Detection of Transcoding from H.264/AVC to HEVC Based on CU and PU Partition Types

Detection of Transcoding from H.264/AVC to HEVC Based on CU and PU Partition Types
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基于CU和PU分区类型的H.264/AVC到HEVC转码检测

DOI:
10.3390/sym11111343
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发表时间:
2019-11
期刊:
symmetry
影响因子:
--
通讯作者:
Yan Huanma
Yan Huanma
中科院分区:
其他
文献类型:
--
作者:
Zhang Zhenzhen;Liu Changbo;Li Zhaohong;Yu Lifang;Yan Huanma

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高效视频编码(HEVC)是一种全球流行的视频编码标准,具有很高的编码效率。为了赚钱,造假者更喜欢将视频从H.264/AVC等以前的标准转码为HEVC。为了解决这一问题,提出了一种基于编码单元(CU)和预测单元(PU)划分类型的高效转码HEVC视频曝光方法。CU和PU分区是HEVC的两个独特的语法单位,可以反映视频的压缩历史。本文首先提取了I图和P图的CU和PU分割类型。然后,计算它们的平均频率,并将其拼接成区分特征,然后将这些特征送入支持向量机进行分类。实验结果表明,该方法对转码后的HEVC视频具有较高的识别准确率,并且对帧删除和GOP结构攻击具有较强的鲁棒性。
High Efficiency Video Coding (HEVC) is a worldwide popular video coding standard due to its high coding efficiency. To make profits, forgers prefer to transcode videos from previous standards such as H.264/AVC to HEVC. To deal with this issue, an efficient method is proposed to expose such transcoded HEVC videos based on coding unit (CU) and prediction unit (PU) partition types. CU and PU partitioning are two unique syntactic units of HEVC that can reflect a video’s compression history. In this paper, CU and PU partition types of I pictures and P pictures are firstly extracted. Then, their mean frequencies are calculated and concatenated as distinguishing features, which are further sent to a support vector machine (SVM) for classification. Experimental results show that the proposed method can identify transcoded HEVC videos with high accuracy and has strong robustness against frame-deletion and shifted Group of Pictures (GOP) structure attacks.
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