TY - JOUR A1 - Niu, L. A1 - Song, Y. T1 - A SCHEMA FOR EXTRACTION OF INDOOR PEDESTRIAN NAVIGATION GRID NETWORK FROM FLOOR PLANS JO - Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Archives VL - XLI-B4 SP - 325 EP - 330 Y1 - 2016/06/13 PB - Copernicus Publications SN - 2194-9034 UR - https://isprs-archives.copernicus.org/articles/XLI-B4/325/2016/ L1 - https://isprs-archives.copernicus.org/articles/XLI-B4/325/2016/isprs-archives-XLI-B4-325-2016.pdf DO - 10.5194/isprs-archives-XLI-B4-325-2016 ER -