摘要
作为知识产权的保护神,数字水印技术的算法理论和实现算法的技术都是当前研究的热门课题.频率域变换抵抗破坏能力较强,是水印的主流;数据置乱决定水印的成败.本文基于频率域DCT变换和密钥分散Arnold置换提出了一种新的水印算法,并给出该算法的Matlab实现方案.结果证明,这种算法达到了很好的透明性和很强的鲁棒性,而且将理论探索和技术实践比较完善地结合起来.
Digital Watermarking has been,and will be the hot field in the knowledge economy and information time.The paper proposes a robust digital watermarking scheme based on DCT and Arnold shuffling technique. The watermark, a meaningful binary image ,is embedded into the magnitude coefficients of the original image which is a gate photo of Nanchang University. After extraction ,it can be recognized even under a severe cropping attack, not to say other minor attacks.
出处
《南昌大学学报（工科版）》
CAS
2005年第1期20-22,39,共4页
Journal of Nanchang University(Engineering & Technology)
关键词
数字水印
算法
鲁棒性
频率域变换
digital watermarking
algorithm
robustness
frequency domain transformation
