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Accession number;07A0187177
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| Title;STEGANOGRAPHY FOR JPEG2000 COMPRESSED IMAGES WHICH PRESERVES HISTOGRAMS OF DWT COEFFICIENTS |
| Author;
NODA HIDEKI
(Kyushu Inst. Technol., Iizuka, Jpn)
TSUKAMIZU YOHSUKE
(Kyushu Inst. Technol., Kitakyushu, Jpn)
NIIMI MICHIHARU
(Kyushu Inst. Technol., Iizuka, Jpn)
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Journal Title;IEIC Technical Report (Institute of Electronics, Information and Communication Engineers)
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Journal Code:S0532B
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ISSN:0913-5685
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VOL.106;NO.448(IE2006 138-184);PAGE.19-23(2007)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;English |
| Abstract;This paper presents two steganographic methods for JPEG2000 still images which preserve histograms of discrete wavelet transform (DWT) coefficients. The first one is a histogram quasi-preserving method using quantization index modulation (QIM) in DWT domain with a device not to change after-embedding histogram excessively. The second one is a histogram preserving method based on histogram matching technique using two quantizers, where the representatives of each quantizer are given in advance and the intervals for each representative are set so as to preserve the histogram of cover image. Comparing with a conventional JPEG2000 steganography, the two methods show better histogram preservation. The proposed methods are promising candidates for secure JPEG2000 steganography against histogram-based attack. (author abst.) |
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