QUANTITATIVE ASSESSMENT OF INTERACTION SPACES ON AN UNIVERSITY CAMPUS

This study aims to evaluate interaction spaces on university campuses by developing two spatial indicators: Enclosure Degree (E) and Pedestrian Flow Visibility (V). The former represents the psychological sense of enclosure, calculated from panoramic image-based solid angles weighted by logarithmic distance. The latter quantifies the visible pedestrian stimulus by integrating pedestrian density, movement frequency, and observable road length. An empirical analysis was conducted at the lawn plaza of Tokyo Metropolitan University. The results of zero-inflated negative binomial regression indicate that moderate levels of E and V positively correlate with the number of social interactions, whereas extreme values may hinder interaction.