Abstract: Urban visibility analysis is always concerned in urban spatial structure analyzing. Based on the 2D space syntax, taking into account the height of the buildings as the third dimension, this paper processes urban visibility analysis using 3D space syntax. It creates 3D axial lines from 2D axial map and calculate the slope of each line. The average slope value of the two intersecting lines is assigned to that intersection point as the visibility measure. The urban visibility surface is created by interpolating points using Kriging.

Key words: urban spatial structure, visibility analysis, axial map, 3D space syntax

摘要： 城市空间结构分析中，城市空间内的通视分析是一个基本的问题。在二维空间句法研究的基础上，将城市建筑物的高度作为第三维，进行了基于三维空间句法的城市空间通视性研究。在传统二维轴线地图上，创建了三维轴线地图，将轴线交点平均斜率作为评价该点通视性指标，通过克吕格插值方法生成了城市空间内的通视性分布图。

关键词: 城市空间结构, 通视分析, 轴线地图, 三维空间句法