1. Center for Spatial Information Science, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
2. Department of Urban and Regional Planning, Faculty of Architecture, Istanbul Technical University, Taskisla, Taksim, Istanbul, Turkey
3. Center for Spatial Information Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8904, Japan