A QUANTITATIVE EXTRACTION METHOD OF URBAN COLOR CHARACTERISTICS:BASED ON THE COMPARISON OF 20 CHINESE CITIES
To avoid homogenization of urban identity,it is necessary to analyze the current color tone of a city to develop unique color landscape with local characteristics in urban color planning.This paper first analyzes the concepts of prevalent color and color tone from a theoretical level.Then based on the field survey data and street map data of 20 Chinese cities,the paper quantitatively extracts the prevalent color chromatogram common to most cities and the unique basic color chromatogram of each city from the existing building facade colors,and carries out a comparative study on the color tone characteristics of these cities.The findings reveal that,based on the prevalent color of most cities,the characteristics of color tone of a city can be quantitatively extracted,and then the areas with unique color landscape of the city can be demarcated.This method helps to explore the formation mechanisms and protection measures of urban color characteristics.Meanwhile,taking up a high proportion in urban color,the prevalent color and color tone have an important reference value for urban color research and planning.