摘要
提出了一种基于三维小波变换的视频水印算法。算法以二值图像作为水印,并利用了三维小波变换和图像融合技术。首先对水印图像进行置乱预处理以增强其安全性;然后对宿主视频进行视频分割,提取视频关键帧,再将要加入水印的视频关键帧图像与水印图像均进行小波变换,并采用图像融合技术以及分块方法和重复嵌入,大大增强了水印的鲁棒性。
An effective video watermark algorithm is put forward by using the visible binary image as watermark based on three-dimensional discrete wavelet transform and image fusion.Firstly,the watermark image is pre-processed by using pseudorandom permutation.The video sequence is divided into video shots.Then,original watermark image is divided up video frame and pick up key frame,video key frame that will embed watermark image and watermark image carry through wavelet transform as well,and we also employ the multivesolution fusion techniques of the image and adopt the divided method for repeat embeds.
出处
《微计算机信息》
2011年第5期174-176,共3页
Control & Automation
关键词
视频水印
小波变换
人类视觉系统
图像融合
鲁棒性
video watermark
wavelet transformation
human visual system
image fusion
obustness
