arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.08566cs.CV
收藏

SqueezeFacePoseNet:面向移动平台的跨姿态轻量级人脸验证

SqueezeFacePoseNet: Lightweight Face Verification Across Different Poses for Mobile Platforms

School of Information Technology, Halmstad University(哈尔姆斯塔德大学信息技术学院);Facephi Biometria(Facephi生物识别公司)

Fernando Alonso-Fernandez, Javier Barrachina, Kevin Hernandez-Diaz, Josef Bigun

AI总结:

本文提出适配仅4.4MB的SqueezeNet模型实现跨姿态轻量级人脸验证,在MS-Celeb-1M和VGGFace2上训练后,在正面与侧面比较中EER为1.23%,正面图像对中EER<0.3%,FAR=0.1%时FRR<1%,并测试了2.5MB的更轻量版本。

摘要:

通过移动平台实现的虚拟应用是人工智能中最关键且不断发展的领域之一,在移动设备提供的各项服务取得突破后,无处不在且实时的人员身份认证变得至关重要。在此背景下,鉴于这些设备配备了摄像头以及在日常应用中的广泛使用,人脸验证技术能够提供可靠且稳健的用户认证。深度卷积神经网络的快速发展催生了许多高精度的人脸验证架构。然而,其典型大小(数百兆字节)使得它们无法被整合到可下载的移动应用中,因为这类应用的整个文件通常不能超过100 Mb。因此,我们致力于解决开发仅有几兆字节的轻量级人脸识别网络这一挑战,使其在与大得多的模型相比时仍能以足够的准确率运行。考虑到移动设备通常在不受控环境中使用时自然存在的变数,该网络还应能在不同姿态下运行。在本文中,我们适配了仅4.4MB的轻量级SqueezeNet模型,以有效提供跨姿态人脸识别。在MS-Celeb-1M和VGGFace2数据库上训练后,我们的模型在困难的正面与侧面比较中实现了1.23%的EER,在侧面与侧面图像比较中实现了0.54%的EER。在涉及注册/查询图像对中任意图像为正面的较小极端变化下,EER降至<0.3%,FAR=0.1%时的FRR降至不到1%。这使得我们的轻量级模型适用于至少可以控制注册图像采集过程的人脸识别场景。以性能轻微下降为代价,我们还测试了一个更轻量的模型(仅2.5MB),其中常规卷积被替换为深度可分离卷积。

英文摘要:

Virtual applications through mobile platforms are one of the most critical and ever-growing fields in AI, where ubiquitous and real-time person authentication has become critical after the breakthrough of all services provided via mobile devices. In this context, face verification technologies can provide reliable and robust user authentication, given the availability of cameras in these devices, as well as their widespread use in everyday applications. The rapid development of deep Convolutional Neural Networks has resulted in many accurate face verification architectures. However, their typical size (hundreds of megabytes) makes them infeasible to be incorporated in downloadable mobile applications where the entire file typically may not exceed 100 Mb. Accordingly, we address the challenge of developing a lightweight face recognition network of just a few megabytes that can operate with sufficient accuracy in comparison to much larger models. The network also should be able to operate under different poses, given the variability naturally observed in uncontrolled environments where mobile devices are typically used. In this paper, we adapt the lightweight SqueezeNet model, of just 4.4MB, to effectively provide cross-pose face recognition. After trained on the MS-Celeb-1M and VGGFace2 databases, our model achieves an EER of 1.23% on the difficult frontal vs. profile comparison, and0.54% on profile vs. profile images. Under less extreme variations involving frontal images in any of the enrolment/query images pair, EER is pushed down to<0.3%, and the FRR at FAR=0.1%to less than 1%. This makes our light model suitable for face recognition where at least acquisition of the enrolment image can be controlled. At the cost of a slight degradation in performance, we also test an even lighter model (of just 2.5MB) where regular convolutions are replaced with depth-wise separable convolutions.

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。

↑