TY - JOUR A1 - Mallet, C. A1 - Lafarge, F. A1 - Poreba, M. A1 - Wu, T. A1 - Bahl, G. A1 - Yu, M. A1 - Garioud, A. A1 - Chen, Y. A1 - Jiang, S. A1 - Yang, M. Y. A1 - Paparoditis, N. T1 - PREFACE: THE 2021 EDITION OF THE XXIVTH ISPRS CONGRESS JO - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Annals VL - V-2-2021 SP - 1 EP - 5 Y1 - 2021/06/17 PB - Copernicus Publications SN - 2194-9050 UR - https://isprs-annals.copernicus.org/articles/V-2-2021/1/2021/ L1 - https://isprs-annals.copernicus.org/articles/V-2-2021/1/2021/isprs-annals-V-2-2021-1-2021.pdf DO - 10.5194/isprs-annals-V-2-2021-1-2021 ER -