云环境中机房图像目标信息保密性能优化研究

Optimization Research of Room Image Target Information Secrecy Performance in Cloud Environment

在云环境下对机房图像目标信息保密性能进行优化,可提高机房的隐私安全性。对机房图像目标信息保密性能优化的唯一途径就是对机房图像目标信息进行有效隐藏。进行图像信息隐藏时,需要获取加密后的机房信息置乱图像,并在不同时刻对置乱图像进行不断调整,而传统方法是利用从差值直方图中抉择出2个最大峰值点嵌人多位私有信息,实现机房私有图像信息隐藏,但不能对图像进行加密和置乱,导致丢失部分机房图像,降低了机房图像目标信息保密性能。提出一种基于小波域纹理分析的私有信息隐藏方法,对机房图像目标信息保密性能优化。上述方法先利用混沌序列对需要加密的私有信息进行置乱处理,得到加密后的信息置乱图像,并将小波理论思想和人眼视觉(HVS)掩盖效应有机结合,将图像划分不同的类别,以人眼视觉对不同亮度范围产生的视觉敏感性为依据,对不同亮度区域内的私有信息嵌入量进行调整,利用调整的结果完成对云环境下计算机机房私有信息隐藏,完成机房图像目标信息保密性能优化。仿真结果表明,所提方法对计算机机房图像目标信息保密性能高,安全性强,有广泛的应用前景。

In a cloud environment optimize the performance of computer image target information confidential, can improve the privacy security of computer room. Image target information secrecy performance optimization of computer room is the only way of image target information effectively hidden rooms. Image information hiding, need to get the encrypted room information scrambling image, and constantly adjust the scrambling image at different times, the traditional method is to use the choices from the difference histogram two maximum peak point embedding a number of private information, achieve room private image information hiding, but not for image encryption and scrambling, cause the loss of part of the room image, reduces the room image performance target information confidential. Put forward a method based on wavelet domain private information hiding methods of texture analysis, image target information secrecy performance optimization of computer room. The method by using chaotic sequence scrambling for encrypted private information processing, get the encrypted information scrambling image, on the basis of general wavelet theory thought and the organic combination of the human eye visual masking effect （HVS） to divide the image different categories, with human visual sensitivity in different brightness range as the basis, of different brightness to adjust the amount of private information embedded in the region, using the results of the adjustment done on cloud environment computer room private information hiding, complete machine room image target information secrecy performance optimization. Simulation experiments show that the proposed method of computer room room image target information confidential high performance, strong security, have broad application prospects.