Crowd instability threshold monitoring method and system combining video monitoring and simulation

Abstract

The invention discloses a crowd instability threshold monitoring method and system combining video monitoring and simulation, and relates to the field of emergency evacuation. The method comprises the steps that a virtual environment is constructed, and high-density crowd data set pictures are adopted for training; combining the trained model with a Deepsort algorithm, loading an existing accident video, implementing perspective transformation, and extracting feature parameters of pedestrians; calculating pedestrian data in the detection frame of the selected person treading area to obtain speed density, and calculating system entropy data to obtain a threshold value of crowd instability; an Anylogic software program is used for building a scene, a region with the maximum density is locked, and a threshold value of crowd instability is input into a state diagram to achieve logic judgment; the real-time judgment of pedestrian walking logic is realized; and obtaining and monitoring the safety threshold of the critical number of people under the channel structures with different lengths and widths in the simulated scene.

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