基于位平面无损压缩的密文域可逆信息隐藏

针对密文域可逆信息隐藏算法中嵌入率不高,可逆性不强,鲁棒性差的问题,提出一种密文图像位平面无损压缩的可逆信息隐藏算法。首先介绍二进制数据位压缩编码方式,使用该方式将低位平面信息存储于压缩后的高位平面中。而后加密图像,采用比特替换的方式在低位平面嵌入秘密信息,最后按位重组图像。接收方提取秘密信息和恢复图像的操作相互独立。实验证明,该算法具有较高的嵌入率,可逆恢复的载体图像质量较好,能够有效抵抗一定程度的噪声及数据丢失攻击。

Reversible Information Hiding of Encrypted Domain Based on Bit - plane Lossless Compression

Focus on the problem that the embedding rate is insufficient, the reversibility is not strong and the robustness is poor, a reversible information hiding algorithm for bitless loss of bit image is proposed. First introduce the binary data bit compression coding theory, use this way to store the low level information in the compressed high plane. And then encrypt the image, the use of bit replacement in the low-level plane embedded secret information, and finally bit by bit reorganization of the image. The receiver extracts the secret information and restores the images independently of each other. Experiments show that the algorithm has high embedding rate, and the vector image of reversible recovery is better, and it can effectively resist a certain degree of noise and data loss attack.