Improved spread spectrum:: A new modulation technique for robust watermarking

被引：332

作者：

Malvar, HS ^{[1
]}

Florêncio, DAF ^{[1
]}

机构：

[1] Microsoft Res, Commun Collaborat & Signal Proc Grp, Redmond, WA 98052 USA

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2003年 / 51卷 / 04期

关键词：

data hiding; information embedding; spread spectrum; watermarking;

D O I：

10.1109/TSP.2003.809385

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：

This paper introduces a new watermarking modulation technique, which we call improved spread spectrum (ISS). When compared with traditional spread spectrum (SS), the signal does not act as a noise source, leading to significant gains. In some examples, performance improvements over SS are 20 dB in signal-to-noise ratio (SNR) or ten or more orders of magnitude in the error probability. The proposed method achieves roughly the same noise robustness gain as quantization index. modulation (QIM) but without the amplitude scale sensitivity of QIM. Our proposed ISS is as robust in practice as traditional SS.

引用

页码：898 / 905

页数：8

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