TY - JOUR A1 - Niu, L. A1 - Ke, X. A1 - Qiu, Z. T1 - A PEDESTRIAN ACCESSIBLE POSITION EXTRACTION METHOD OF EXISTING 3D FILES FOR LARGE BUILDING EVACUATIONS JO - Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Archives VL - XXXIX-B4 SP - 339 EP - 344 Y1 - 2012/07/31 PB - ISPRS SN - 2194-9034 UR - https://isprs-archives.copernicus.org/articles/XXXIX-B4/339/2012/ L1 - https://isprs-archives.copernicus.org/articles/XXXIX-B4/339/2012/isprsarchives-XXXIX-B4-339-2012.pdf DO - 10.5194/isprsarchives-XXXIX-B4-339-2012 ER -