遥感影像高逼真度二维信息隐藏盲算法

为实现遥感影像中的机密信息的隐藏,在文后提出了一种高逼真度的遥感影像二维机密信息隐藏盲算法。该算法首先对遥感影像中的机密信息进行分割和提取,然后对遥感影像中提取机密信息后的空白影像块进行灰度补值,制造抹去机密信息后的伪遥感影像;然后借鉴信息隐藏的思想,利用LSB(LeastSignificantBit)算法,将机密影像块加密后以不可见的方式嵌入到伪遥感影像中,从而生成隐藏了机密信息的伪遥感影像;并且该算法在提取机密信息和恢复遥感影像时,不需要原始遥感影像,是一种盲算法。实验结果表明:该算法具有较强的透明性和较大的信息隐藏量,能得到高逼真度的机密信息隐藏伪遥感影像。此外,该算法对隐藏了机密信息后的伪遥感影像的各种应用,如:边缘监测和影像分类等均没有影响。

A Blind Algorithm with High Fidelity for 2-Dimension Secrete Information Hiding in Remote Sensing Image

In order to hide secrete information in remote sensing image,we propose a blind algorithm with high fidelity for2-dimension secrete information hiding of remote sensing image.Firstly,we segmente and extracte the secrete infor-mation from remote sensing image,and make gray value supplement in the area corresponding with the secrete informa-tion and then produce the disguised remote sensing image which has been wiped off the secrete information.Then we use for reference the idea of information hiding and exploite the LSB(Least Significant Bit)algorithm to embed the en-crypted secrete sub-image imperceptibly into the disguised remote sensing image to produce the disguised one in which the secrete sub-image is hid.In addition,during the course of extracting secrete information and resuming the remote sensing image,this algorithm don't need the original remote sensing image and is a blind one.And experimental results show that this algorithm is quite transparent and has a good effect for large amount of secrete information hiding and can produce the disguised remote sensing image of high fidelity with the hidden secrete information.Furthermore this al-gorithm has no influence on various applications of the disguised remote sensing image such as edge detection and im-age classification in which the secrete information has been hidden.