【摘要】 安全性是图像隐蔽通信应用的前提条件。基于香农信息熵和相对熵的安全约束条件还存在不足,隐藏信息不能抵抗利用图像相关性的密写分析。深入分析了图像相邻像素的相关性,给出了基于像素相关的广义信息熵、相对熵和概率分布。提出了广义信息度量的信息隐藏模型,该模型满足隐藏信息的不可检测性,适应于图像隐蔽通信。给出了安全约束条件和信息隐藏方法,并进行了验证实验,给出了实验数据。实验结果表明,该安全模型具有理论和实用价值。更多还原

【Abstract】 Security is precondition for application of Image Hidden Communication.There is lack of constraint conditions in security based on Shannon information entropy and relative entropy,because of steganalysis by image spatial correlativity.We presented generalized information entropy,relative entropy and probability distribution,by means of analysis for correlativity of adjacency pixels of image.A security model for data hiding based on generalized information measure was proposed.The model is suitable for Image Hidden Communication and the hidden data can’t be detected. Security constraint conditions and a method of steganography were derived,and we gave experimental data to verify the model.The experiment results indicate that the security model has values of theory and application.更多还原