DocumentCode :
710089
Title :
Enhancement using chaos of a steganography method in DCT domain
Author :
Habib, Milia ; Bakhache, Bassem ; Battikh, Dalia ; El Assad, Safwan
Author_Institution :
LaSTRe Lab., Lebanese Univ., Tripoli, Lebanon
fYear :
2015
fDate :
April 29 2015-May 1 2015
Firstpage :
204
Lastpage :
209
Abstract :
Recently, Steganography is widely used for communicating data secretly. It can be divided into two domains spatial and frequency. One of the most used frequency transformation is Discrete Cosine Transform DCT. There are many techniques based on DCT. The most common is the DCT steganography based on Least Significant Bit LSB. Many proposed methods rely on it such as the LSB-DCT randomized bit embedding based on a threshold. This method is simple and provides some security. In this paper, a secure DCT steganography method is proposed. It allows hiding a secret image in another image randomly using Chaos. The chaotic generator Peace Wise Linear Chaotic Map PWLCM with perturbation was selected, it has good chaotic properties and an easy implementation. It was used to obtain the pseudo-random series of pixels in which the secret image will be embedded in their DCT coefficients. It enhances the LSB-DCT technique with threshold. Many metrics have been evaluated such as Peak Signal to Noise Ratio (PSNR), Structural Similarity (SSIM) Index and the capacity. A supervised universal approach based on Fisher Linear Discriminator (FLD) was used to evaluate the security against the steganalysts. The obtained experimental results demonstrate that the proposed algorithm achieves higher quality and security.
Keywords :
discrete cosine transforms; image enhancement; steganography; Fisher linear discriminator; LSB-DCT randomized bit embedding; PWLCM; chaotic generator peace wise linear chaotic map; discrete cosine transform; least significant bit; pseudo-random series; secret image; secure DCT steganography method; supervised universal approach; Chaotic communication; Discrete cosine transforms; Frequency-domain analysis; Generators; PSNR; Security; Chaos; DCT; FLD; LSB-DCT; PSNR; PWLCM; Steganography; threshold;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Digital Information and Communication Technology and its Applications (DICTAP), 2015 Fifth International Conference on
Conference_Location :
Beirut
Print_ISBN :
978-1-4799-4130-8
Type :
conf
DOI :
10.1109/DICTAP.2015.7113200
Filename :
7113200
Link To Document :
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