingerprinting for Image Authentication in Wavelet Domain
Author :
Zhu, Yan ; Li, Chang-Tsun ; Zhao, Hong-Jia
Author_Institution :
Peking Univ., Beijing
fYear :
2007
fDate :
29-31 Aug. 2007
Firstpage :
478
Lastpage :
483
Abstract :
In this paper, a novel semi-fragile authentication scheme based on block-mean quantization in the wavelet domain is proposed for image authentication. The scheme is composed of a structural digital signature process and a semi-fragile watermarking/fingerprinting algorithm. In the signature process, the invariants are extracted as authentication codes from the quantization relationships and hierarchy information of discrete wavelet decomposition. The authentication codes consist of inter-block and intra-block codes in order to detect and localize tampering. The semi-fragile fingerprinting algorithm is intended to embed the signature via the use of block-mean quantization. The proposed scheme can effectively detect and localize the malicious modification while tolerating lossy compression.
Keywords :
data compression; digital signatures; discrete wavelet transforms; fingerprint identification; image processing; quantisation (signal); watermarking; authentication codes; block-mean quantization; discrete wavelet decomposition; image authentication; interblock code; intrablock code; lossy compression; semifragile fingerprinting; semifragile watermarking; structural digital signature; wavelet domain; Authentication; Computer science; Data mining; Digital signatures; Fingerprint recognition; Image coding; Information security; Quantization; Watermarking; Wavelet domain;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Assurance and Security, 2007. IAS 2007. Third International Symposium on
Conference_Location :
Manchester
Print_ISBN :
0-7695-2876-7
Electronic_ISBN :
978-0-7695-2876-2
Type :
conf
DOI :
10.1109/IAS.2007.46
Filename :
4299820
Link To Document :
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