Reversible hiding in DCT-based compressed images

被引:239
|
作者
Chang, Chin-Chen
Lin, Chia-Chen [1 ]
Tseng, Chun-Sen
Tai, Wei-Liang
机构
[1] Providence Univ, Dept Comp Sci & Informat Management, Taichung 433, Taiwan
[2] Feng Chia Univ, Dept Comp Sci & Informat Engn, Taichung 40724, Taiwan
[3] Natl Chung Cheng Univ, Dept Comp Sci & Informat Engn, Chiayi 621, Taiwan
关键词
discrete cosine transform; reversible data hiding; lossless steganography;
D O I
10.1016/j.ins.2007.02.019
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper presents a lossless and reversible steganography scheme for hiding secret data in each block of quantized discrete cosine transformation (DCT) coefficients in JPEG images. In this scheme, the two successive zero coefficients of the medium-frequency components in each block are used to hide the secret data. Furthermore, the scheme modifies the quantization table to maintain the quality of the stego-image. Experimental results also confirm that the proposed scheme can provide expected acceptable image quality of stego-images and successfully achieve reversibility. (C) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码:2768 / 2786
页数:19
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