Reversible data hiding for VQ indices using hierarchical state codebook mapping
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DOI: 10.1007/s11042-017-5490-3
Abstract: In this paper, we present an approach to efficiently hide sensitive data in vector quantization (VQ) indices and reversibly extract sensitive data from encrypted code stream. The approach uses two patterns to compress VQ indices.… read more here.
Keywords: codebook mapping; hierarchical state; index; state codebook ... See more keywords
New SMVQ scheme with exactly the same PSNR of VQ by introducing extend state codebook
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DOI: 10.1007/s11042-017-5584-y
Abstract: Side match vector quantization (SMVQ) is an effective coding technique and it has been widely used in low bit rate image compression and data hiding techniques. It utilizes the correlations between neighboring blocks to better… read more here.
Keywords: state; vector; scheme; extend state ... See more keywords