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Digital Watermarking using Multi-resolution Characteristic of 2D Cellular Automata Transform  

Piao, Yong-Ri (부경대학교 정보통신공학과 정보시스템 연구실)
Kim, Seok-Tae (부경대학교 전자컴퓨터정보통신공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.1C, 2009 , pp. 105-112 More about this Journal
Abstract
In this paper, we propose a digital watermarking method using Multi-resolution Characteristic of 2D CAT (2D cellular automata transform). Firstly, we select the gateway values to generate a basis function and the basis function transforms images into cellular automata space. Then, we embed the random bit sequence as watermark in specific parts of cellular automata transform coefficients. The proposed method not only verifies higher fidelity than the existing method but also stronger stability on JPEG lossy compression, filtering, sharpening and noise through tests for robustness. Moreover, the proposed scheme allows only one 2D CAT basis function per gateway value. Since there are $2^{96}$ possible gateway values.
Keywords
셀룰러 오토마타 변환;게이트웨이 값;기저함수;다 해상도;안전성;강인성;
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Times Cited By KSCI : 2  (Citation Analysis)
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