| H.264中基于DCT域的视频可控加密研究 |
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| 引用本文： | 韩锐. H.264中基于DCT域的视频可控加密研究[J]. 数字社区&智能家居, 2009, 5(6): 4296-4298 |
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| 作者姓名： | 韩锐 |
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| 作者单位： | [1]合肥工业大学计算机与信息学院,安徽合肥230009 [2]万博科技职业学院,安徽合肥230001 |
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| 基金项目： | 基金项目：国家自然科学基金项目（6047035）;安徽省“十五”二期科技攻关重大计划项目（040020382） |
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| 摘 要： | 提出一种适用于H．264／AVC的DCT系数分层可控加扰算法，按照特定规律修改Intra帧的DCT系数，再利用帧间预测将加扰效果扩散至所有帧。最终实现视频的无级扰乱。实验结果表明，此算法克服以往空间加扰算法造成压缩效率下降的不足，具有很好的加扰效果，适用于H．264／AVC的视频系统中。
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| 关 键 词： | H．264／AVC DCT系数 可控加密 |
H.264 Video Controllable Encryption Research Based on DCT Domain |
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| HAN Rui. H.264 Video Controllable Encryption Research Based on DCT Domain[J]. Digital Community & Smart Home, 2009, 5(6): 4296-4298 |
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| Authors: | HAN Rui |
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| Affiliation: | HAN Rui (1.Department of Computer and Information, Hefei University of Technology,Hefei 230009,China;2.Wanbo Institute of Science and Technology,Hefei 230001,China) |
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| Abstract: | A noVel DCT coefficients layered controllable scrambling algorithm for H.264/AVC. This performs an arbitrarily degraded view of the decoded picture by encrypting DCT coefficients of the Intra frames. Through the prediction, the effects of encrypting Intra frames can be spread in to the whole video sequence. This technique overcomes the draw back of scrambling pixel in spatial domain, which reduces the compressed efficiency of the encoder. Through many experiments, it is proved that the algorithm can achieve good scrambling result and can be applied into the broadcast systems, which used H.264/AVC as compression standard, |
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| Keywords: | H.264/AVC DCT coefficients controllable encryption |
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