一种基于混沌加密的视频水印方法

利用二维混沌流加密技术加密有意义的二进制图像,获得水印数据,以提高视频水印的安全性。水印嵌入过程中,水印被嵌入到随机选择的视频帧的离散余弦变换系数里。在鲁棒性和帧平均攻击实验后,大部分水印可以通过水印检测提取算法进行提取和识别。实验结果表明,这种视频水印方法具有一定的安全性、隐蔽性和鲁棒性。

A Video Watermarking Method Based on Chaotic Encryption

An effective and integrated video watermark scheme mainly includes watermark generation,watermark embedding,watermark detecting,and watermark attack.The watermark data come from a meaningful binary image encrypted by two-dimensional chaotic stream encryption to improve watermark security.In the procedure of watermark embedding,watermarks are embedded into the random selected video frames through modifying the DCT coefficients.After robust and frame processes,watermarks can be mainly extracted and identified through watermark extracting algorithm.The experimental results show that the proposed video watermark method has some performances of security,imperceptibility and robustness.