基于3DGIS的城市规划可视性分析模型研究Visibility analysis model of urban planning based on 3DGIS
尹长林,许文强
摘要(Abstract)：
视觉效果是城市规划需要考虑的重要要素之一。基于3DGIS的计算机技术可以用于定量分析城市三维景观空间的可视性。本文介绍了可视性分析应用于城市规划的流程,提出了针对地形和建筑物可视性分析的数学几何模型。在地形可视性分析模型中,采用了一种结合水平投影和高程插值计算的方法判断地形上两点之间的通视性;在建筑物可视性分析中,采用平行投影、点和多边形关系计算方法确定视线和建筑物的关系。在基于通视分析的基础上,提出了进行可视域分析的离散计算模型。针对不同景观特点,地形和建筑物的可视性分析模型可以被选择性地采用。分析实例的结果证明了数学几何模型的有效性。
关键词(KeyWords)： 可视性分析;城市规划;3DGIS
基金项目(Foundation):
作者(Author): 尹长林,许文强
DOI: 10.16251/j.cnki.1009-2307.2011.04.073
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