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A Secure Semi-Fragile Self-Recoverable Watermarking Algorithm using Group-based Wavelet Quantization
Chunlei Li; Bin Ma; Yunhong Wang; Di Huang; Zhaoxiang Zhang
2012-12-04
Conference NamePacific-Rim Conference on Multimedia
Source PublicationPCM 2012
Conference Date4-6 December 2012
Conference PlaceSingapore, Singapore
AbstractIn this paper, we propose a secure semi-fragile self-recoverable watermarking algorithm using group-based wavelet quantization. The image is split into image blocks with size 16×16. A 5-bit authentication watermark is generated from the first-order statical moments of each image block, and embedded into the mid-frequency bands of another image block by our proposed group-based wavelet quantization method. Security is enhanced by randomly permutating coefficients among a group. Robustness is improved by embedding watermark in largest coefficient inside a sub-group based on significant difference parity quantization (SDPQ) method. Moreover, all adjacent blocks of the test block and its mapping block are taken into account to improve localization accuracy. Experimental comparisons with existing techniques highlight the effectiveness of the proposed watermarking approach.
KeywordSemi-fragile Self-recoverable Tamper Detection Incidental Manipulation
Document Type会议论文
Identifierhttp://ir.ia.ac.cn/handle/173211/13260
Collection类脑智能研究中心
Corresponding AuthorZhaoxiang Zhang
Recommended Citation
GB/T 7714
Chunlei Li,Bin Ma,Yunhong Wang,et al. A Secure Semi-Fragile Self-Recoverable Watermarking Algorithm using Group-based Wavelet Quantization[C],2012.
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