CDMA-based Watermarking Schemes in DWT Domain

被引：0

作者：

Wang, Shih-Wen ^{[1
]}

Huang, Yuh-Ming ^{[1
]}

机构：

[1] Natl Chi Nan Univ, Dept Comp Sci & Informat Engn, Nantou, Taiwan

来源：

PROCEEDINGS 2016 IEEE 6TH INTERNATIONAL CONFERENCE ON ELECTRONICS INFORMATION AND EMERGENCY COMMUNICATION (ICEIEC) | 2016年

关键词：

CDMA; spread spectrum; blind watermarking; spreading code; DWT;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

CDMA-based watermarking is an effective technique since the watermark energy is dispersed over a large number of frequencies and the watermark energy embedded into each frequency is small. Due to the fact that, in the subspace spanned by the spreading codes, it is hard to find a projection vector which is approximated closely to the original cover image vector to significantly degrade the influence of cover image on the accuracy of watermark extraction. It motivates us to propose a variance-reduction technique to enhance the robustness of watermarking scheme in this paper.

引用

页码：29 / 33

页数：5

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