抄録
The purpose of this study is to propose a method of quantification of the gap between buildings. The gap is defined as an area where a circle of radius r cannot sweep through on a building location map. To extract the gap area, the operations of image processing method are applied.
By applying the proposed method to the building location of Tokyo and Osaka cities, the following results were obtained. 1) The quantity of gap cannot be neglected in urban area. 2) The gap ratios and indices of building density were correlated. 3) High gap ratio areas are located circularly.
