Irosashi: Visualization of the Colors of a Building Which Leave an Impression to Identify Characteristics of an Urban Environment

The purpose of this research is to propose a GUI for visualizing data showing the characteristics of the city and evaluate its effect. The author was interested in visual impressions of the urban environment and wanted to share these impressions with others. First, I made a prototype of "Irosashi Treemap", which plots all colors used for buildings in the western part of Hakodate city. However, the colors displayed by the Irosashi Treemap differed from the impressions of the subjects who knew the western area due to the many achromatic colors. Therefore, I collected color from the triangular roof and walls on the first floor of the building I felt frequent. In addition, it was suggested that the "Irosashi Treemap" plotted all colors, making it difficult to understand the characteristics of the colors. Therefore, a prototype of "Irosashi Impression", which plots representative colors, was produced. In evaluation experiment, three subjects answered that the impression of the city was close to the impression of the color taken from the triangular roof and walls. In the future, we will ask many people to collect impressive colors of the city. And evaluate the effect of "Irosashi Impression".