Performance analysis of Pseudo-Random Sequence in digital watermarking

被引：0

作者：

Kim, TH ^{[1
]}

Kim, JJ ^{[1
]}

Kim, ES ^{[1
]}

机构：

[1] Kwangwoon Univ, Sch Elect Engn, Natl Res Lab 3D Media, Nowon Gu, Seoul 139701, South Korea

来源：

MATHEMATICS OF DATA/IMAGE CODING, COMPRESSION, AND ENCRYPTION IV, WITH APPLICATIONS | 2001年 / 4475卷

关键词：

digital watermarking; Pseudo Random Sequence; embedding and extraction process;

D O I：

10.1117/12.449589

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

In this paper, comparative analysis on the characteristics of the Pseudo Random Sequence(PRS) and the Normal Random Sequence(NRS) which are used as a watermark for copyright protection and authentication about digital media in the conventional digital watermarking systems. From the analysis, it is found that in case of the NRS, the detection of the watermark might be difficult from many crosscorrelation peak values resulted from other NRS codes because of the non-uniform distribution of 1 and 0 in those codes. However, for the case of the PRS, since it has the uniform distribution of the random number in the generated codes, there exists no crosscorrelation peaks. So the PRS is analyzed to have the robustness against possible attacks such as JPEG image compression and Gaussian noise compared with the case of the NRS. Therefore, in this paper, proving that PRS code become more robust watermark to attack by various image processing such as JPEG compression, Gaussian noise addition, etc by computer simulation.

引用

页码：259 / 266

页数：8

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