講演情報
[D6-01]A Method of Measuring the Seismic Risk of Circulation Space in Urban Residential Streets based on Street-View Data
*Zongchao Gu1, Xiaojing Sun2, Haipeng Zhu1 (1. Southeast University, 2. Dalian University of Technology)
キーワード：
circulation space、street-view data、seismic risk measurement、street open space、panoramic projection
Measuring the accessibility of open spaces of streets is important for improving the connectivity and safety of residential areas during disasters such as earthquakes. This study proposes a method for identifying the layout of circulation space and routes of an urban street based on street-view data. First, the relative translation of neighboring viewpoints was calibrated to position a series of street-view panoramas on a street map. Next, a land-cover map was generated by stitching the ground projection of the positioned panoramas. The layout of local street circulation space was then created using image processing methods. Using optical flow algorithm, we reconstructed the 3D spatial models of the street facades and quantified the drop risk ranges of the street circulation space during the earthquake. It is expected to provide initial data for seismic risk detection and evacuation simulations.