| 基于视点的分块LOD大规模地形生成算法研究 |
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| 引用本文： | 原庆红,韩燮.基于视点的分块LOD大规模地形生成算法研究[J].微电子学与计算机,2011,28(6):41-45. |
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| 作者姓名： | 原庆红 韩燮 |
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| 作者单位： | 中北大学,电子与计算机科学技术学院,山西,太原,030051 |
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| 摘 要： | 针对虚拟战场环境仿真中构建大规模地形的速度问题,介绍了一种基于视点和分块的LOD大规模地形生成算法,能够快速地构建海量数据的地形模型.该算法首先对海量地形数据分块后以四叉树结构存储;然后应用简单的圆锥视景体快速裁剪地形块,丢弃与视景体相离的地形块,对于与视景体相交地形块剪裁出位于视景体内的四叉树结点.根据视点到节点距离和地形本身的粗糙度,选用合适的LOD渲染地形,最后应用基于视点的方法消除裂缝.在数据相同情况下,该算法比四叉树算法减少约1/2时间,并且更逼真地生成了大规模数据地形.本算法也可用于逆向工程设计中重建物体等问题.
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| 关 键 词： | 四叉树 视点 视景体裁剪 |
Block-based Viewpoint Generation Algorithm for Large Scale Terrain LOD |
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| YUAN Qing-hong,HAN Xie.Block-based Viewpoint Generation Algorithm for Large Scale Terrain LOD[J].Microelectronics & Computer,2011,28(6):41-45. |
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| Authors: | YUAN Qing-hong HAN Xie |
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| Affiliation: | YUAN Qing-hong,HAN Xie(College of Electronics and Computer Science and Technology,North University of China,Taiyuan 030051,China) |
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| Abstract: | Virtual battlefield environment simulation for construction of the speed of large-scale topography,have introduced a block based on viewpoint and the LOD terrain generation algorithm for large-scale,which can quickly build massive data terrain model.The algorithm first massive terrain data block after the quadtree storage.Then apply the simple cone visual terrain Rapid cutting block and apply the simple cone visual terrain rapid cutting block.Discarded and the visual bulk of the terrain from the block,the i... |
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| Keywords: | quadtree viewpoint view frustum culling |
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