摘要
在有限脊波变换域提出了一种版权保护方案。怎样选择适合嵌入水印数据的FRIT系数是一个有待探讨的问题。以往的算法凭经验确定,缺少理论分析。采用软门限的方法,确定适合隐藏水印的FRIT系数,估算了FRIT系数的噪声可见性,自适应地嵌入水印信息。实验表明该算法具有很强的稳健性和不可见性。
A scheme about copyright protection is proposed in finite ridgelet domain.How to select the finite ridgelet transform(FRIT) coefficients suitable to embed watermark data are short of study.Choice of coefficients is often determined by experiments,and it is lack of mathematical analysis.The FRIT coefficients suitable to embed watermark is determined by adopting soft-threshold,and the noise visibility of the FRIT coefficients is estimated.Watermark is embedded adaptively.Robustness and transparency are proven by experimental results.
出处
《电视技术》
北大核心
2010年第S1期188-191,共4页
Video Engineering
关键词
数字水印
有限脊波变换
噪声可见性控制
digital watermark
finite ridgelet transform
noise visible control
