傅里叶相位图水印隐藏的实现与应用

Implementation and Applications of Fourier Phase Image Digital Watermarking Hiding

采用待隐藏图像的相位图作为数字水印嵌入宿主图像,实现了信息隐藏,与隐藏图像同时具有振幅信息和相位信息的情况比较,需要隐藏的信息量显著降低。相应的水印提取数据仅是图像的相位信息,并将提取出的傅里叶相位图像与一幅新图像的傅里叶振幅图像结合,原始隐藏图像被恢复,验证了图像的相位的主导性,且运用这种特性可有效地实现信息的隐藏与恢复。利用图像所具有的迷惑性产生的信息隐藏更能起到掩护的作用。

Used the Fourier phase of to be hidden image as a digital watermarking embedded in a host image,implemented information hiding.In comparison with hidden image consists of amplitude and phase information,the need to hide the amount of information is greatly reduced.The corresponding extracted data only is phase information,this phase and another unrelated Fourier amplitude image are used to reconstruct the original hidden image,which verifies the phase dominance,and using this property can effectively implement information hiding and reconstruction.The way of using delusion of digital image for data hiding can play better protective role.