Reversible Quantization-Index Modulation Using Neighboring Correlation

Authors:
Chin-Chen Chang;Wen-Chuan Wu
Affiliations:
Department of Information Engineering and Computer Science, Feng Chia University, Taichung, Taiwan, R.O.C. 40724 and Department of Computer Science and Information Engineering, National Chung Chen ...;Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan, R.O.C. 621
Venue:
IWDW '07 Proceedings of the 6th International Workshop on Digital Watermarking
Year:
2008

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Abstract

In this paper, a novel reversible data hiding scheme, which can recover the original information without any distortions after the hidden secret data have been extracted, based on quantization-index modulation (QIM) technique is presented. This proposed scheme utilizes the local spatial correlation of neighboring quantized VQ indices to conceal secret data under image coded stream and achieve data reversibility simultaneously. As for some not-well-correlated indices, this embedding system burdens the quantized codes with additional indicators for the hereafter recovery. Experimental results proved that the proposed scheme is well furnished with the lossless recovery facility than other QIM-based data hiding schemes.