| 基于MPEG-4的视频水印技术的设计方法 |
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| 引用本文： | 邓华,张继夫.基于MPEG-4的视频水印技术的设计方法[J].计算机与现代化,2010(6):67-70. |
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| 作者姓名： | 邓华 张继夫 |
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| 作者单位： | 1. 空军航空大学计算机教研室,吉林,长春,130022
2. 空军航空大学军事仿真技术研究所,吉林,长春,130022 |
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| 摘 要： | 针对较大容量的版权信息以及MPEG-4压缩格式下的视频水印强鲁棒性的需求,提出一种基于DCT（Discrete Cosine Transform,离散余弦变换）域的MPEG-4视频水印技术的设计方法。该方法综合小波变换、混沌理论及扩频技术对灰度水印图像进行预处理,并根据图像纹理特征复杂情况选择水印的嵌入域,采用改进后的LSB算法将水印信息嵌入到部分解码的MPEG-4视频I-VOP的色度子块的DCT直流系数（DC）中。实验证明,该方法保证了在视频效果不失真的前提下,水印具有很强的鲁棒性。
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| 关 键 词： | 视频水印 MPEG-4 DCT 版权信息 鲁棒性 |
Design Method of Video Watermark Technology Based on MPEG-4 |
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| DENG Hua,ZHANG Ji-fu.Design Method of Video Watermark Technology Based on MPEG-4[J].Computer and Modernization,2010(6):67-70. |
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| Authors: | DENG Hua ZHANG Ji-fu |
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| Affiliation: | 1. Department of Computer/a>;Air Force Aviation University/a>;Changchun 130022/a>;China/a>;2. Institute of Military Simulation Technology/a>;China |
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| Abstract: | Aiming at the requirements of the copyright information required high capacity and the strong robustness based on MPEG-4,a method of video watermarking which is based on DCT domain in MPEG-4 is proposed. The algorithm synthesizes wavelet transforms,chaos theory and spread frequency technology to do the watermarking pretreatment,and chooses the watermarking embedded domain according to the texture characters of video images. The algorithm,which used for reference of the idea of LSB algorithm,embeds the water... |
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| Keywords: | video watermarking MPEG-4 DCT copyright information robustness |
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