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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
会议名称Pacific-Rim Conference on Multimedia
会议录名称PCM 2012
会议日期4-6 December 2012
会议地点Singapore, Singapore
摘要In 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.
关键词Semi-fragile Self-recoverable Tamper Detection Incidental Manipulation
文献类型会议论文
条目标识符http://ir.ia.ac.cn/handle/173211/13260
专题类脑智能研究中心
通讯作者Zhaoxiang Zhang
推荐引用方式
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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