GIS 3Dmap city sensing tracking trajectory modeling application       This site outlines my basic research interests both past and present, and documents my academic background and achievements to date. It also provides summaries of recent innovative advances in the research of pedestrian movement modeling/simulation as well as its application to urban planning. My long term research objective is to describe influence of built environment on pedestrian movement, especially in micro scale such as inside of railroad stations or shopping malls. Current research topics include: Analysis on physical walking patterns Agent simulation of pedestrian movement