论文标题
BWCFACE:使用身体磨损相机的开放式面部识别
BWCFace: Open-set Face Recognition using Body-worn Camera
论文作者
论文摘要
在过去十年中,随着计算机视觉达到拐点,面部识别技术在警务,情报收集和消费者应用方面普遍存在。最近,面部识别技术已被部署在Bodyworn相机上,以确保人员安全,从而使情境意识并提供了审判证据。但是,使用样本量较小的数据集上的传统技术对该主题进行了有限的学术研究。本文旨在使用Bodyworn相机(BWC)弥合最先进的面部识别的差距。为此,这项工作的贡献是两个方面的:(1)收集一个名为BWCFACE的数据集,该数据集由132个受试者的178k面部图像组成,这些受试者在室内和日间条件下使用型型摄像机捕获,以及(2)对基于五个不同的构建功能的最新汇总神经网络(CNN)识别功能的开放式评估,以识别五个不同的识别功能。我们的BWCFACE数据集中的实验结果表明,当使用在大型VGGFACE2面部图像数据集中训练的SENET-50提取面部特征时,最多可获得33.89%的等级1精度。但是,当预估计的CNN型号在我们的BWCFACE数据集中的一部分标识子集上进行微调时,性能提高了最高99.00%的排名1精度。在现有面部数据集中使用的杂交相机传感器模型中获得了同等性能。收集的BWCFACE数据集和验证/微调算法可公开使用,以促进该领域的进一步研究和开发。该数据集和算法的可下载链接可以通过联系作者获得。
With computer vision reaching an inflection point in the past decade, face recognition technology has become pervasive in policing, intelligence gathering, and consumer applications. Recently, face recognition technology has been deployed on bodyworn cameras to keep officers safe, enabling situational awareness and providing evidence for trial. However, limited academic research has been conducted on this topic using traditional techniques on datasets with small sample size. This paper aims to bridge the gap in the state-of-the-art face recognition using bodyworn cameras (BWC). To this aim, the contribution of this work is two-fold: (1) collection of a dataset called BWCFace consisting of a total of 178K facial images of 132 subjects captured using the body-worn camera in in-door and daylight conditions, and (2) open-set evaluation of the latest deep-learning-based Convolutional Neural Network (CNN) architectures combined with five different loss functions for face identification, on the collected dataset. Experimental results on our BWCFace dataset suggest a maximum of 33.89% Rank-1 accuracy obtained when facial features are extracted using SENet-50 trained on a large scale VGGFace2 facial image dataset. However, performance improved up to a maximum of 99.00% Rank-1 accuracy when pretrained CNN models are fine-tuned on a subset of identities in our BWCFace dataset. Equivalent performances were obtained across body-worn camera sensor models used in existing face datasets. The collected BWCFace dataset and the pretrained/ fine-tuned algorithms are publicly available to promote further research and development in this area. A downloadable link of this dataset and the algorithms is available by contacting the authors.