利用Arnold对称性变换的图像信息隐藏算法

A Digital Image Hiding Algorithm Using Arnold Transform

提出了一种利用Arnold对称性变换的图像信息隐藏算法 .待隐藏的秘密信息以及公开的承载信息均为灰度级静止图像 .首先使用图像置乱技术将秘图变换成无意义的图像 ,同时用一个数值控制置乱的次数 ,并在嵌入和提取时作为密钥 .在此基础上 ,将密图嵌入到承载图像的DCT域系数中 .该算法实现的隐藏图像透明性好 。

This paper presents an image hiding algorithm using Arnold transform. The secret message and the host message are all still gray_images. The digital image is first transformed into a worthless image and a key is used to control the scrambling numbers. DCT is applied in the original image. Then the secret image is embedded into the DCT coefficients. Experimental results show that this algorithm can get a watermarked image with perceptual invisibility and certain robust.