摘要
作为版权保护的重要手段,数字水印技术已得到了广泛地研究和应用,但实用的图像数字水印技术不多,特别是可抵抗截图的水印算法不多。文章充分考虑到如今JPEG图像使用的广泛,采用DCT域嵌入水印,并进行抵抗截图设计。实验证明该算法对JPEG压缩、截图、高斯噪声等常见图像处理,具有较好的鲁棒性和不可见性。
As an important mehod to protect the copyright, digital watermarking has been widely researched and used. But practical digital watermarking is not enough, especially withstanding the snapshoting. As we know, JPEG image is widely used, so we embed the watermark in DCT region and design for withstanding the snapshoting. Experimental results show that this algorithm has high robustness and invisibility to common image processing operation such as 3PEG compressing, snapshoting and gaussian noise etc.
出处
《计算机与数字工程》
2009年第4期105-107,177,共4页
Computer & Digital Engineering
关键词
数字水印
DCT变换
实用算法
digital watermarking, DCT transform, practical algorithm
