基于小波域的视频水印技术研究

发布时间：2018-01-09 11:21

本文关键词：基于小波域的视频水印技术研究　出处：《青岛科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着信息技术和互联网的不断发展,视频的版权越来越容易受到侵犯,数字水印技术已成为解决这一问题的一种有效途径。在深入研究当前视频水印技术的基础上,本文提出了一种基于改进JND模型的视频水印方法。首先,本文介绍了视频水印技术的研究背景、意义及国内外研究状况;其次,阐述了视频水印的相关理论,如小波理论、分形理论等;然后在现有的DWT域JND模型的基础上,提出了改进的JND模型;最后,本文提出了一种新的视频水印算法,该方法包括关键帧的提取、水印的预处理、利用改进的JND模型实现水印的嵌入和提取等。随后,为了验证该方法的不可感知性和鲁棒性,我们做了大量的实验;实验结果表明,本文提出的水印算法具有很好的不可见性、安全性和鲁棒性,在该算法的基础上,设计并编制了一个视频分形水印系统。
[Abstract]:With the continuous development of information technology and Internet, more and more vulnerable to video copyright infringement, digital watermarking has become an effective way to solve this problem. Based on a thorough study of the current video watermarking technology, this paper proposes a video watermarking method based on improved JND model. Firstly, this paper introduces on the background of video watermarking, significance and research status at home and abroad; secondly, expounds the related theory of video watermarking, such as wavelet theory, fractal theory; then based on DWT domain JND model on existing and proposed an improved JND model; finally, this paper proposes a new video watermarking the method includes key frame extraction, the pretreatment of watermark, watermark embedding and extraction using improved JND model. Then, in order to verify the method of imperceptibility and robustness, we made a big The experimental results show that the watermarking algorithm proposed in this paper has good invisibility, security and robustness. Based on the algorithm, a video fractal watermarking system is designed and compiled.

【学位授予单位】：青岛科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP309.7

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