数字水印的一个采样型算法

An information hiding method based on sampling theory

将采样技术引入作为图像置乱的一种方法 ,并结合非线性图像变换技术 ,在计算量增加不大的条件下 ,提出一种改善水印算法不可感知性和顽健性的易于实现的手段 .应用实例表明 ,该方法效果良好 .

The sampling theory combined with the nonlinear image transformation technique is introduced as a method for image scrambling,which provides a means for improving the imperceptibility and robustness of water mark algorithm. Practical examples are presented to illustrate the efficiency of the method.