摘要
基于奇异值分解在图像处理中的特性,提出了一种鲁棒性较强的图像融合水印算法.再充分利用视觉感知的各种掩蔽特性进行保密信息的嵌入,使水印有很强的不可视性.并且本方案仅选择了中频小波域进行融合,从而提高了对于JPEG压缩,剪切等攻击的抵抗能力.
Based on characteristics of SVD in image processing, a robust image fusion digital watermarking algorithm is proposed in this paper. Taking full advantages of all kinds of masking characteristics of human visual system, the secret information is embedded invisibly. And selecting middle frequency subbands of DWT to fuse will improve the ability of a watermark to resist or survive attacks such as JPEG compression and cutting etc.
出处
《上海师范大学学报(自然科学版)》
2006年第3期30-34,共5页
Journal of Shanghai Normal University(Natural Sciences)
基金
上海市教育委员会科学项目(04DC33)资助
关键词
数字水印
图像融合
奇异值分解
人类视觉系统
离散小波变换
digital watermark
image fusion
singular Value decomposition (SVD)
human visual system ( HVS )
discretewavelet transform(DWT)