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A Simulation Method for Panic Crowd Escape

A simulation method and crowd technology, applied in the field of virtual reality, can solve problems such as the inability to guarantee the repulsion force, achieve the effects of reducing the amount of calculation, diversifying behavioral characteristics, and avoiding repeated collisions

Inactive Publication Date: 2017-09-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the panic crowd simulation, the crowd often forms a very high crowd density at the escape exit. At this time, the original repulsive force in the social force model cannot guarantee that there will be no collision between agents.

Method used

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  • A Simulation Method for Panic Crowd Escape
  • A Simulation Method for Panic Crowd Escape
  • A Simulation Method for Panic Crowd Escape

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Experimental program
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Embodiment Construction

[0050] Below in conjunction with accompanying drawing and embodiment the preferred implementation mode of the present invention is further described:

[0051] Before the algorithm is implemented, this implementation pre-calculates the crowd simulation parameter values ​​of each Agent individual. Determine the required personality characteristic values, and solve the corresponding crowd simulation parameters through the pseudo-inverse matrix shown in formula (10). Then it is written into the program code as the initial parameter of the Agent. This implementation generally includes three modules, crowd modeling, path planning and collision avoidance. The specific process is as follows: figure 1 As shown, in the following steps 1 to 9, these modules will be described respectively.

[0052] Step 1, establish a global grid, and add a dense grid in the bottleneck area that is prone to congestion. Calculate the density field of the scene according to the initial position and initi...

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Abstract

The invention provides a panic crowd escape simulation method and is to simulate crowd escape characteristics under the panic condition truly. The method uses a social force model to carry out crowd modeling; according to the characteristics of the panic crowd, a new interaction force is invented, and a character model is introduced; and behavior characteristics of agents with different characters are simulated by adjusting the crowd simulation parameters. In the aspect of escape route planning technology, uniform grid technology is invented, so that Agent is allowed to sense the ambient environment more accurately, and route selection is various. In route planning, for the case that under a real scene, crowd visual fields are always blocked by barriers and the like, the partial visual field technology is invented to enable the crowd to only regard points in the visual field range as target points for navigation, thereby guaranteeing authenticity of the simulation.

Description

technical field [0001] The invention belongs to the technical field of virtual reality, and in particular relates to a crowd escape simulation method in a state of panic. Background technique [0002] In the face of disasters and other emergencies, crowds tend to have the characteristics of panic, and this panic can easily cause mass disasters, so people have been studying the characteristics of panic crowds, and the simulation of panic crowds is under study. A pivotal part. With the rapid development of computer animation technology, especially the development of group animation, the simulation of panic crowd is no longer just a theory. [0003] Group animation is a form of animation that simulates the interaction between a single individual in a group and other individuals, as well as between a single individual and the surrounding environment. As the core technology of group animation, path planning technology is not only widely used in the field of graphics, but also w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T13/40
CPCG06T13/40
Inventor 陈雷霆杨帅卢光辉蔡洪斌曹跃邱航崔金钟
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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