Reversible data hiding in VQ index table with lossless coding and adaptive switching mechanism
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- 作者：Chuan Qina ; qin@usst.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Yu-Chen Hub ; ychu@pu.edu.tw" class="auth_mail" title="E-mail the corresponding author
- 关键词：Reversible data hiding ; Vector quantization ; Index table ; Search Order Coding ; Adaptive switching
- 刊名：Signal Processing
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：129
- 期：Complete
- 页码：48-55
- 全文大小：784 K
文摘
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A reversible data hiding scheme for the encoded vector quantization (VQ) index table with the improved searching order coding (ISOC) is proposed.
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Original image is first compressed through a sorted VQ codebook.
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All indices are categorized into three types, i.e., SOC type, relative addressing (RA) type and VQ type, based on the relationship between the index and its neighboring indices.
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Each of the SOC and RA types of indices is used to embed 1-bit secret data.
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The hiding capacity of the proposed scheme is higher than the comparative scheme.