一种新的全球海量地形实时绘制算法A new real-time rendering algorithm of global massive terrain
汪荣峰,廖学军
摘要(Abstract)：
本文为实现全球海量地形数据的实时可视化,提出了一种新算法。算法不使用几何数据而是利用球面特征进行地形多分辨率模型初建,然后基于视锥与节点关系对初建结果进行扩展来得到完整的地形网格。此外设计了能消除具有复杂邻接关系的节点间裂缝的拼接方式,构造了简洁的方法消除GPU32位浮点精度导致的"wob-bling"现象。实现的算法在普通微机上平均漫游速度达每秒95帧以上。
关键词(KeyWords)： 全球四叉树;海量数据;球面;视锥;裂缝消除
基金项目(Foundation):
作者(Author): 汪荣峰,廖学军
DOI: 10.16251/j.cnki.1009-2307.2013.01.037
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