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http://dx.doi.org/10.5392/JKCA.2011.11.4.092

Comparing of Blind Watermarking Method using DWT and CAT  

Gong, Hui (전북대학교 전자공학부)
Shin, Jin-Wook (전북대학교 BK21 전자정보 고급인력양성사업단)
Yoon, Sook (목포대학교 멀티미디어공학과)
Park, Dong-Sun (전북대학교 IT융합연구센터)
Publication Information
The Journal of the Korea Contents Association / v.11, no.4, 2011 , pp. 92-100 More about this Journal
Abstract
In this paper, we propose a novel blind digital watermarking method based on a cellular automata transform (CAT). CAT is based on dynamic systems known as cellular automata(CA) and uses transform bases which are differently defined by a rule number, the number of neighbors, the number of cells, and an initial state, etc. The proposed CAT based method is compared with a blind watermarking method based on DWT which is commonly used for a domain transform in signal processing. We analyse properties on changes of DWT coefficients and CAT coefficients under various attacks and determine optimal parameters for a watermarking method robust to attacks. The simulations show that the watermarked images with high PSNR and MSSIM look visually identical to originals and are robust against most of typical image processing attacks. Moreover, the proposed CAT based watermarking method is superior to the DWT based one in robustness to most of typical image processing attacks including JPEG compression, median and average filtering, scaling, cropping, and histogram equalization.
Keywords
Watermark; Blind Watermark; Cellular Automata Transform; Discrete Wavelet Transform; Basis function; Copyright Protection; Robustness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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