Abstract
Reversible watermarking has extensive applications in fields such as medical data management and forensic enforcement. In this article, we propose a modified reverse zero-run length (RZL) coding method for reversible watermarking, which introduces fewer modifications to cover than previous ones under the same embedding rate. By combining the coding method with histogram shift and quantization table modification strategy, we propose a novel reversible data hiding algorithm for JPEG images. Compared with previous art, when embedding the same payload, our method has an improvement of at least 2 dB in stego image’s quality, which proves the effectiveness and advantage of our algorithm.
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Foundation item: Supported by the National Natural Science Foundation of China (61170234 and 60803155), the National Science and Technology Major Project of China (2010ZX03004-003), and the High-Tech Research and Development Program of China (863 program) (2009AA012201).
Biography: CHEN Biao, male, Master candidate, research direction: image and video processing, information hiding.
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Chen, B., Zhang, W. & Yu, N. Reversible watermarking in JPEG images based on modified RZL codes and histogram shift. Wuhan Univ. J. Nat. Sci. 18, 126–132 (2013). https://doi.org/10.1007/s11859-013-0904-1
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DOI: https://doi.org/10.1007/s11859-013-0904-1