数字图像变换及信息隐藏与伪装技术

DIGITAL IMAGE TRANSFORMATION AND INFORMATION HIDING AND DISGUISING TECHNOLOGY

本文讨论的是数字图像变换及其在信息安全中的应用．首先介绍置乱变换，并提出按空间填充曲线、Arnold变换、幻方的图像置乱算法；其次介绍图像分存并提出了将灰度和彩色图像在计算机上进行分存和恢复的方法．

This paper discusses about digital image transformation and its application in informationsecurity. At first, the image scrambling transformation are introduced, and space-filling curves,Arnold transformation, magic square scrambling algorithms are presented ; then the image visual secret sharing technology is introduced, and methods to share and recover gray-scale image and colorimage on computer are presented.