| Occlusion Culling Algorithm Using Prefetching and Adaptive Level of Detail Technique |
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| 作者姓名： | 郑福仁 战守义 杨兵 |
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| 作者单位： | School of Computer Science and Technology Beijing Institute of Technology，Beijing 100081，China，School of Computer Science and Technology，Beijing Institute of Technology，Beijing 100081，China，School of Computer Science and Technology，Beijing Institute of Technology，Beijing 100081，China |
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| 基金项目： | the Minsterial Level Foundation(413040402) |
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| 摘 要： | Recent yearsin graphics area many rendering al-gorithms have been developed to support a newset ofdemanding applications.An efficient way to speed uprenderingis to avoid rendering geometry that cannotbe seen from current viewpoint,such as geometryoutside the current viewfrustumand obscured by ge-ometrythat is closer tothe current viewer.The hard-est part of the visibility culling problem is how toavoid rendering geometry whichis obscured by closergeometry.Our approach will focus on this.In thi…
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| 关 键 词： | 遮挡选择算法 预取 细节技术 细节适应层 近似算法 |
| 文章编号： | 1004-0579（2006）04-0425-06 |
| 收稿时间： | 2005-03-13 |
Occlusion Culling Algorithm Using Prefetching and Adaptive Level of Detail Techni |
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| ZHENG Fu-ren,ZHAN Shou-yi and Yang Bing.Occlusion Culling Algorithm Using Prefetching and Adaptive Level of Detail Technique[J].Journal of Beijing Institute of Technology,2006,15(4):425-430. |
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| Authors: | ZHENG Fu-ren ZHAN Shou-yi and Yang Bing |
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| Affiliation: | School of Computer Science and Technology,Beijing Institute of Technology,Beijing 100081,China;School of Computer Science and Technology,Beijing Institute of Technology,Beijing 100081,China;School of Computer Science and Technology,Beijing Institute of Technology,Beijing 100081,China |
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| Abstract: | A novel approach that integrates occlusion culling within the view-dependent rendering framework is proposed. The algorithm uses the prioritized-layered projection(PLP) algorithm to occlude those obscured objects,and uses an approximate visibility technique to accurately and efficiently determine which objects will be visible in the coming future and prefetch those objects from disk before they are rendered. View-dependent rendering technique provides the ability to change level of detail over the surface seamlessly and smoothly in real-time according to cell solidity value. |
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| Keywords: | occlusion culling prefetching adaptive level of detail(LOD) approximate algorithm conservative algorithm |
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