摘要
提出了一种基于小波变换(DWT)的盲检测加密水印算法。利用离散小波多分辨率分解技术,在中层小波系数域嵌入图像水印信息。在提取水印时利用了水印图像本身的相关性来提高水印的提取效果。实验结果表明提出的数字水印算法,经某些图像处理操作和JPEG有损压缩后仍是有效的。
A digital watermarking arithmetic based on multiresolution decomposition is proposed. By multiresolution decomposition technique, the watermark image is embedded into the proper coefficient of the decomposed original image. The correlation of the watermark image is contributing in extraction without the original image. Experimental results show that the proposed arithmetic can survive certain general image processing.
出处
《科学技术与工程》
2007年第16期4199-4203,4208,共6页
Science Technology and Engineering
关键词
数字水印
离散小波变换
多分辨
digital watermark
discrete wavelet transform
muhiresolution
