靜止圖像的信息隱藏容量研究
The Study on the Capacity of Information Hiding System on Still Images
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摘要: 信息隱藏容量的計(jì)算和估計(jì)是信息偽裝領(lǐng)域中的最困難問題之一。該文從編碼和集合論的角度考察了離散情形下靜止圖像的信息隱藏容量的計(jì)算和性質(zhì)，給出了相關(guān)的定義和計(jì)算方法，并給出了在無攻擊者條件下靜止圖像的信息隱藏容量只與失真限制和圖像數(shù)據(jù)源的概率分布有關(guān)的結(jié)論。進(jìn)一步，還給出了有攻擊者情形下的隱藏容量的相關(guān)結(jié)果。
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關(guān)鍵詞:
- 信息隱藏;隱藏容量;編碼論;集合論;失真函數(shù)
Abstract: To evaluate and calculate the capacity of information hiding system is a crucial topic of the field. From the point of view of the coding theory and set theory, this paper suggest a methodology for calculating the capacity of information hiding system on still images in a discrete case, meantime, some definitions are given and a conclusion that the capacity in the condition of no attackers is only related to the distortion function and the PMF(Probability Mass Function) of the source data is drawn out. Furthermore, the results of the capacity of information hiding in the case with attackers are given also. -
Barmi M, Bartolini F, et al.. Capacity of full frame DCT image watermarks[J]. IEEE Trans. on Image Processing, 2000, IP-9(8): 1450-1455.[2]Cohen A S, Lapidoth A. The capacity of the vector Gaussian watermarking game[C]. ISIT2001,Washington, DC, June 2001: 24-29.[3]Moulin P, OSullivan J A. Information-theoretic analysis of information hiding[J]. IEEE Trans.on Information Theory, 2003, IT-49(3): 563-593.[4]OSullivan J A, Moulin P, et al.. Information theoretic analysis of steganography[C]. ISIT 1998,Cambridge, MA, USA, August 1998: 16-21. -
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