Steganography using overlapping codebook partition

被引：10

作者：

Chiang, Yung Kuei ^{[1
]}

Tsai, Piyu ^{[1
]}

机构：

[1] Natl United Univ, Dept Comp Sci & Informat Engn, Miaoli 360, Taiwan

来源：

SIGNAL PROCESSING | 2008年 / 88卷 / 05期

关键词：

steganography; information hiding; vector quantization; index-based image;

D O I：

10.1016/j.sigpro.2007.11.009

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A tradeoff between the hiding capacity of a cover image and the quality of a stego-image in steganographic schemes is inevitable. This paper presents overlapping codebook partitioning to challenge this tradeoff. The codewords in a codebook are grouped into sub-clusters, according to similarity. Any size sub-cluster is allowed; moreover, a sub-cluster is permitted to overlap with sub-clusters to increase hiding capacity without sacrificing image quality. As a result of this improved scheme, the hiding capacity of a cover image increases, whereas the quality of a stego-image stays the same. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1203 / 1215

页数：13

共 26 条

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