摘要
提出了一种用于图像内容认证的半脆弱水印嵌入和提取算法,该算法结合了一种新的人类视觉模型和图像DWT小波分解,提取水印信息时不需要原始载体图像.仿真实验表明,该算法不仅具有较好的透明性,能够抵抗一定的JPEG压缩,而且对恶意篡改有较好的脆弱性.
A new semi-fragile watermarking algorithm for content authentication is proposed in this paper. Based on human visual system （HVS）, the watermark can be adaptively embedded into host image in the wavelet domain by using detail coefficients in our algorithm. The watermark can be extracted without the original host image. Experimental results show that the proposed watermarking scheme has imperceptibility, frangibility and can detect effectively the tampered regions. In addition, it is robust to JPEG compression.
出处
《中国计量学院学报》
2008年第4期333-337,共5页
Journal of China Jiliang University
关键词
脆弱水印
人类视觉系统
高散小波变换
图像认证
fragile watermark
human vision system
discrete warelet transform
content authentication
