Deep Trajectory Classification Model for Congestion Detection in Human Crowds  

作　　者：Emad Felemban Sultan Daud Khan Atif Naseer Faizan Ur Rehman Saleh Basalamah 

机构地区：[1]Department of Computer Engineering,College of Computing and Information Systems,Umm Al-Qura University,Makkah,Saudi Arabia [2]Department of Computer Science,National University of Technology,Islamabad,Pakistan [3]Science and Technology Unit,Umm Al-Qura University,Makkah,Saudi Arabia [4]Institute of Consulting Research and Studies,Umm Al-Qura University,Makkah,Saudi Arabia

出　　处：《Computers, Materials & Continua》2021年第7期705-725,共21页计算机、材料和连续体（英文）

基　　金：supported by the Ministry of Education in Saudi Arabia(Grant Number 0909).

摘　　要：In high-density gatherings,crowd disasters frequently occur despite all the safety measures.Timely detection of congestion in human crowds using automated analysis of video footage can prevent crowd disasters.Recent work on the prevention of crowd disasters has been based on manual analysis of video footage.Some methods also measure crowd congestion by estimating crowd density.However,crowd density alone cannot provide reliable information about congestion.This paper proposes a deep learning framework for automated crowd congestion detection that leverages pedestrian trajectories.The proposed framework divided the input video into several temporal segments.We then extracted dense trajectories from each temporal segment and converted these into a spatio-temporal image without losing information.A classification model based on convolutional neural networks was then trained using spatio-temporal images.Next,we generated a score map by encoding each point trajectory with its respective class score.After this,we obtained the congested regions by employing the non-maximum suppression method on the score map.Finally,we demonstrated the proposed framework’s effectiveness by performing a series of experiments on challenging video sequences.

关 键 词：Crowd congestion TRAJECTORY CLASSIFICATION crowd analysis 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]