基于SU和视线几何的空间开敞度研究

Based on SU and view geometry space open degree research

摘要：研究以人眼的视域为基础，模拟人眼的视域范围，通过视野范围控制下对SU建立的建筑空间立体模型进行视线与建筑模型的简单直线几何连接，以及建立垂直于地面的虚拟视野控制面进行放射投影成像，以建筑空间环境人眼视线二维可视的竖向通透面积和水平地面可视面积来分析二维视觉影响下的空间开敞度，同时计量三维视觉成像下建筑物的平均遮挡空间体积。通过通透面积、可视面积与虚拟视面面积进行比值量化分析二维视觉对空间开敞度的影响；通过平均遮挡空间体积与视域空间体积的比值量化分析三维视觉对空间开敞度的影响。综合二维和三维视域量化分析，形成系统评判空间开敞度的方法，改变GIS对空间开敞分析的定性分析。

Research on the human eye sight, based on simulation of the human eye sight range of architectural space three-dimensional model through the lower field of view control SU established a simple straight line of sight with the building model geometry connectivity, and the establishment perpendicular to the ground of the Virtual field of vision control surface for radiation projection imaging, to the construction of the space environment of the human eye sight dimensional visualization transparent vertical and horizontal surface area to analyze the viewing area of the open space under the visual impact of the two-dimensional, three-dimensional visual imaging measurement while under construction the average block space volume thereof. Through the transparent area, viewing area, as the virtual surface area ratio of quantitative analysis carried out on the impact of a two-dimensional visual space open degree; by the ratio of the average volume of space obscured sight space volume of the quantitative analysis of three-dimensional vision of open space influences. Comprehensive two and three dimensional sight quantitative analysis, a method of forming the open space system to judge the degree of change qualitative analysis of open GIS spatial analysis.