Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/8832
標題: 線性碼之應用:區段JPEG編碼與乘積資料隱藏碼
Applications of Linear Codes:Joint JPEG-Block Codes and Product-based Data Hiding Codes
作者: 戴志翰
Tai, Chih-Han
關鍵字: JPEG;資料隱藏;Block code;Data Hiding;區塊碼
出版社: 電機工程學系所
引用: [1] C. E. Shannon, ``A mathematical theory of communication,'' Bell Syst. Tech. J., vol. 27, pp. 379-423, 623-656, Jul./Oct. 1948. [2] Z. Peng, Y.-F. Huang and D. J. Costello, ``Turbo codes for image transmission-A Joint channel and source decoding approach,'' emph{IEEE J. Sel. Areas Commun.,} vol. 18, no. 6, pp. 868-879, Jun. 2000. [3] J. Hagenauer and R. Bauer, ``The turbo principle in joint source channel decoding of variable length codes,'' in emph{Proc. IEEE ITW,} pp. 128-130, 2001. [4] G.-C. Zhu and F. Alajaji, ``Joint source-channel trubo coding for binary Markov sources,'' emph{IEEE Trans. Wireless Commun.,} vol. 5, no. 5, pp. 1065-1075, May 2006. [5] X. Jaspar, C. Gillemot, and L. Vandendorpe, ``Joint source-channel turbo techniques for discrete-valued sources: from theory to practice,'' emph{Proc. IEEE,} vol. 95, no. 6, pp. 1345-1361, Jun. 2007. [6] W.B. Pennebaker and J.L. Mitchell, emph{The JPEG Still Image Data Compression Standard}, New York: Van Nostrand Reinhold, 1993.. [7] G. K. Wallace, ``The JPEG still picture compression standard,'' Issue of Communications of the ACM, April 1991. [8] J. Lu, et al., ``Mobile image transmission using combined source and channel coding with low complexity concealment,`` Signal Processing: emph{Image Communication}, 12, pp. 87-104, 1998. [9] I. Kozintsev, ``Robust image transmission over energy-constrained time-varying channel using multi-resolution joint source-channel coding,'' IEEE Transactio on Signal Processing, Vol. 46, No. 4, pp. 1012-1026, 1998. [10] A. J. Goldsmith, et al., ``Joint design of fixed-rate source codes and multi-resolution channel codes,'' IEEE Transactions on Communications, Vol. 46, No. 10, pp. 1301-1312, 1998. [11] J.Y. Byun, K.H. Jung and K.Y. Yoo,``Improved Data Hiding Method by Block Parity for Binary Images,''emph{Computer Science and Software Engineering}, vol. 3, pp. 931 - 934, 2008. [12] R.Y.M. Li , O.C. Au, C.K.M. Yuk, S.K Yip and S.Y Lam, ``Hlaftone Image Data Hiding with Block-Overlapping Parity Check,'' {it Speech and Signal Processing}, vol. 2, pp. II-193-II-196, 2007. [13] Z. Li and H. Zhang,``A New Data Hiding Method in Binary Images,''emph{Innovative Computing, Information and Control}, vol. 3, pp. 66-69, 2006. [14] M.S. Fu and O.C. Au ,`` Data hiding watermarking for halftone images''emph{Image Processing, IEEE Transactions }, vol. 11, pp.477-484, 2002. [15] M.S. Fu and O.C. Au ,`` Data hiding by smart pair toggling for halftone images,'' emph{Speech and Signal Processing}, vol. 6, pp. 2318 - 2321 vol.4, 2000.
摘要: 
本論文提出joint JPEG-block coding(JJBC)系統,使用BCJR軟解碼,並提出一種新的籬笆結構配合BCJR解碼,透過JPEG壓縮將影像品質維持在一個可以接受的程度下,在AWGN通道以及無線通道是模擬其效能。傳統Tandem系統是將訊源編碼與通道編碼分開來獨立設計,而JPEG壓縮與區塊碼的結合,與Tandem系統相比,JJBC在解碼時可以避免錯誤疊代的情況。從實驗結果中可以發現,JJBC在高雜訊時PSNR的表現上較Tandem系統好上許多。在PSNR=20dB時,且IEEE802.11b(AWGN)通道下,JJBC較Tandem系統好6dB(3dB)。
在二元影像藏匿上,本論文使用乘積碼,提出一個快速有效的嵌入二位元訊息的方法,從實驗結果來看,我們提出的方法跟其他論文比起來可以有較佳的效能。

This paper proposes a joint JPEG-block coding system (JJBC) based on BCJR decoding that maintains an acceptable image quality over AWGN and wireless channels. The joint design of JPEG compression and block codes in the transmitter has the advantage of avoiding error propagation and of low decoding complexity, compared to the conventional tandem system with separate optimization of source coding and channel coding. The PSNR performance of the JJBC system is much better than that of the tandem system when the low signal to noise ratio is low. Experimental results show that the proposed JJBC system achieves 6dB (3 dB) reduction at PSNR=20dB, compared to the conventional tandem system,under wireless IEEE 802.11b (AWGN) channels.
The present paper use product code, proposed that a fast and effective data hiding method. Looking from the experimental result, the method we proposed have the good performance compared with other papers.
URI: http://hdl.handle.net/11455/8832
其他識別: U0005-1507201015095800
Appears in Collections:電機工程學系所

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