This paper presents two histogram preserving JPEG steganographic methods aiming at secure JPEG steganography against histogram-based attacks. The first one is a histogram quasi-preserving method, which uses quantization index modulation (QIM) at quantization step of DCT coefficients. Since a straightforward application of QIM causes a significant histogram change, a device is introduced in order not to change the after-embedding histogram excessively. The second one is a histogram preserving method based on histogram matching using two quantizers with a dead zone. In comparison with F5 as a representative JPEG steganography, the two methods show high performance with regard to embedding rate, PSNR of stego image, and particularly histogram preservation.


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    Title :

    Application of QIM with dead zone for histogram preserving JPEG steganography


    Contributors:
    Noda, H. (author) / Niimi, M. (author) / Kawaguchi, E. (author)


    Publication date :

    2005-01-01


    Size :

    102839 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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