多点位监控视频分析在火灾过程重构中的应用  

Application of multi-point surveillance videos analysis in fire process reconstruction

作　　者：王晓军 苗新勇 韩冲 王鑫 Wang Xiaojun;Miao Xinyong;Han Chong;Wang Xin(Tianjin Fire Science and Technology Research Institute of MEM,Tianjin 300381,China;Laboratory of Fire Protec-tion Technology for Industry and Public Building,Ministry of Emergency Management,Tianjin 300381,China;Tianjin Key Laboratory of Fire Safety Technology,Tianjin 300381,China;School of Electrical and Information Engineering,Tianjin Uni-versity,Tianjin 300072,China;Shunyi Fire and Rescue Divi-sion,Beijing 101399,China;School of Microelectronics,Tianjin University,Tianjin 300072,China)

机构地区：[1]应急管理部天津消防研究所,天津300381 [2]工业与公共建筑火灾防控技术应急管理部重点实验室,天津300381 [3]天津市消防安全技术重点实验室,天津300381 [4]天津大学电气自动化与信息工程学院,天津300072 [5]北京市顺义区消防救援支队,北京101399 [6]天津大学微电子学院,天津300072

出　　处：《消防科学与技术》2024年第2期231-236,243,共7页Fire Science and Technology

基　　金：国家重点研发计划专题(2022YFC300630505);国家消防救援局科技计划项目(2023XFCX23)。

摘　　要：以一起大型仓库火灾事故调查为例,介绍了多点位监控视频分析在火灾过程重构中的应用。通过点位初筛筛选出包含有效信息的视频,通过相对时间校准消除了各点位的时间误差,然后根据各点位视频画面综合分析确定了起火时间,根据各点位光影交叉定位和相互印证,确定了起火部位和火势发展情况,从而重构了该起火灾的起火过程。在此基础上,分析了火灾调查工作中提取多点位监控视频的注意事项,总结了多点位监控视频分析中的一些原则和方法。Taking a large warehouse fire accident investigation as an example,this article introduces the application of multi-point surveillance videos analysis in fire process reconstruction.The vid⁃eos containing valid information are screened out through primary screening of the points,and the time error between points is elim⁃ieos containing valid information are screened out through prima⁃ryscreening of the points,and the time error between points is eliminated through relative time calibration.Then the ignition time is determined according to the comprehensive analysis of video images of each point,and the ignition area and fire behavior are determined based on the cross-location and mutual confirma⁃tion of the light and shadow at each point,thus reconstructing the fire process.On this basis,the precautions for extracting multi-point surveillance videos in fire investigation are analyzed,and the principles and methods of multi-point surveillance videos analysis are summarized.

关 键 词：多点位 视频分析 起火时间 起火部位 火灾过程重构 

分 类 号：X928.7[环境科学与工程—安全科学] D631.6[政治法律—政治学]