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Crowd evacuation visualization method based on emotion cognition

An emotion and crowd technology, applied in the field of computer simulation, can solve problems such as increased evacuation time and Herd behavior, and achieve the effect of improving authenticity and ensuring high efficiency

Active Publication Date: 2020-06-26
SOUTHWEST JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

Excessive panic can make it difficult for individuals to think carefully and judge the current situation, leading to increased herd behavior and increased evacuation time

Method used

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  • Crowd evacuation visualization method based on emotion cognition
  • Crowd evacuation visualization method based on emotion cognition
  • Crowd evacuation visualization method based on emotion cognition

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Experimental program
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Embodiment Construction

[0059] The specific implementation steps are as follows:

[0060] Step 1: Input and configure the corresponding three-dimensional environment information Environment, obstacle information Obstacles and exit information Exits, and construct the crowd evacuation navigation grid Navmesh, such as image 3 shown. Initialize the emotional value of individual i with speed emotional value It refers to setting the individual's emotional value to 0 at the initial moment, that is, no emotional state; during the evacuation process, the individual's emotional value is between 0 and 1, and the emotional value is greater than 0 to indicate the emotional activation state; It means that the individual is randomly assigned a walking speed of 1.3-1.5m / s at the initial moment; Figure 4 shown.

[0061] Step 2: Initialize the personality trait Ψ of individual i based on the OCEAN model i , OCEAN model describes individual personality traits as variables of five dimensions, including Open...

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Abstract

The invention discloses a crowd evacuation visualization method based on emotion cognition. The method comprises the following steps:constructing a crowd evacuation navigation grid, initializing crowds, after an emergency occurs, calculating the emotion and the movement speed of each individual, calculating the crowd density of a walkable area according to the crowd movement information, updatinga navigation network, planning the shortest path or the fastest path for each individual according to a navigation graph search algorithm based on density information, and achieving crowd evacuation visualization in a graphical mode. The crowd evacuation visualization method has the advantages that the method is different from a traditional crowd evacuation visualization method, and the authenticity of crowd evacuation visualization is effectively improved; different from a traditional navigation graph algorithm, the method guarantees the diversity of individual behaviors in crowd evacuation visualization; different from a traditional individual geometric representation method, the method guarantees the high efficiency of crowd evacuation.

Description

technical field [0001] The invention relates to the technical field of computer simulation, in particular to a visualization method for crowd evacuation based on emotional cognition. Background technique [0002] The study of crowd movement in emergencies involves complex fields such as psychology, sociology, and group dynamics, and is a multidisciplinary and complex systemic subject. In recent years, with the continuous development of urban computing and crowd simulation technology, crowd emergency evacuation has become one of the research hotspots in the field of computer simulation at this stage. Combining group animation and visual analysis technology, the movement pattern of the crowd can be further explored, which helps to quickly evacuate the crowd to the refuge, reduce the stampede accidents caused by the overcrowding of the crowd during evacuation, and provide an effective reference for architectural planners. It has very important research significance in various ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q50/26
CPCG06Q50/26
Inventor 李天瑞杨善雯彭博龚勋胡节
Owner SOUTHWEST JIAOTONG UNIV
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