论文标题
有效的高容量隐志技术
Efficient High Capacity Steganography Technique
论文作者
论文摘要
表征现代地理技术的性能指标包括容量（即可以隐藏在封面介质中的数据数量），seego质量（即人工制品的可见性），安全性（即未检索性）以及强度或鲁棒性（旨在作为抵抗旨在破坏秘密消息的主动攻击的抵抗力）。在文献中已经研究并提出了基于斐波那契的嵌入技术，以在Stego质量方面以有效的能力来实现有效的隐肌。在本文中，我们研究了一个创新的想法，该思想扩展了通过比特平面映射而不是位平面替换的斐波那契般的隐肌。我们提出的算法使用位平面映射提高了嵌入能力，以将秘密消息的两个位嵌入封面的三位位，而牺牲了Stego质量的边际损失。尽管由于Zeckendorf Theorem施加的限制，但现有的斐波那契嵌入算法并未使用封面的某些强度来嵌入，但我们的建议可以解决此问题并使所有强度值候选嵌入。实验结果表明，与现有的斐波那契方法相比，所提出的技术将嵌入能力加倍，并且可以防止RS，POV和差异图像直方图（DIH）等统计攻击。
Performance indicators characterizing modern steganographic techniques include capacity (i.e. the quantity of data that can be hidden in the cover medium), stego quality (i.e. artifacts visibility), security (i.e. undetectability), and strength or robustness (intended as the resistance against active attacks aimed to destroy the secret message). Fibonacci based embedding techniques have been researched and proposed in the literature to achieve efficient steganography in terms of capacity with respect to stego quality. In this paper, we investigated an innovative idea that extends Fibonacci-like steganography by bit-plane(s) mapping instead of bit-plane(s) replacement. Our proposed algorithm increases embedding capacity using bit-plane mapping to embed two bits of the secret message in three bits of a pixel of the cover, at the expense of a marginal loss in stego quality. While existing Fibonacci embedding algorithms do not use certain intensities of the cover for embedding due to the limitation imposed by the Zeckendorf theorem, our proposal solve this problem and make all intensity values candidates for embedding. Experimental results demonstrate that the proposed technique double the embedding capacity when compared to existing Fibonacci methods, and it is secure against statistical attacks such as RS, POV, and difference image histogram (DIH).
