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Application of 3D vision technology in epidemic prevention and control

Author: huifan   Time: 2020-03-09

Relying on the rich features of 3D data, it is possible to achieve accurate comparison of large warehouses, and the number of base warehouses can be further expanded to cover the city's mobile and resident population, so as to achieve "no dead ends". In addition, for serious obstructions such as wearing a mask, hat, and protective glasses, the algorithm has been optimized to achieve a recognition accuracy of 97%.
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 In January 2020, a new coronavirus broke out in Wuhan, Hubei, and continued to spread. Wenzhou City, Zhejiang Province has a resident population of nearly 10 million, an active economy and a large floating population. The epidemic prevention work is facing severe challenges. The local government and related departments have actively responded to the epidemic battle and adopted many cutting-edge technologies including 3D portrait recognition. Form effective solutions for epidemic prevention and control.
The most important thing in epidemic prevention and control is to set up an efficient early warning system, and accurately locate potential infected people through human trajectory analysis to detect, isolate and diagnose as early as possible. People-intensive areas such as hospitals, communities, and transportation hubs are key areas of focus in epidemic prevention work. There are challenges in how to effectively check and control the flow of adults in these areas.
 
 In recent years, consensus has been gradually formed in the fields of security, counter-terrorism, and emergency response. The establishment of a 3D portrait database is a necessary basis for accurate comparison of large databases and analysis of personnel trajectories. Lu Shenyan took the lead in launching 3D database construction and portrait comparison projects and pilot construction applications in many places, with mature solutions and rich experience.
 
 After the outbreak, Zhejiang Security Vocational and Technical College proactively introduced timely and timely outbreak prevention and control solutions. In response to the actual needs of epidemic prevention and control, we carried out technical research on non-inductive comparisons of large warehouses and large fluxes, tracking of human behavior trajectories, and severe obstruction, and took the lead in forming a comparison plan for witnesses for human flow management and for pre-control epidemics The multi-person intelligence achieves intelligent investigation and scientific early warning through screening programs, intelligent buffer space sensing control solutions for infection prevention and control, and so on.
Comprehensive coverage of 3D solutions to efficiently meet the needs of epidemic prevention and control
 
In terms of human flow management, in order to balance residents' living and epidemic prevention measures, Wenzhou implemented village (resident) travel control measures throughout the city, requiring each household in the city to assign a family member to purchase materials every two days. For the safer and more effective implementation of this control measure, Huifan Technology Co., Ltd. uses 3D visual witness identification terminal equipment with 3D portrait data platform to form a witness identification comparison and rapid database construction solution. Entry and exit personnel are controlled, and at the same time, new personnel are quickly stored in the warehouse. The big data system in the background draws the trajectories of personnel in real time, providing a basis for epidemic investigation.
 
Relying on the rich features of 3D data, it is possible to achieve accurate comparison of large warehouses, and the number of base warehouses can be further expanded to cover the city's mobile and resident population, so as to achieve "no dead ends". In addition, for serious obstructions such as wearing a mask, hat, and protective glasses, the algorithm has been optimized to achieve a recognition accuracy of 97%.
 
In terms of pre-control of the epidemic, in order to take stricter personnel screening measures to prevent the phenomenon of human-to-human transmission, the multi-person intelligence built by Huifan Technology was quickly put into use through a screening program. This solution uses thermal imaging body temperature detection methods in conjunction with face recognition and comparison technology to quickly identify people with abnormal body temperatures and their identities. The system automatically retrieves their past behavioral trajectories, enabling intelligent screening and trajectory tracing, with a temperature measurement module accuracy of ± 0.3 ℃. The deployment is flexible, and the entire screening process is non-inductive and can be identified from a large angle, which effectively meets the needs of epidemic prevention and control.
 
The above plan was first delivered and applied to the First Affiliated Hospital of Wen Medical University, empowering China's first demonstration base of intelligent disinfection tube system. In addition, the program has been deployed to Wenzhou Centers for Disease Control and Prevention, Wenzhou Life and Health Town Precision Medical Center, core channels of many kindergartens, workshops, enterprises, and crowded public places to fully protect residents' lives.