Research on Mask Wearing Detection of Natural Population Based on Improved YOLOv4

Qian Zhang, Bingdian Yang, Zhichao Liu
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Abstract

Recently, the domestic COVID-19 epidemic situation has been serious. At present, the most effective epidemic prevention and control measure is still to wear masks. Therefore, setting up automatic detection devices for wearing masks in public places can better help relevant departments to carry out epidemic prevention and control work. Aiming at the problems of the existing mask detection algorithms, such as low accuracy, poor robustness, and inability to meet the real-time requirements of the proposed method, this paper proposes a new mask wearing detection method based on improved YOLOv4. Specifically, first of all, we add the Coordinate Attention Module to the backbone to coordinate feature fusion and representation. Secondly, we conduct a huge number of network structural improvements to enhance the model's performance and robustness. Thirdly, we deploy the K-means clustering algorithm to make the nine anchor boxes more suitable for our NPMD dataset. The extensive experimental results show that the improved YOLOv4 performs better, exceeding the baseline by 4.06% AP with a comparable speed of 64.37 FPS. It can complete a comprehensive and accurate mask wearing detection task in natural scenes.
基于改进YOLOv4的自然人群口罩佩戴检测研究
近期,国内新冠肺炎疫情形势严峻。目前,最有效的疫情防控措施仍然是戴口罩。因此,在公共场所设置口罩自动检测装置,可以更好地帮助有关部门开展疫情防控工作。针对现有口罩检测算法准确率低、鲁棒性差、不能满足本文方法实时性要求等问题,本文提出了一种基于改进YOLOv4的口罩佩戴检测新方法。具体来说,我们首先在主干中加入坐标关注模块进行坐标特征融合与表示。其次,我们进行了大量的网络结构改进,以增强模型的性能和鲁棒性。第三,我们部署K-means聚类算法,使9个锚盒更适合我们的NPMD数据集。大量的实验结果表明,改进后的YOLOv4性能更好,以64.37 FPS的可比速度比基线高出4.06% AP。可以在自然场景中完成全面准确的口罩佩戴检测任务。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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