摘要
阐述了数字水印在彩色图像合并操作下的应用,考虑了JPEG2 0 0 0有损压缩的影响,提出了一种对JPEG2 0 0 0和JPEG有损压缩、图像剪切、合并操作具有强鲁棒的水印算法试验证明,该算法对彩色图像转换到灰度图像、对JPEG2 0 0 0高达1∶5 0的压缩比、任意数量的图像合并、不超过5 0 %的剪切以及噪声攻击具有较强的鲁棒性。
Taking into account lossy compression JPEG2000, a strongly robust watermark algorithm is proposed which can resist JPEG2000 and JPEG lossy compression as well as prevent image uniting and cutting. Test results show the algorithm is robust in the case of color image changed to gray image, JPEG2000 1∶50 lossy compression, arbitrary images uniting, image cutting less than 50% and additive noise attack. The extracting watermark can be identified better.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2005年第5期1107-1113,共7页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金 ( 60 3 72 0 94
90 2 0 40 17)
国家重点基础研究计划 (G19990 3 5 80 4)
