Method for simplifying large-scale virtual dynamic group

A dynamic scene and large-scale technology, applied in the field of virtual reality, can solve the problems of point sampling model drawing speed and unsatisfactory realization effect, so as to speed up the time of preprocessing and drawing, improve rendering speed and rendering effect, and reduce information The effect of storage

Inactive Publication Date: 2012-04-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Due to the complexity of large-scale dynamic scenes, the current drawing speed and implementation effect based on point sampling models are not ideal

Method used

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  • Method for simplifying large-scale virtual dynamic group
  • Method for simplifying large-scale virtual dynamic group
  • Method for simplifying large-scale virtual dynamic group

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and embodiment the preferred embodiment of the present invention is further described:

[0032] figure 1 Shown flow chart has provided the concrete process of whole implementation of the present invention:

[0033] Step 1, the input of the traditional grid model, in this embodiment, the model of the .X file is selected as the input.

[0034] Step 2, calculate the original bounding box of the model, calculate the vertex coordinates of the lower left corner and the vertex coordinates of the upper right corner of the bounding box of the model by using the function of obtaining the bounding box of the model, calculate the side lengths of the bounding boxes in the three directions of XYZ respectively, and select three The maximum value of the side lengths is used as the side length of the new cube bounding box, and a new bounding box is established.

[0035] Step 3, divide the fixed grid according to the fixed ratio value of t...

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Abstract

The invention relates to a method for simplifying large-scale virtual dynamic group in the technical field of virtual reality technique. With the purpose of improving rendering speed and rendering effect of large-scale group animation, in the method of the invention, fixed grid surface spot sampling is employed and sampling point redundancy is removed to reduce information memory space, improve pre-processing speed; information retained at a sampling point list and a triangle list is used for replacing vertex information and surface information in an X file of an original model to generate X-file-like files instead of using key frame technology, so that processing complexity of group animation is simplified, different X-file-like files are created according to different LOD levels for group rendering, as a result, rendering speed is accelerated and rendering effect is improved. On the basis, the method of the invention can be employed to effective simplify the large-scale virtual dynamic group.

Description

technical field [0001] The invention belongs to the technical field of virtual reality, and in particular relates to a large-scale virtual dynamic scene simplification method. Background technique [0002] Large-scale crowd animation has always been one of the hotspots in the research of virtual reality technology. With the development of computer graphics, the modeling technology has become more and more mature, and the models have become more and more refined. However, a large number of different models are used in swarm simulation, making rendering speed and simulation fidelity the key issues of swarm simulation. For this problem, there are many mature methods for simplification technology of static scenes. [0003] The display of large-scale dynamic group scenes is mainly determined by the characteristics of the scene, including requirements such as individual independence, mobility, scene scale, fidelity, and real-time performance. Various display methods have also b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T13/20
Inventor 卢光辉曾维薇蔡洪斌何晓曦陈雷霆何明耘曹跃
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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