基于FPGA的实时数字视频水印设计与实现

Design and Implementation of Real-time Digital Image Watermarking based on FPGA

多媒体通信的发展使得数字水印技术作为版权保护的重要手段备受大众关注,本文提出了一种基于离散余弦变换的新型数字水印方法。论文阐述了新型数字水印的原理,搭建了基于FPGA的实时数字视频水印的硬件系统。研究结果表明,与基于软件的数字水印处理相比,基于FPGA的数字水印处理技术具有更高的安全性、隐蔽性和鲁棒性;与已有的数字水印方法相比,新型数字水印方法处理速度明显提升,实现了能够对视频进行实时水印处理,并可实现不同视频播放环境下水印的盲检测,为视频的版权保护提供了有效的解决方案。

The development of multimedia communication makes digital watermarking technology for copyright protection as an important part with much public concern. This paper proposes a new digital watermarking method based on discrete cosine transform. The paper describes the principle of the new digital watermarking, and built a hardware system based on FPGA for real-time digital video watermarking. The research results show that compared with software-based digital watermarking, FPGA-based digital watermarking technology has higher security, concealment and robustness. Compared with the existing digital watermarking method, the processing speed of the new digital watermarking method is obviously improved, realizing real-time watermark processing on video. It can realize blind detection of watermarks in different video playback environments, providing an effective solution for video copyright protection.