Research Article
Structural Digital Signature and Semi-Fragile Fingerprinting for Image Authentication in Wavelet Domain
@INPROCEEDINGS{10.1109/IAS.2007.46, author={Yan Zhu and Chang-Tsun Li and Hong-Jia Zhao}, title={Structural Digital Signature and Semi-Fragile Fingerprinting for Image Authentication in Wavelet Domain}, proceedings={1st International ICST Workshop on Data Hiding for Information and Multimedia Security}, publisher={IEEE}, proceedings_a={DHIM}, year={2007}, month={9}, keywords={Authentication Computer science Data mining Digital signatures Fingerprint recognition Image coding Information security Quantization Watermarking Wavelet domain}, doi={10.1109/IAS.2007.46} }- Yan Zhu
Chang-Tsun Li
Hong-Jia Zhao
Year: 2007
Structural Digital Signature and Semi-Fragile Fingerprinting for Image Authentication in Wavelet Domain
DHIM
IEEE
DOI: 10.1109/IAS.2007.46
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.