A novel algorithm of digital watermarking is proposed in this paper based on a new class of orthogonal function system: Matrix transformation is also used in the pre-process and post-process before the embedding and extracting of digital watermarking.
本文提出了一种新的数字水印算法,该算法利用一类新的正交函数系—U系统的基本原理,进行数字水印信息的嵌入。
参考来源 - 基于U系统的数字水印技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Meanwhile, many important complete orthogonal function systems are obtained.
同时，还给出了几组完备的正交函数系。
Empirical orthogonal function (EOF) has been applied in typhoon track forecasting.
自然正交分解(EOF)在台风路径预报中已得到应用。
The field characteristics of PCF are analyzed using the orthogonal function method.
利用正交函数法研究了光子晶体光纤的模场特性。
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