TY - JOUR A1 - Coors, V. A1 - Rodrigues, P. A1 - Ellul, C. A1 - Zlatanova, S. A1 - Laurini, R. A1 - Rumor, M. T1 - PREFACE JO - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Annals VL - VIII-4/W1-2021 SP - 1 EP - 2 Y1 - 2021/09/03 PB - Copernicus Publications SN - 2194-9050 UR - https://isprs-annals.copernicus.org/articles/VIII-4-W1-2021/1/2021/ L1 - https://isprs-annals.copernicus.org/articles/VIII-4-W1-2021/1/2021/isprs-annals-VIII-4-W1-2021-1-2021.pdf DO - 10.5194/isprs-annals-VIII-4-W1-2021-1-2021 ER -