Abstract:
This paper proves a lemma of how to preserve high order statistics based on analyzing the decomposition characters of discrete Haar wavelet. According to this lemma, it proposes a spatial steganograph algorithm. It can preserve high order statistics of H, V and D areas, and make embedded messages sightless. Experimental results show that it can effectively resist RS attack. It arises some inspiration for constructing better steganograph methods to preserve high order statistics.
Key words:
steganograph algorithm,
Haar wavelet decomposition,
high order statistics
摘要: 在分析离散Haar小波分解特性的基础上,论证保持其高阶统计特征不变性引理,据此设计一种空域隐写算法,保持了图像Haar小波分解后H、V、D区域的高阶统计特征。该算法使嵌入信息满足不可见性,具有一定抗RS攻击和基于高阶统计特征检测的能力,为构造保持高阶统计特征不变的更一般性隐写算法提供了一种启发式思路。
关键词:
隐写算法,
Haar小波分解,
高阶统计特征
CLC Number:
ZHANG Shi-shu; TANG Guang-ming. Steganograph Algorithm on Preservation of High Order Statistics in Frequency Domain[J]. Computer Engineering, 2008, 34(17): 149-152.
张石树;汤光明. 一种保持频域高阶统计特征不变的隐写算法[J]. 计算机工程, 2008, 34(17): 149-152.