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http://dx.doi.org/10.6109/jkiice.2010.14.6.1409

Digital Watermarking Technique in Wavelet Domain for Protecting Copyright of Contents  

Seo, Young-Ho (광운대학교 교양학부)
Choi, Hyun-Jun (안양대학교 정보통신공학과)
Kim, Dong-Wook (광운대학교 전자재료공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.14, no.6, 2010 , pp. 1409-1415 More about this Journal
Abstract
In this paper we proposed the watermarking technique using the markspace which is selected by tree-structure between the subbands in the wavelet domain and feature information in the spatial domain. The watermarking candidate region in the wavelet domain is obtained by the markspace selection algorithm divides the highest frequency subband to several segments and calculates theirs energy and the averages value of the total energy of the subband. Also the markspace of the spatial domain is obtained by the boundary information of a image. The final markspace is selected by the markspaces of the wavelet and spatial domain. The watermark is embedded into the selected markspace using the random addresses by LFSR. Finally the watermarking image is generated using the inverse wavelet transform. The proposed watermarking algorithm shows the robustness against the attacks such as JPEG, blurring, sharpening, and gaussian noise.
Keywords
digital watermarking; copyright protect; wavelet transform; edge detection; random sequence; LFSR; energy;
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