摘要
经对目前数字水印变换域算法的研究,发现常用的变换大多都是正交变换(如DCT和DWT等)。通过对Walsh正交函数系的研究,获得了与之对应的性能优良的正交变换,提出一种新颖的、鲁棒的Walsh域盲水印算法。实验表明,该算法计算简单,且具有良好的不可见性,并且在抵抗噪声和JPEG压缩攻击等方面具有较强的鲁棒性。
Of all popular algorithms of transform domain,found most transformations to be orthogonal transformations（such as DCT and DWT）.Selected Walsh transformation with excellent performance by studying Walsh function system.Finally,proposed a digital watermarking algorithm based on Walsh transformation.Experimental results show that the simple algorithm is good at perceptual transparency as well as robustness against noise and JPEG compression.
出处
《计算机应用研究》
CSCD
北大核心
2010年第7期2654-2656,2660,共4页
Application Research of Computers
基金
国家"十一五"科技支撑计划项目(2006BAF01A21)
甘肃省自然科学基金资助项目(3ZS062-B25-037)
关键词
数字水印
WALSH变换
digital watermarking
Walsh transformation
