摘要
本文研究了在水印信号预处理中常用的Arnold变换,仿射变换和面包师变换的置乱方法和置乱周期。仿真结果给出了不同尺寸图像的置乱周期,这为根据水印信号大小选择适当的置乱变换提供了依据。
The scrambling algorithms and scrambling period of Arnold transform, Affined transform and Baker transform in digital watermarking signal pretreatment are designed in this thesis. The scrambling periods of different size images provide basis that different watermarking signals select different scrambling transforms.
出处
《科技信息》
2010年第19期90-90,共1页
Science & Technology Information
