Codebook Partition Based Steganography without Member Restriction

• Autorzy: Chiang Y-K. , Tsai P. , Huang F-L.
• Języki publikacji: EN

Abstrakty

EN

The practice of concealing secret messages into index-based images has generally suffered from problems of image quality degradation and hiding capacity restriction. A steganographic scheme using an improved codebook partition is proposed in this paper. The proposed scheme partitions the codebook into different member sub-clusters in terms of their similarity between the codewords for increasing the hiding capacity and reducing the image distortion. Any size of a sub-cluster was allowed in the proposed scheme, so as to improve the traditional approaches in which the size of a sub-cluster was restricted to the power of two. As a result of this revised scheme, an increased hiding capacity and a reduction in image distortion are obtained, as indicated from experimental results. The average performance of the proposed scheme is superior to that of those standard methods.

Słowa kluczowe

EN

index-based image; information hiding; steganorgraphy

• Wydawca: IOS Press
• Czasopismo: Fundamenta Informaticae
• Rocznik: 2008
• Tom: Vol. 82, nr 1-2
• Strony: 15--27
• Opis fizyczny: bibliogr. 14 poz., fot., tab., wykr.

Twórcy

autor

Chiang Y-K.

autor

Tsai P.

autor

Huang F-L.

• Department of Computer Science and Information Engineering, National United University, Miaoli, 360, Taiwan,

Bibliografia

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