基于内容自适应的实时视频水印算法研究

Research on Real-time Video Watermarking Algorithm Based on Content Adaptation

设计了一种基于内容自适应的实时视频水印算法。该算法使用Arnold变换对原始水印图像进行置乱,能够基于视频内容自适应地将水印图像嵌入到原始视频的每一帧中,且实现了水印图像的盲提取。实验结果表明,该算法具有实时性、不可感知性,对高斯噪声、Speckle及帧裁剪等常规攻击具有较好的稳健性,可以作为一种防插播、防篡改技术应用于数字广播电视领域中。

A content-based adaptive real-time video watermarking algorithm is designed. The Arnold transform is employed to scramble the original watermark image. The algorithm embeds the watermark image into each frame of the original video adaptively based on the video content and realizes the blind extraction. The experimental results show that the proposed algorithm meets the demand of real-time and invisibility, and strong robustness is a- chieved under various traditional attacks, such as Gaussian noise, Speckle and frame cropping. The algorithm can be applied as one of anti-spotstamper -proofing techniques in the field of digital broadcast television.