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.
Original language | English |
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Title of host publication | Proceedings - IAS 2007 3rd Internationl Symposium on Information Assurance and Security |
Pages | 478-483 |
Number of pages | 6 |
DOIs | |
Publication status | Published - 2007 |
Event | 3rd Internationl Symposium on Information Assurance and Security, IAS 2007 - Manchester, United Kingdom Duration: 20 Aug 2007 → 31 Aug 2007 |
Conference
Conference | 3rd Internationl Symposium on Information Assurance and Security, IAS 2007 |
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Country | United Kingdom |
City | Manchester |
Period | 20/08/07 → 31/08/07 |