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    ASIA unversity > 資訊學院 > 資訊工程學系 > 期刊論文 >  Item 310904400/6418


    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/6418


    Title: Three-Phase Lossless Data Hiding Method for the VQ Index Table
    Authors: Chang, C. C.;Lin, C. Y.;Hsieh, Y. P.
    Keywords: Steganography;search-order coding (SOC);side match vector quantization (SMVQ)
    Date: 2008-02
    Issue Date: 2009-12-17 14:57:51 (UTC+8)
    Publisher: Asia University
    Abstract: 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 proposedmethod 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.
    Relation: Fundamenta Informaticae 8(1-2) :1-13
    Appears in Collections:[資訊工程學系] 期刊論文

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