抄録
A devastating earthquake and tsunami damaged large area in the Pacific coast of Japan, Tohoku district on March 11th 2011. In such a huge disaster, it is important to collect recovery information at regular intervals for speedy recovery work and disaster prevention. For information collecting work, aerial photos and conventional survey have been used, but these methods cost much. Thus, we have developed Mobile Mapping System (MMS) as an efficient survey method to collect information when disaster occurs. To collect information about the environment of disaster area and to record recovery process, we conducted a survey of the Tohoku district in June and November, 2011. This paper provides methods for extracting road environment changes around roads, such as postseismic crustal movement and reconstruction, by comparing time series 3D point clouds acquired from these two surveys.
