TY - JOUR A1 - Mahphood, A. A1 - Arefi, H. T1 - IMPROVED TORNADO METHOD FOR GROUND POINT FILTERING FROM LIDAR POINT CLOUDS JO - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Annals VL - X-4/W1-2022 SP - 429 EP - 436 Y1 - 2023/01/14 PB - Copernicus Publications SN - 2194-9050 UR - https://isprs-annals.copernicus.org/articles/X-4-W1-2022/429/2023/ L1 - https://isprs-annals.copernicus.org/articles/X-4-W1-2022/429/2023/isprs-annals-X-4-W1-2022-429-2023.pdf DO - 10.5194/isprs-annals-X-4-W1-2022-429-2023 ER -