Safety Helmet-Wearing Detection System for Manufacturing Workshop Based on Improved YOLOv7

Author:

Chen Xiaowen12ORCID,Xie Qingsheng1ORCID

Affiliation:

1. Key Laboratory of Advanced Manufacturing Technology, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China

2. School of Biology and Engineering, Guizhou Medical University, Guiyang, Guizhou 550025, China

Abstract

Safety helmets play a vital role in protecting workers’ heads. In order to improve the accuracy of the detection model in complex environments, such as complex backgrounds and different lighting and distances, we propose a safety helmet-wearing detection algorithm based on the improved YOLOv7. In the backbone network, 16-channel features are used to replace 3-channel RGB features. Structured pruning is performed in the head network, and the loss function is replaced by SIoU. Experiments on the “helmet-head,” “helmet-data,” and “helmet” data sets show that the mAP and F1 of YOLOv7_ours improved in this paper are better than Faster RCNN, YOLOv5, and YOLOv7 series models. On image data of different application scenarios, light intensity, and color depth, YOLOv7_ours has better stability and higher accuracy and can detect at 112.4FPS (1000/8.9). Based on the improved YOLOv7_ours, we integrated face recognition technology and text-to-speech (TTS) to realize helmet detection, identity recognition, and automatic voice reminder capabilities and developed a safety helmet-wearing detection prototype system. We verified the feasibility of the helmet detection algorithm and system in the semifinished product manufacturing workshop.

Funder

Science and Technology Program of Guizhou Province

Publisher

Hindawi Limited

Subject

Electrical and Electronic Engineering,Instrumentation,Control and Systems Engineering

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