| 数字视频广播中的压缩域水印算法 |
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| 引用本文： | 邵亚非,吴国威,张利,林行刚. 数字视频广播中的压缩域水印算法[J]. 电子学报, 2003, 31(10): 1562-1565 |
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| 作者姓名： | 邵亚非 吴国威 张利 林行刚 |
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| 作者单位： | 清华大学电子工程系,北京 100084 |
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| 摘 要： | 本文对数字视频广播中的水印技术进行了研究,提出了一种MPEG2码流域的视频水印算法,考虑人眼视觉特性,通过对特定位置DCT系数进行修改,以实现水印的嵌入.并且根据视频帧的不同特性,实现了检测阈值的动态选取.本文的方法,计算复杂度低,易于实现,并具有较高的鲁棒性,能够应用于拷贝控制,用户追踪等场合.
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| 关 键 词： | 数字视频广播 数字水印 版权保护 |
| 文章编号： | 0372-2112(2003)10-1562-04 |
| 收稿时间： | 2001-12-22 |
Compressed Domain Watermarking Algorithm in Digital Video Broadcasting |
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| SHAO Ya fei,ZHANG Li,WU Guo Wei,LIN Xing gang. Compressed Domain Watermarking Algorithm in Digital Video Broadcasting[J]. Acta Electronica Sinica, 2003, 31(10): 1562-1565 |
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| Authors: | SHAO Ya fei ZHANG Li WU Guo Wei LIN Xing gang |
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| Affiliation: | Dept of Electronic Engineering,Tsinghua University,Beijing 100084,China |
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| Abstract: | In order to deal with the copyright issues in DVB environment,a MPEG domain watermarking algorithm is proposed here.The watermark is embedded by modulation of corresponding DCT coefficients according to human visual system.The threshold of the detection correlator is dynamically adjusted along the time axis to fit the frame characteristics.The proposed method is of low complexity and easy to be implemented in terminal consumer electronics devices.It has enough robustness in the copy control and user tracing scenarios. |
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| Keywords: | digital video watermarking digital watermarking copyright protection |
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