Robust watermarking procedure based on JPEG discrete cosine transform image compression

被引：10
|
作者：
Stankovic, Srdjan [1 ]
Orovic, Irena [1 ]
Zaric, Nikola [1 ]
机构：
[1] Univ Montenegro, Dept Elect Engn, Podgorica 81000, Montenegro
来源：
JOURNAL OF ELECTRONIC IMAGING | 2008年 / 17卷 / 04期
关键词：
D O I：
10.1117/1.2981832
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new procedure for watermarking in the 8 X 8 block-based discrete cosine transform (DCT) domain (used for JPEG compression) is proposed. The influence of JPEG quantization on watermarked coefficients and on watermark is considered. The criterion for coefficients selection is derived, providing robustness for an arbitrary quantization degree. The modified form of coefficients probability density function (pdf) leads to the class of modified optimal detectors. Theoretical results are illustrated on various examples. Efficiency of the proposed procedure is shown in the presence of different quantization degrees, and other common attacks. (C) 2008 SPIE and IS&T [DOI: 10.1117/1.2981832]
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收藏
页数：9
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