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Indexed by:期刊论文

Date of Publication:2010-11-01

Journal:JOURNAL OF SYSTEMS AND SOFTWARE

Included Journals:SCIE、EI、Scopus

Volume:83

Issue:11,SI

Page Number:2073-2082

ISSN No.:0164-1212

Key Words:Reversible data hiding; Vector quantization; VQ index table; Principle component analysis; Bit rate

Abstract:Reversible image data hiding technology means the cover image can be totally recovered after the embedded secret data is extracted. In this paper, we propose a reversible image data hiding scheme based on vector quantization (VQ) compressed images. The secret bits are embedded into the VQ index table by modifying the index value according to the difference of neighboring indices. The data hiding capacity and the size of the final codestream (embedded result) are a trade-off, and it can be decided by users. In other words, the proposed scheme has flexible hiding capacity ability. To estimate the performance, the proposed scheme was compared with the scheme proposed by Wang and Lu (2009). The results of the comparison showed that our proposed scheme is superior to the scheme proposed by Wang and Lu in both data hiding capacity and bit rate. (C) 2010 Elsevier Inc. All rights reserved.