| 基于GPU的平滑地形可视化算法 |
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| 引用本文： | 张燕燕,姜洪洲,韩俊伟.基于GPU的平滑地形可视化算法[J].电子科技大学学报(社会科学版),2009(6). |
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| 作者姓名： | 张燕燕 姜洪洲 韩俊伟 |
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| 作者单位： | 哈尔滨工业大学机电工程学院; |
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| 基金项目： | 教育部新世纪优秀人才支持计划(NCET_04_0325) |
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| 摘 要： | 提出了一种基于GPU的平滑地形可视化算法,侧重于解决地形可视化方法面临的时间连续性和空间连续性问题。算法采用了规则地形块的批LOD可视化方法。基于平滑过渡的思想,考虑了地形块相邻层次间的过渡和相邻的不同地形块间的边界匹配关系,以地形块的区域划分为基础,为每个顶点实时分配相应的过渡权值,在地形块的绘制过程中同时完成了不同LOD层次以及不同地形块间的平滑过渡,实现了整个地形的平滑可视化。面向GPU的算法设计与实现保证了其执行效率。针对典型数据集,该算法能够以较高的帧率完成大规模地形的实时平滑漫游,避免可视化过程中的裂缝和突跳等不连续现象。
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| 关 键 词： | GPU算法 Geomorph 层次细节模型 平滑可视化 大地形实时渲染 |
Smooth Terrain Rendering Algorithm Based on GPU |
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| ZHANG Yan-yan,JIANG Hong-zhou, HAN Jun-wei.Smooth Terrain Rendering Algorithm Based on GPU[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2009(6). |
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| Authors: | ZHANG Yan-yan JIANG Hong-zhou HAN Jun-wei |
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| Institution: | ZHANG Yan-yan,JIANG Hong-zhou,, HAN Jun-wei(School of Mechatronics Engineering,Harbin Institute of Technology Harbin 150001) |
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| Abstract: | A smooth terrain rendering algorithm based on GPU is proposed to solve time and space discontinuity problems during terrain visualization.The algorithm is a coarse-grained aggregated LOD method.Based on the smooth geomorph idea,the terrain chunk is divided into regions and the morphing weight of every vertex in the region is evaluated in real time for current morphing operation.The morphing weight involves the transition between different detail levels and the level difference between neighboring chunks.Thr... |
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| Keywords: | GPU-based algorithms Geomorph level of details smooth data visualization terrain interactive walkthrough |
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