摘要： 将采样理论引入作为图象置乱的一种方法,并结合非线性图象变换技术,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。

关键词: 采样, 图象变换, 数字水印

Abstract: In this paper, the sampling theory, combined with the nonlinear image transformation technique, is introduced as a method for image scrambling, providing a means for improving the imperceptibility and robustness of watermark algorithm. Practical examples are presented to illustrate the efficiency of the method.

中图分类号: 

• TP391.4