arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.03922cs.CV
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人脸反欺骗中的广义欺骗线索学习

Learning Generalized Spoof Cues for Face Anti-spoofing

Baidu Inc.(百度公司);Beihang University(北京航空航天大学)

Haocheng Feng, Zhibin Hong, Haixiao Yue, Yang Chen, Keyao Wang, Junyu Han, Jingtuo Liu, Errui Ding

摘要:

许多现有的人脸反欺骗(FAS)方法侧重于对某些预定义欺骗类型的决策边界进行建模。然而,欺骗样本的多样性,包括未知的阻碍了有效的决策边界建模,导致泛化能力弱。在本文中,我们重新制定FAS在异常检测的角度来看,并提出了一个剩余学习框架来学习的歧视性活欺骗的差异,被定义为欺骗线索。该框架由一个欺骗线索生成器和一个辅助分类器组成。该生成器最大限度地减少了实时样本的欺骗线索,同时对欺骗样本的欺骗线索没有明确的约束,从而很好地推广到不可见的攻击。通过这种方式,异常检测被隐式地用于指导欺骗线索生成,从而导致区分性特征学习。辅助分类器充当欺骗提示放大器,并使欺骗提示更具区分性。我们进行了大量的实验,实验结果表明,该方法始终优于国家的最先进的方法。该代码将在https://github.com/vis-var/lgsc-for-fas上公开发布。

英文摘要:

Many existing face anti-spoofing (FAS) methods focus on modeling the decision boundaries for some predefined spoof types. However, the diversity of the spoof samples including the unknown ones hinders the effective decision boundary modeling and leads to weak generalization capability. In this paper, we reformulate FAS in an anomaly detection perspective and propose a residual-learning framework to learn the discriminative live-spoof differences which are defined as the spoof cues. The proposed framework consists of a spoof cue generator and an auxiliary classifier. The generator minimizes the spoof cues of live samples while imposes no explicit constraint on those of spoof samples to generalize well to unseen attacks. In this way, anomaly detection is implicitly used to guide spoof cue generation, leading to discriminative feature learning. The auxiliary classifier serves as a spoof cue amplifier and makes the spoof cues more discriminative. We conduct extensive experiments and the experimental results show the proposed method consistently outperforms the state-of-the-art methods. The code will be publicly available at https://github.com/vis-var/lgsc-for-fas.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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