Three-Phase Lossless Data Hiding Method for the VQ Index Table

• Autorzy: Chang C-C. , Lin C-Y. , Hsieh Y-P.
• Języki publikacji: EN

Abstrakty

EN

Hiding Data in a cover image often applies a steganographic technique that makes the stego image appear as similar to the original cover image as possible. Conventional VQ-based (vector quantization) steganographic methods typically involve codeword replacements to hide secret bits. Such replacements may cause serious distortion or a perceptible block effect on the stego image. In this paper, we propose a three-phase steganographic method for the VQ index table. Instead of applying codeword replacements, the proposed method uses different coding schemes-SOC, SMVQ, and VQ-to imply the secret bits. The quality of the stego image generated by the proposed method is completely equal to that of the original cover image (i.e., the VQ cover image). Experimental results have shown that the proposed method has the best stego image quality compared with other methods. In addition, the proposed method provides adaptive embedding capacity and compression bit rate according to predefined thresholds.

Słowa kluczowe

EN

steganorgraphy; search-ordering coding; side-match vector quantization

• Wydawca: IOS Press
• Czasopismo: Fundamenta Informaticae
• Rocznik: 2008
• Tom: Vol. 82, nr 1-2
• Strony: 1--13
• Opis fizyczny: bibliogr. 16 poz., fot., tab., wykr.

Twórcy

autor

Chang C-C.

autor

Lin C-Y.

autor

Hsieh Y-P.

• Department of Information Engineering and Computer Science Feng Chia University, Taichung, Taiwan, 40724, R.O.C.,

Bibliografia

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