摘要
基于整数小波变换和SPIHT搜索小波零树理论,提出一种整数小波零嵌入的多类数字水印算法:将用于版权保护的鲁棒水印进行零嵌入,再将用于数据完整性认证的脆弱水印分别嵌入到小波域不同方向的细节子代中.通过对含水印图像的攻击实验表明,该算法兼具鲁棒性和脆弱敏感性,且篡改定位较精确,水印检测时不需要原始图像的参与,是一种有效的数字图像水印方案.
A multi-type and multiple digital watermarking algorithm is proposed based on integer wavelet transform and chaotic encryption to complete multi-sexual and multi-type of protecting multimedia information.It embeds robust watermarks into low frequency zone and fragile watermarks to different layers progeny details of integer wavelet domain by the quantization method of matrix norm.It doesn＇t need original images to detect watermarks.Attacking experiments show that the algorithm not only has both robustness and fragile sensitivity,but also exactly locates distorted parts.It is an effective watermarking algorithm.
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
2011年第3期312-319,共8页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
教育部春晖计划项目(Z2009-1-01052)
内蒙古自然科学基金项目(2009MS0904)
包头市科学计划项目(2010S2012-1-5-6)
关键词
多类水印
整数小波变换
零嵌入
multi-type and multiple digital watermarks
integer wavelet transform
chaotic encryption
