Reversible audio watermarking algorithm using non-causal prediction |
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Authors: | HUO Yongjin XIANG Shijun LIU Shangyi LUO Xinrong BAI Zhongliang |
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Institution: | School of Information Science and Technology, Jinan University, Guangzhou 510632, Guangdong, China |
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Abstract: | Reversible watermarking technique enables to extract embedded information without any loss of the host signal. For the reduction of the embedding distortion, a desirable reversible watermarking approach should exploit efficient prediction way to generate prediction errors with a smaller magnitude for expansion embedding. In this paper, we present a reversible audio watermarking scheme based on a new non-causal prediction method and embedding strategy. The proposed non-causal prediction method provides non-integer prediction errors and the proposed expansion embedding strategy can proceed them for a lower embedding distortion. Experimental results have shown that the proposed reversible technique has a lower embedding distortion for the same embedding payload in comparison with the existing state-of-the-art works. |
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Keywords: | audio reversible watermarking non-causal prediction expansion embedding |
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