Detection of Double Compression for HEVC Videos With Fake Bitrate

Detection of Double Compression for HEVC Videos With Fake Bitrate
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假比特率 HEVC 视频双重压缩检测

DOI:
10.1109/access.2018.2869627
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发表时间:
2018-09
期刊:
影响因子:
3.9
通讯作者:
Zhang Zhenzhen
Zhang Zhenzhen
中科院分区:
计算机科学3区
文献类型:
--
作者:
Liang Xiaoyun;Li Zhaohong;Yang Yiyuan;Zhang Zhenzhen

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比特率是数字视频质量的重要标准。伪造者更喜欢在根本不提高视频质量的情况下上转换视频的比特率,特别是对于互联网上的视频。因此,提出一种有效的算法来揭露假比特率视频成为数字视频取证中的一个重要问题。本文提出了一种基于预测单元(PU)分区类型的新方法来检测具有假比特率的高效视频编码(HEVC)视频。 PU分区类型是HEVC的一种独特的语法单元,可以通过压缩历史来反映,但在假比特率检测主题中尚未得到解决。所提出的方法采用支持向量机分类器,其特征向量由每组图片(GOP)中的第一个P帧中的PU分区类型的直方图形成。该算法的性能与各种分辨率和比特率视频上最先进的算法进行了比较。实验结果表明,该方法能够高精度地识别假码率视频,并且对帧删除、复制粘贴和移位GOP结构攻击具有鲁棒性。
Bitrate is an important criterion for digital video quality. Forgers prefer to up-convert bitrate of videos without improving the video quality at all, especially for videos over the Internet. Therefore, proposing an effective algorithm to expose fake bitrate videos becomes an important issue in digital video forensics. In this paper, a novel method based on prediction unit (PU) partition types is proposed to detect high efficient video coding (HEVC) videos with fake bitrate. PU partition type is one unique syntactic unit of HEVC and could be reflected by compression history, while it has not been addressed in the topic of fake bitrate detection. The proposed method adopts support vector machine classifiers with feature vectors formed by histograms of PU partition types in the first P-frame in each group of pictures (GOPs). The performance of the algorithm is compared with state-of-the-art algorithms on videos of various resolutions and bitrates. The experimental results show that the proposed method can identify the fake bitrate videos with high accuracy, and is robust to frame-deletion, copy-paste, and shifted GOP structure attacks.
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发表时间: 2016-03
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