基于DCT变换的数字水印算法研究  

Study on Digital Watermark Algorithm Based on DCT

作　　者：赵亮[1] 田维佳[2] 

机构地区：[1]成都中医药大学,成都610075 [2]电子科技大学,成都610054

出　　处：《电脑开发与应用》2012年第11期15-17,共3页Computer Development & Applications

摘　　要：提出了一种基于DCT变换嵌入到图像的中频带水印改进算法。该算法在DCT变换水印算法的基础上,调整DCT对应系数,然后将其嵌入到原始图像的中频系数中。从实验结果来看,该算法真正做到水印的盲监测,实现水印能够抵抗常见的噪声、裁剪、JPEG压缩等攻击,使水印具有较好的不可见性和鲁棒性。A embedded into image watermarking algorithm in the intermediate frequency in DCT was proposed. The algorithm was based on the DCT watermarking algorithm,and the coefficient of the DCT was adjusted and embedded into the intermediate frequency coefficient of the original image. From the experimental results, it was truly successful of the blind detection of the watermark, the watermark can resist the common noise, cropping, JPEG compression and other attacks, so that the watermark had good invisibility and robustness.

关 键 词：离散余弦变换 数字水印 中频 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]