一种基于小波变换的信息隐含技术

给出了基于小波变换的图像处理技术。对图像数据先进行二维离散小波变换,根据小波变换后高、低频分量的特点,用数据隐含技术将加密信息隐藏在小波变换图像的高频部分。这种基于小波变换后的图像,几乎没有附加传输信息量。

Technology of Data Conceal Based on Wavelet Transform

This paper proposes one kind of image process technology based on wavelet transform. First, image data are processed by 2-dimension dispersed wavelet transform. According to the characteristics of high-frequencyand low-frequency, some other information are hidden into the two lowest bitsof high-frequency, which is called data conceal. Because this method is basedon image data processed by wavelet transform, there are approximately no other additional information.