Quantitative and Rational Research for the Sense Quantum ——Research of the Order Factors for Color Harmony Aesthetic

The paper gives a brief analysis of the color harmony aesthetic measure of Spencer which was emerged in the industry art age, and points out shortcomings of the early studies. It studies order factors which affect the color harmony aesthetic measure based on the psychophysical method, and presents a continuous curve of the order factors. These are necessary for true color CAD, and are an essential research for automatic design leading to economic and social benefits. Key words paired comparison - color harmony - aesthetic measure - order factor

A novel approach for assessing color harmony of historical buildings via street view image

While new buildings continue to emerge in the process of urbanization,historical buildings,as valuable legacies carrying national historical memory,play an important role in the urban landscape.Previous studies have shown that color harmony is a crucial factor in coordinating urban landscapes.However,the evaluation of color harmony in historic areas and buildings lacks effective quantitative standards,often overlooking factors such as complementary color harmony and the compatibility of analogous colors.This study aims to build a new method to evaluate the color harmony of historical buildings through street view technology,semantic segmentation algorithms,quantification of color harmony methods based on image property detection and classification,questionnaire verification,and takes Shanghai’s historical buildings as an example to explore.Our study categorizes six types of color harmony indexes for Shanghai street-facing historic buildings into three levels,with the top tier serving as a benchmark for excellence and the lowest tier highlighting areas in need of urban environmental improvement.This study uniquely considers color compatibility within hue ranges and expanded relationship types like complementary harmony.This approach,applicable to cities globally,offers practical tools for urban planners and conservators in managing and preserving historic areas and buildings.

A Spatial Analysis of Urban Color Harmony in Five Global Metropolises

Harmonious urban color can reduce urban light pollution,relieve the urban heat island effect,improve the living quality and form a distinctive style.However,due to the manifold architectural styles,urban color in metropolises typically becomes complicated,which may destroy the color harmony of metropolises.Up to now,there has not been enough research on the quantitative expression of the degree of color harmony,and the research on comparing the urban color characteristics of different metropolises is also relatively insufficient.This paper firstly developed a method to quantitatively measure the degrees of color harmony(DCHs)of five metropolises in 2020:London,Tokyo,Chicago,Paris,and Beijing,by writing a Python program and using the Sentinel-2 A remote sensing data.GIS buffers were then used to analyze the spatial distribution of the DCHs within each metropolis.In addition,20 typical samples were selected to analyze the differences of the DCHs between residential and industrial areas.The results showed that:(1)The values of the DCHs of London and Tokyo were the highest,followed by Chicago and Paris,while Beijing was the lowest.(2)The values of the DCHs were increasing from the inside out in Chicago,Paris,and London,while those in Beijing and Tokyo were decreasing.(3)The values of the DCHs in industrial areas were much lower than in residential areas.Based on the above results,policy implications are provided for color management of these metropolises.Lastly,this study may provide a method for the rapid analysis the DCHs for other metropolises.