一种基于提升小波变换的数字图像隐藏方法

Method for image hidding based on lifting wavelet transform

针对人眼的视觉模型和小波包的分频能力,给出一种新的灰度图像数据嵌入方法,嵌入图像可以达到原始载体的1/4,通过调节尺度因子α可使本方法用于数据隐藏和数字水印.此法对一些图像处理(如JPEG压缩等)有一定的鲁棒性.实验结果显示,此法对秘密信息有较好的恢复效果.

Based on human vision and wavelet packets, we gave a method hiding gray digital image. The size of hidden image is 1/4 of that of original image. This method can be applied to both hiding data and digital watermark by choosing an adaptive scale factor and it is robust for some image processing (such as JPEG compressing). From the given examples it is proved that this method is efficient.