抄録
Recently, monitoring dynamic changes in people flow has become necessary, in order to mitigate secondary disasters following earthquakes, fires or other major events such as the East Great Japan Earthquake. In technical terms, tracking mobile objects by GPS, PHS, CCTV camera, IC (integrated circuit) tickets or mobile phone base station enables us to measure people flow according to various dimensions. This article describes type of spatio-temporal data about people flow and its basic process and analysis for secure and effective use.
