基于DCT的数字图像水印技术的研究  

Study on Digital Image Watermarking Technology Based on DCT

作　　者：豆根生[1] 昝明睿 林爱英[1] 卢珂[1] 

机构地区：[1]河南农业大学理学院,郑州450002 [2]河南省焦作市第五人民医院信息科,河南焦作454000

出　　处：《河南科学》2014年第5期766-772,共7页Henan Science

基　　金：2013年国家级大学生创新创业训练计划项目(201310466025)

摘　　要：对DCT(离散余弦变换)域的图像水印技术进行了研究,实现了非盲水印和盲水印两种方案.为保证数字水印的安全性,在水印嵌入之前,采用Arnold置乱技术对水印进行预处理.实验结果表明,两种方法都具有较好的不可见性,能够抵御JPEG压缩、剪切和噪声攻击等常用的图像攻击技术,具有较好的鲁棒性,是较为实用的图像水印方案.The image watermark technology was studied based on discrete cosine transform （DCT）. Two kinds of watermarking algorithms such as non-blind watermark algorithm and blind watermark algorithm are completed. To ensure the security of the digital watermarks, the watermark is often scrambled with Arnold scrambling transform before embedded into the original image. The experimental results indicate that both the algorithms are imperceptible and robust to some common attacks such as JPEG compression, image cropping and image noise adding, which are practicable methods for image watermark embedding.

关 键 词：图像水印 ARNOLD置乱 分块离散余弦变换 鲁棒性 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]