基于图象DCT域的信息隐藏盲提取算法

基于信息隐藏在隐蔽通信等应用中的特点,该文提出了一种新的信息隐藏盲提取算法,该算法根据人眼对图象DCT域的感知特性,对图象的DCT域系数进行特定的量化处理,将秘密数据隐藏在隐秘图象的DCT系数量化结果的奇偶特性上,提取时不需要覆盖图象,实现了秘密数据的盲提取。实验结果表明,该算法不仅能实现盲提取,而且具有较强的鲁棒性。该文提出的盲提取算法还可以应用于JPEG图象中,由于JPEG图象具有有效性高、应用普遍的特点,该算法的这一特性对于提高网络隐蔽通信的效率和隐蔽性具有重要意义。

A Blind Information Hiding Algorithm Based on DCT Domain of Image

Based on the characteristic of secret communication application,this paper proposes a new blind information algorithm.Through a special quantifying process of the image DCT-domain coefficients,the secret data are hidden in the even-uneven identity of DCT quantifying value based on the feeling of the human vision to the DCT-domain.The cover image is not needed when extracting the secret data.The experiment results show that the algorithm is not only blind but also very robust.Furthermore,this algorithm can also be applied in JPEG format image which is very efficient and widely used.This character of the algorithm is very significant for improving the efficiency and security of secret communication.