摘要
随着网络技术的迅速发展和视频压缩标准的不断提高,数字水印技术已经成为一种数字产品知识产权保护的有效方法。由于目前存在的视频流水印技术多数不具有实时嵌入的特性,针对视频流的实时性要求高问题,提出了一种基于AC系数嵌入的视频流水印算法。通过对水印进行二维Arnold图像置乱,然后通过计算视频帧的像素亮度值和纹理的均匀度把水印信息嵌入到量化后AC系数中,水印的提取和检测不需要原始视频流信号,具有盲检测性。算法实现简单,可满足实时性要求。实验结果表明,水印方案能有效的抵抗旋转,平移等基本几何攻击,有较好的安全性,并且对于帧剪切、帧丢失以及有损压缩等具有很好的鲁棒性。
With the rapid development of network technologies and the continuous improvement video compression standards, digital watermarking technology has become a kind of effective method to protect digital product intellectual property rights. Because the majority of existing video watermarking technique do not have the characteristics of real - time embedding, for the new features of H. 264/AVC coding standard and the copyright protection of digital video streaming, this article introduced a video watermark algorithm based on AC coefficient embedding. This paper first carried out two - dimensional Arnold image scrambling. Then, embedded the watermark into AC coefficient quantized according to analysis the video frame pixel luminance and uniformity of texture. The detection does not require original video sequence, so this algorithm is blind detection. The algorithm is simple and meets real - time requirement. The experimental results show that this watermark scheme can effectively resist the rotation, translation and other basic geometric attack. Moreover it can resist lossy compression and frame cropping, frame lost, it gets better security and robustness.
出处
《计算机仿真》
CSCD
北大核心
2010年第6期155-158,共4页
Computer Simulation
关键词
视频流水印
交流系数
实时性
视频编码
Video streaming watermark
AC coefficients
Real - time
Video coding
