一种基于FFMPEG系统的视频水印算法

提出一种基于FFMPEG系统的MPEG-2视频水印算法,解决了视频水印中不可避免的视频编解码问题。将水印图像和水印属性转成二进制比特流,作为嵌入视频的水印信息,提取时不需预知水印的尺寸信息就能恢复。同时在每个嵌入帧的起始部位嵌入标志序列,识别已嵌入水印的帧提取水印,而无需重新进入编码过程。实验结果表明,这种方案实现便捷,省时高效,且具有较好的不可见性和鲁棒性。

Binary Image Watermarking Algorithm Using Matrix of Complexity Index

A new watermarking algorithm of binary image is proposed.The complexity index of pixels is presented to reflect the change degree of pixels and to evaluate the modifiable degree of pixels.Firstly, in a small image block, the complexity index of"jumping-change"is calculated in vertical and horizontal direction.Secondly, the matrix of the complexity index is calculated by integrating the complexity index of pixels in two directions.Finally, the matrix of the complexity index is used to embed the watermark in binary images.Experimental results show that the proposed algorithm has a good performance.