摘要
研究了数字水印的基本原理和图像处理的基本知识,基于实现水印安全性,鲁棒性,不可见性的目的,采用一种基于离散余弦变换的鲁棒性水印算法,该算法将图像进行8*8分块后对各块图像进行DCT变换,之后将水印信息嵌入到选取的中频系数之间的关系中。最后,结合仿真实验结果进一步分析和研究,表明本文的水印算法具有较好的不可见性及鲁棒性,可以有效地抵抗各种攻击,如:噪声、滤波、剪切和JPEG压缩等。
In this paper, we study the basic principle of the digital watermark and the basic knowledge of the image processing. Achieve watermark based security, robustness and invisibility purposes, the use of a robust watermark algorithm based on discrete cosine transform, the algorithms to 8＊8 the image block DCT transform on the block after images, watermark information embedding to the selected frequency after relations between coefficient. Finally, the combination of simulation and experimental results for further analysis and study, indicating that this robust Watermarking algorithm with better visibility and can be effective against a variety of attacks, such as： noise, filter, cut, and JPEG compression, and so on.
出处
《电子设计工程》
2013年第5期81-83,共3页
Electronic Design Engineering
基金
江苏科技大学本科生创新计划资助(2012-02)
关键词
信息隐藏
数字水印
DCT
鲁棒性
information hiding
digital watermarking
DCT
robustness
