Fourteenth International Conference on Design Principles & Practices

Abstract

Designing by computer, such as generative design, has become common and attracted attention. The computer can optimize the shape on the basis of the engineering metrics (e.g., mass, stress, stiffness) but cannot easily evaluate human emotional characteristics (e.g., “beauty” and “preference”). Our study aims to construct the quantitative index to objectively evaluate the emotional characteristics of product shapes. As a preliminary study, we proposed an “order” index of 2D shape because “order” is an important factor to evaluate “beauty” and “preference”. The proposed index evaluates mirror/rotational symmetries and is calculated using the curvature plot of the closed curved shapes and their autocorrelation function. To confirm the effectiveness of the proposed index, we conducted the experiment using the silhouettes of humidifiers and confirmed the correlation between the sensory evaluation values and proposed index (the coefficient of determination exceeds 0.70).