【摘要】 本文将一次U系统的正交函数系应用到商业票据防伪中,给出了一种新的数字水印算法.通过算法设计和仿真实验分析,该数字水印算法对票据防伪具有算法简单易实现,能够抵抗票据的涂抹、裁剪、JPEG压缩、加噪等攻击的特点.可适用于商业票据的防伪和认证.更多还原

【Abstract】 A one degree orthogonal function of U system is applied to the anti-counterfeit of commercial bills,and a novel digital watermarking method is put forward.By designing an algorithm and analyzing experiment results,it is found that the method is easily realizable and fights attacks like daubing,cutting,compression of JPEG and noise-adding.It is suitable for anticounterfeit and authentication of commercial bills.更多还原