Reversible Quantization-Index Modulation Using Neighboring Correlation
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.
KeywordsImage hiding reversibility spatial correlation VQ compression
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