クライシスマッピングを支えた地図配信サーバ構築ウラ話The document discusses using OpenStreetMap (OSM) to map areas in response to natural disasters. It provides examples of how OSM was used after the 2010 Haiti earthquake and 2011 Japan earthquake and tsunami. It outlines how OSM data is collected through tools like GPS, aerial imagery, and local knowledge. The document promotes contributing to OSM to build free maps that can help relief efforts and
