摘要
基于混沌序列提出了一种空间域上的灰度级盲水印算法.通过引入特征串的概念,算法较好的将空间域上常见的基于位修改和基于块均值的水印算法结合在一起.一系列水印攻击实验表明,该算法对常见的诸如添加噪声,剪切、滤波、JPEG压缩等图像处理都具有较好的健壮性.
A new blind gray-level watermarking algorithm in spatial domain based on chaotic sequences is proposed in this paper. The introduction of the concept of characteristic string, perfectly combines algorithms based on bit-change and algorithms based on block-mean. Experiment results show that the proposed scheme is robust for some image operations such as noise adding, cropping, filtering and Iossy JPEG compression.
出处
《西南民族大学学报（自然科学版）》
CAS
2005年第5期823-827,共5页
Journal of Southwest Minzu University(Natural Science Edition)
基金
国家自然科学基金资助项目(10472091
10332030)陕西省自然科学基金资助项目(2003A03)西北工业大学研究生创业种子基金资助项(Z200572).
关键词
版权保护
灰度级水印
混沌序列
特征串
copyright protection
gray-level watermarking
chaotic sequence
characteristic string
