ScienceDirect® Home Skip Main Navigation Links
You have guest access to ScienceDirect. Find out more.
 
Home
Browse
My Settings
Alerts
Help
 Quick Search
 Search tips (Opens new window)
    Clear all fields    
advertisementadvertisement
Information Sciences
Volume 177, Issue 15, 1 August 2007, Pages 3099-3109
 
Font Size: Decrease Font Size  Increase Font Size
 Abstract - selected
Article
Purchase PDF (1585 K)

 
 
 
Related Articles in ScienceDirect
View More Related Articles
 
View Record in Scopus
 
doi:10.1016/j.ins.2007.02.008    How to Cite or Link Using DOI (Opens New Window)
Copyright © 2007 Elsevier Inc. All rights reserved.

A steganographic method based upon JPEG and particle swarm optimization algorithm

Xiaoxia Lia and Jianjun WangCorresponding Author Contact Information, a, E-mail The Corresponding Author

aDepartment of Electronics Engineering, Fudan University, Shanghai, China

Received 5 January 2006; 
revised 29 January 2007; 
accepted 11 February 2007. 
Available online 22 February 2007.

Purchase the full-text article



References and further reading may be available for this article. To view references and further reading you must purchase this article.

Abstract

In this paper, a novel steganographic method, based on JPEG and Particle Swarm Optimization algorithm (PSO), is proposed. In order to improve the quality of stego-images, an optimal substitution matrix for transforming the secret messages is first derived by means of the PSO algorithm. The standard JPEG quantization table is also modified to contain more secret messages. The transformed messages are then hidden in the DC-to-middle frequency components of the quantized DCT coefficients of the cover-image. Finally, a JPEG file with secret messages is generated through JPEG entropy coding. We compare our algorithm with Chang et al.’s JPEG-based steganographic algorithm. The experimental results show that our proposed method has larger message capacity and better image quality than Chang et al.’s. In addition, our method also has a high security level.

Keywords: JPEG; Steganography; Information hiding; Particle swarm optimization (PSO) algorithm; Jpeg-Jsteg

Article Outline

1. Introduction
2. Related works
2.1. Jpeg-Jsteg and JQTM method
2.2. The optimal LSB substitution method
3. The proposed method
3.1. The embedding procedure
3.2. The extracting procedure
3.3. General principle of particle swarm optimization algorithm
3.4. Searching for substitution matrix through PSO algorithm
4. Experimental results and discussions
5. Conclusions
Acknowledgements
References















Information Sciences
Volume 177, Issue 15, 1 August 2007, Pages 3099-3109
 
Home
Browse
My Settings
Alerts
Help
Elsevier.com (Opens new window)
About ScienceDirect  |  Contact Us  |  Information for Advertisers  |  Terms & Conditions  |  Privacy Policy
Copyright © 2008 Elsevier B.V. All rights reserved. ScienceDirect® is a registered trademark of Elsevier B.V.