视频水印技术在电力系统中的应用

针对电力信息安全领域亟待解决的问题,把数字视频水印技术引入到电力系统中,是一个新的突破。以电力系统中的电量价格的传输问题为例,提出了一种基于三维小波变换的视频水印算法。首先将电量信息进行混沌置乱,并将其二值化,然后利用场景分割技术把视频载体分割成不同的关键镜头,并对这些关键镜头序列做三维小波变换,最后把水印信息自适应地嵌入到三维小波系数上,这样就完成了水印嵌入。利用视频水印技术,可以保护电量信息作为一种机密信息,能够安全地传输,而不会被非法者窃取。通过实验仿真,该算法有很强的保密性和鲁棒性。

Technology of digital video watermarking in electric power system

According to the imperative problems in the field of electric power information security, it is a breakthrough to bring the digital watermark technology to electric power system. In this paper, an algorithm based on 3DWT is proposed and performed on the transmission of the electricity price. After chaotic scrambling, the electricity information turns to binary data and the video segmentation is adopted to divide the carrier into different shot frames. Then, the watermark information is added adaptively to the 3D wavelet coefficients of the video shot, and watermark embedding is finished. Applying the technology of video watermark, electricity price as a secret could transmit safely. It can not be filched by illegality. The experiment results show that this method is quite safe and robust.