Dynamic evaluation method on townscape considering color and visual pleasantness

为提出一种兼顾宜人性和色彩的城市景观动态评价方法，研究了城市景观的物理要素（包括日照和阴影对一天中不同时间、不同天气和不同季节的影响）的解释方法，城市景观的印象评价方法，城市景观的色彩动态评价方法。（3）评价模型及因子参数的确定。利用ROB和XYZ彩色系统对数码相机拍摄的城市景观图像数据进行了分析。通过颜色分布和颜色变化率、同一场景中时间、天气和季节条件下的色差、二维傅立叶变换的功率谱分析和聚类分析等参数对城市景观进行描述，并于1998年采用SD法进行心理评价实验。一天中的时间，季节和天气之间的差异被澄清。这些结果与物理分析的结果相关。以建筑、理科、文学、中文四个专业的学生为研究对象，分析了这些属性之间的差异。另一个基于层次分析法（AHP）的被试实验，考察了被试对城市景观的偏好结构。

To propose a new dynamic evaluation method on townscape which took account of pleasantness and color, the followings were studied ; 1) explanation method of physical aspects of townscape including influences of sunlight and shadow by time of day , weather and season ; 2) impression evaluation by subjects corresponding to them ; and 3) evaluation model and decision of parameters of factors.In 1997, physical aspects were mainly investigated. Picture data of townscapes by digital still camera were analyzed by using of ROB and XYZ color systems. The description of townscape was done by color distribution and the change of the rate of colors, color difference between conditions of time, weather, and season in the same scene, power spectrum analysis by two-dimensional Fourier transformation, and cluster analysis using those parameters.In 1998, psychological evaluation experiment by SD Method was conducted. The differences between time of the day, season, and weather were clarified. Those results were related with the results of physical analysis. Students of architecture, science, literature, and Chinese were adopted as the subjects, and the differences between those attributes were also analyzed. Another subject experiment based on AHP(Analytic Hierarchy Process) was done, and subjects' preference structure to townscape was investigated.