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arXiv 2112.00568cs.CV
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基于深度不确定性学习的人脸反欺骗双重欺骗解纠缠生成

Dual Spoof Disentanglement Generation for Face Anti-spoofing with Depth Uncertainty Learning

Shanghai University(上海大学);JD AI Research(京东人工智能研究院)

Hangtong Wu, Dan Zen, Yibo Hu, Hailin Shi, Tao Mei

摘要:

人脸反欺骗(FAS)在防止人脸识别系统遭受呈现攻击方面起着至关重要的作用。现有的人脸反欺骗数据集缺乏多样性,由于身份不足和不显著的方差,这限制了FAS模型的泛化能力。在本文中,我们提出了双重欺骗解纠缠生成(DSDG)框架来解决这个挑战,通过“反欺骗通过生成”。根据变分自编码器(VAE)中的可解释的因子分解潜在解纠缠,DSDG学习潜在空间中的身份表示和欺骗模式表示的联合分布。然后,可以从随机噪声中生成大规模成对的实时和欺骗图像,以提高训练集的多样性。然而,由于VAE的固有缺陷,一些生成的人脸图像部分失真。这样的噪声样本很难预测精确的深度值,因此可能会阻碍广泛使用的深度监督优化。为了解决这个问题,我们进一步引入了一个轻量级的深度不确定性模块(DUM),它通过深度不确定性学习来消除噪声样本的不利影响。DUM是在没有额外依赖的情况下开发的,因此可以灵活地与任何深度监督网络集成,用于面部反欺骗。我们评估了所提出的方法的有效性五个流行的基准,并达到国家的最先进的结果下,内部和内部测试设置。这些代码可在https://github.com/JDAI-CV/FaceX-Zoo/tree/main/addition_module/DSDG上获得。

英文摘要:

Face anti-spoofing (FAS) plays a vital role in preventing face recognition systems from presentation attacks. Existing face anti-spoofing datasets lack diversity due to the insufficient identity and insignificant variance, which limits the generalization ability of FAS model. In this paper, we propose Dual Spoof Disentanglement Generation (DSDG) framework to tackle this challenge by "anti-spoofing via generation". Depending on the interpretable factorized latent disentanglement in Variational Autoencoder (VAE), DSDG learns a joint distribution of the identity representation and the spoofing pattern representation in the latent space. Then, large-scale paired live and spoofing images can be generated from random noise to boost the diversity of the training set. However, some generated face images are partially distorted due to the inherent defect of VAE. Such noisy samples are hard to predict precise depth values, thus may obstruct the widely-used depth supervised optimization. To tackle this issue, we further introduce a lightweight Depth Uncertainty Module (DUM), which alleviates the adverse effects of noisy samples by depth uncertainty learning. DUM is developed without extra-dependency, thus can be flexibly integrated with any depth supervised network for face anti-spoofing. We evaluate the effectiveness of the proposed method on five popular benchmarks and achieve state-of-the-art results under both intra- and inter- test settings. The codes are available at https://github.com/JDAI-CV/FaceX-Zoo/tree/main/addition_module/DSDG.

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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