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Path correction method, device and equipment and readable storage medium

A path and partial path technology, applied in the field of virtual reality, can solve problems such as poor expression of model animation, stiff movements, and inability to adjust, and achieve the effect of reducing the degree of psychological panic

Active Publication Date: 2022-05-27
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are many evacuation research methods or systems based on virtual reality technology in the prior art, there are still deficiencies: lack of dynamic information extraction of station staff in the virtual environment; lack of models that can respond to real-time interactive environmental information; model animation The expressiveness is poor. The character model in the existing technology scene is just a mechanical repetition of several preset actions. The action is very rigid. There are few character animations that consider the integration of physics. Real-time body adjustments cannot be made according to changes in speed. It is easy to immerse participants from detachment

Method used

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  • Path correction method, device and equipment and readable storage medium
  • Path correction method, device and equipment and readable storage medium
  • Path correction method, device and equipment and readable storage medium

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0062] This embodiment provides a path correction method.

[0063] see figure 1 , the figure shows that the method includes step S100, step S200, step S300 and step S400.

[0064] S100, build an evacuation scene, model the environment, and then initialize the personnel to be evacuated.

[0065] S101. It can be understood that in this step, a passenger model with bones is used to establish a passenger model in the virtual environment, and an appearance model of the passenger in the virtual environment is obtained; at the planning model level, the agent is considered to be generally considered to be able to perceive the environment and An intelligent entity that responds with basic characteristics such as independence, autonomy, and sociality. Abstracting pedestrians as agents, each agent has a state composed of a set of related attributes, and the sensed data can be analyzed with the corresponding model mechanism to generate appropriate actions and decisions, that is, percept...

Embodiment 2

[0154] like figure 2 As shown, this embodiment provides a path correction device, see figure 2 The device includes a building module 701, an extraction module 702, a first calculation module 703, a second calculation module 704 and a third calculation module 705, wherein:

[0155] Building module 701: used to build an evacuation scene, initialize the personnel to be evacuated, and generate a navigation grid;

[0156] Extraction module 702: configured to perform global path planning for the evacuation scene, and obtain a global planned path of the person to be evacuated in the evacuation scene;

[0157] The first calculation module 703: used to extract key points of the path according to the global path, establish a cost function about the length of the road section and the number of pedestrians, and use the D*Lite algorithm to correct the local path between the key points;

[0158] The second calculation module 704 is configured to simulate the initialized personnel to be ev...

Embodiment 3

[0187] Corresponding to the above method embodiments, this embodiment also provides a path correction device, and a path correction device described below and a path correction method described above may refer to each other correspondingly.

[0188] image 3 It is a block diagram of a path correction device 800 according to an exemplary embodiment. like image 3 As shown, the path correction device 800 may include: a processor 801 and a memory 802 . The path modification device 800 may also include one or more of a multimedia component 803 , an I / O interface 804 , and a communication component 805 .

[0189] The processor 801 is configured to control the overall operation of the path correction device 800 to complete all or part of the steps in the above path correction method. Memory 802 is used to store various types of data to support the operation of the path correction device 800, such data may include, for example, instructions for any application or method operating ...

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Abstract

The invention provides a path correction method, device and equipment and a readable storage medium, and relates to the technical field of virtual reality, and the method comprises the steps: building a navigation grid for an evacuation scene, and carrying out the global path planning of a to-be-evacuated person; extracting path key points, and correcting a local evacuation path according to the length of the road section and the pedestrian density; calculating the moving speed and direction; moving to a target point, and re-correcting the route if the environment changes; and obtaining a corrected path until the vehicle arrives at an emergency exit. On one hand, the navigation grid is used for updating and reflecting the state change of station service personnel to dynamic obstacles and reflecting the response of passengers to the interactive virtual environment; and on the other hand, a road section evaluation function of the path and density is established, the passenger performs route adjustment according to environment information in the view field range, the influence of panic factors and other pedestrians is fully considered in the moving process, and the moving speed and the moving direction are dynamically adjusted.

Description

technical field [0001] The present invention relates to the technical field of virtual reality, and in particular, to a path correction method, apparatus, device and readable storage medium. Background technique [0002] Urban rail transit stations are closed and complex, and under the impact of massive passenger flow loads, the passenger group shows a high degree of instability; once an accident occurs, the system is very easy to collapse. In addition, due to factors such as unfamiliarity and panic among the passengers in the system, the crowd behaves blindly in the evacuation state, which induces stampede accidents. How to make full use of environmental information to plan an effective escape route for passengers and shorten the evacuation time has become a research focus of the industry. [0003] Although there are many evacuation research methods or systems based on virtual reality technology in the prior art, there are still shortcomings: lack of dynamic information ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/02
CPCG05D1/0223G05D1/0214G05D1/0221G05D1/0276Y02A10/40
Inventor 王子甲余亮朱亚迪王伟彤
Owner BEIJING JIAOTONG UNIV
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