三维地形渲染中视景体剔除效果的改善

张唯

doi:10.3799/dqkx.2010.047

Volume 35 Issue 3

May 2010

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ZHANG Wei, 2010. Improvement of View Frustum Culling Quality in 3D Terrain Rendering. Earth Science, 35(3): 403-406, 462. doi: 10.3799/dqkx.2010.047

Citation:

ZHANG Wei, 2010. Improvement of View Frustum Culling Quality in 3D Terrain Rendering. Earth Science, 35(3): 403-406, 462. doi: 10.3799/dqkx.2010.047

ZHANG Wei, 2010. Improvement of View Frustum Culling Quality in 3D Terrain Rendering. Earth Science, 35(3): 403-406, 462. doi: 10.3799/dqkx.2010.047

Citation:

ZHANG Wei, 2010. Improvement of View Frustum Culling Quality in 3D Terrain Rendering. Earth Science, 35(3): 403-406, 462. doi: 10.3799/dqkx.2010.047

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Improvement of View Frustum Culling Quality in 3D Terrain Rendering

doi: 10.3799/dqkx.2010.047

ZHANG Wei

Faculty of Information Engineering, China University of Geosciences, Wuhan 430074, China

Received Date: 2010-01-15
Publish Date: 2010-05-01

Abstract

Abstract

To improve the quality of three-dimensional scene, view frustum culling according to the amount of rendering data and observation positions is needed. Based on the character of three-dimensional terrain scene and the parameters of far-near clip plane in perspective projection, this paper builds a relationship between the far-near clip plane of perspective projection and the observation model for the three-dimensional scene with grid raster terrain data. By using the dynamic setting of far-near clip plane, this method can change the abnormal phenomenon caused by the fixed clip plane. It enhances the quality of three-dimensional rendering and ensures the accuracy and quickening the speed of rendering at the same time.
- clip plane,
- view frustum culling,
- perspective projection,
- geographic information system (GIS)

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References(16)

References

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