Dummy dynamic population visibility judging method

A group and dynamic technology, applied in the field of virtual reality, can solve problems such as large amount of calculation and incompatibility, and achieve the effect of strong adaptability, reducing consumption and saving computing time.

Inactive Publication Date: 2009-01-07
BEIJING BOOSTIV TECH
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the existing virtual dynamic group visibility judgment method that the amo...

Method used

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  • Dummy dynamic population visibility judging method
  • Dummy dynamic population visibility judging method
  • Dummy dynamic population visibility judging method

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Embodiment Construction

[0036] The method for judging the visibility of the virtual dynamic group in the present invention is to combine the individual with the scene node in the simulation process, and then realize the visibility judgment of the individual through the visibility judgment of the scene node. In the following embodiments, taking a virtual person as an example, combining image 3 The implementation process of how to realize the visibility judgment of virtual crowd is described in detail.

[0037] The realization process of virtual crowd movement is realized on the basis of crowd simulation data. The group simulation data is data used to represent the spatial position of each individual in the virtual group to be simulated at different times. An example of existing group simulation data is given in Table 1 below, which gives the spatial position and attributes of individual m at different times, and the attributes include information such as residence time and motion state.

[0038] Ta...

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Abstract

The invention provides a visibility judgment method of a virtual dynamic crowd, which is used for judging visibility of each individual in the virtual dynamic crowd based on crowd simulation data; wherein, the crowd simulation data comprises individuals, locations of the individuals at a certain time and IDs of scene nodes corresponding to the individuals at a certain time; the visibility judgment method comprises the following steps: visibility eliminating is carried out for a static scene, a visibility result of each frame is updated to the visibility information array of the nodes in time; the individuals in the simulation data are combined with the scene nodes corresponding to the IDs of the scene nodes, and then the visibility eliminating of each individual is realized according to the visibility of the scene nodes in the visibility information array of the nodes. The method of the invention takes an individual in the crowd as one part of the corresponding scene node of the individual, and directly attaches the scene visibility to the individual, which avoids solely judging the visibility of a great quantity of individuals, and greatly reduces consumption caused by spatial data structure update and individual shading query.

Description

technical field [0001] The invention relates to the field of virtual reality, in particular to a method for judging the visibility when drawing a virtual dynamic group. Background technique [0002] When using virtual reality technology to visualize large-scale complex scenes in 3D, it involves real-time rendering technology for complex scenes. Visibility judgment has always been a very important research topic in the field of real-time rendering. Since a large part of a complex scene is usually out of view, occluded, and other invisible states, avoiding calculation and rendering of it can save a considerable amount of work and improve real-time rendering efficiency. However, in many practical applications, complex scenes include not only static environment models, but also large-scale dynamic swarms that bring life to a single static scene. For example, in the safety rehearsal, the simulation of the safety plan requires a large number of virtual crowds as the main body; in...

Claims

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Application Information

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IPC IPC(8): G06T15/00
Inventor 王竹束搏徐文彬王兆其
Owner BEIJING BOOSTIV TECH
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