摘要
针对彩色图像进行抗几何攻击水印算法研究,利用奇异值的稳定性,结合小波变换理论,给出了一种基于DWT-SVD的抗几何攻击的彩色图像水印算法。该算法将水印信息嵌入在载体图像CIEL*a*b*颜色模型的亮度空间中,并对载体图像进行打印机输出和各种攻击处理;然后,利用TMS320DM642硬件平台实时采集含水印图像,进行水印的检测与提取;最后利用Matlab对采集的载体图像和提取的水印图像进行性能评估。各种实验结果表明,基于DSP实现的本水印算法对抵抗打印扫描过程中的几何攻击具有很好的鲁棒性。
In view of DWT and SVD theory,this paper puts forward an image watermarking algorithm which can resist geometrical attacks and it makes use of the stability of singular value,combined with wavelet transformation theory.This algorithm embeds the watermark information into the brightness space of the carrier image＇s CIEL＊a＊b＊ color model and it does some attack process to the carrier image and prints it out.Then this system captures the watermarked image real-time by use of the TMS320DM642 hardware platform and then does watermark detection and extraction.Last,it evaluates quality of the collected image with watermarked and the extracted watermark image on Matlab.Experimental results show that,this watermarking algorithm has excellent robustness to resist geometric attacks,which realized in DSP hardware platform.
出处
《计算机与数字工程》
2012年第8期74-76,83,共4页
Computer & Digital Engineering
基金
山东省高校科技计划项目(编号:J10LG24)
山东省优秀中青年科学家科研奖励基金项目(编号:BS2010DX026)
中国博士后基金项目(编号:No.20110491613)资助
