A townscape evaluation system based on Kansei and colour harmony models

Townscape colours have been a main factor in urban-development problems. In a townscape, keeping harmony within the environment is a common goal. But expressing individuality and impressions of the town are also meaningful goals. We proposed a colour planning support system to improve townscapes. The system finds propositional colour combinations based on three elements: impressions of the townscape, colour harmony, and cost. In this paper, we mainly discuss the evaluation methods in Kansei and colour harmony models. The colour harmony model evaluates the townscape colours from the approach of colour harmony. To construct the model, we adopted the colour harmony equations from those proposed by Moon and Spencer. After the construction, we conducted evaluation experiments for 20 subjects to test the model performance. The testing showed sufficient correlation between model output and subject response for implementation of the harmony model in the townscape evaluation system.