High Capacity Steganographic Scheme for JPEG Compression Using Particle Swarm Optimization

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Abstract:

A steganographic scheme for JPEG compressed image with high capacity and with good quality of the stego-image was presented. A quantization table of size 16*16 was used instead of the commonly used size 8*8 in most JPEG compression to obtain higher embedding capacity. In addition, to improve the quality of the stego-image, particle swarm optimization (PSO) was applied to find an optimal substitution matrix to transform the secret data into the best fit for the cover image before embedding. The experimental results show that, for the proposed scheme, the improvement of the quality of the stego-image and a higher capacity of the secret data was achieved.

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Periodical:

Advanced Materials Research (Volumes 433-440)

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5118-5122

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Online since:

January 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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