Implementation of digital watermarking system
Implementation of digital watermarking system
复制标题
数字水印系统的实现
DOI：
10.1109/icce.2003.1218891
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
M. T. Wong
中科院分区：
文献类型：
--
作者：
Yuk Ying Chung;M. T. Wong
在音乐、电影、书籍和软件出版行业，很容易大规模地制作出完美的未经授权的副本。数字水印——带有隐藏序列号的隐藏版权信息——可以作为防止未经授权复制的直接方法。提出了一种基于矢量量化（VQ）和离散余弦变换（DCT）的灰度图像嵌入数字水印系统。与传统的基于DCT的水印系统相比，该系统可以嵌入16倍以上的信息。恢复后的图像峰值信噪比高，视觉质量好。该系统在JPEG压缩和其他信号处理攻击方面都具有鲁棒性。
It is easy to make perfect unauthorised copies on a large scale in the music, film, book and software publishing industries. A digital watermark - a hidden copyright message with hidden serial numbers-can be used as a direct method of preventing unauthorised copying. This paper presents a novel digital watermarking system based on vector quantisation (VQ) and discrete cosine transform (DCT), which can embed a grey level image. The proposed new system can embed 16 times more information than other traditional DCT based watermarking system. The recovered images have high peak signal to noise ratio (PSNR) value and good visual quality. This system is robust in terms of both JPEG compression and other signal processing attacks.