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Real-time lighting drawing method under virtual stage environment

A real-time rendering and environmental technology, applied in 3D image processing, image data processing, instruments, etc., can solve the problems of large amount of calculation and inaccurate effect, and achieve the effect of improving utilization rate, reducing rendering, and speeding up drawing speed

Inactive Publication Date: 2011-08-31
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of method needs to calculate the illumination value step by step, so the calculation amount is also large, but if the number of sampling points is reduced, the effect obtained by drawing will not be accurate

Method used

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  • Real-time lighting drawing method under virtual stage environment
  • Real-time lighting drawing method under virtual stage environment
  • Real-time lighting drawing method under virtual stage environment

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Experimental program
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Embodiment Construction

[0038] like figure 1 Shown, the concrete implementation method of the present invention is as follows:

[0039] (1) Establish a light source hierarchical tree, and use the light source hierarchical tree to cluster multiple light sources in the virtual stage environment.

[0040] In order to realize real-time rendering of lighting effects of multiple light sources in the virtual stage environment, the method of clustering multiple light sources is used in the present invention. The basic principle is to build a light source hierarchical tree, and cluster each light source into several large virtual light sources according to the light source hierarchical tree to render the participating media and scenes, thereby reducing the number of light sources affecting the stage scene and improving the performance of the scene. Draw speed.

[0041] The present invention uses the data structure of the octree to define the light source hierarchical tree used, and the nodes in the designed...

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Abstract

The invention relates to a real-time illumination plotting method under virtual stage environment, mainly comprising: combining Deferred shading technique and clustering method to do optimization; using 3D texture to organize medium attribute information; clustering a plurality of light sources into a virtual light source; real-timely plotting the participating media under the illumination of a plurality of stage light sources. The invention combines shadow map, shadow volume and ray marching techniques and the like, to provide a method for real-time plotting indoor scene object shadows. Tests prove that the real-time illumination plotting method can actually simulate complex illumination under virtual stage environment, and has the advantages of high real-time property.

Description

technical field [0001] The invention relates to a method for real-time lighting rendering in a virtual stage environment. Background technique [0002] In the virtual environment system, authenticity and real-time performance are two major challenges in constructing virtual environment. Authenticity emphasizes whether the system can build a realistic natural environment, so that users can ignore the computer system and achieve the feeling of being in the natural environment. Real-time performance emphasizes whether the system can interact with users randomly in real time, so as to better serve various applications. [0003] The following briefly introduces some domestic and foreign experts' research status on the shadow rendering of participating media and indoor environment volumes under the illumination of multiple light sources on the virtual stage in recent years. [0004] The transmission of light in the participating medium is mainly affected by the following three p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/50
Inventor 郝爱民朱磊阎峻何冰
Owner BEIHANG UNIV
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