عنوان مقاله [English]
In January 17, 1995, five hours after occurrence of the greatest earthquake that crushed the city of Kobe (a coastal city of Japan), photographic airplanes flew over the damaged areas. They took about two thousand aerial photos from an area of about five thousand square kilometers including Kobe, Awaji and Osaka.At the same time (right after occurrence of earthquake in Kobe), a group was formed and led by Dr. Okamoto in earthquake research committee of the Geotechnical Association of Japan which started supervision and direction of identification and obtainment of data from the region using photos prepared by photographic airplanes from the area before and after the earthquake. The duty of this group was to design and propose a new system for area’s assessment and surveying that would carry out the area’s zoning, aerial triangulation, measurement and surveying, digital photography, system of receiving three-dimensional ground data and combination of archived infrastructural data. Using 117,000 photos taken by stereoscopic method as well as a hundred photos taken through direct photography from an area of about twenty-five thousand square kilometers, the photos of rebuilding information system were combined and this system was thus prepared.