ISPRS-Archives The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Archives Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9034 Copernicus Publications Göttingen, Germany 10.5194/isprs-archives-XLII-4-1-2018 PREFACE – ISPRS TECHNICAL COMMISSION IV MIDTERM SYMPOSIUM 2018 Zlatanova S. ¹ Dragicevic S. ² Sithole G. ³ 1 President of TC IV, University of New South Wales, Sidney, Australia 2 Vice President of TC IV, Simon Fraser University, Burnaby, Canada 3 Secretary, University of Cape Town, Cape Town, South Africa 19 09 2018 XLII-4 1 3 Copyright: © 2018 S. Zlatanova et al. 2018 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://isprs-archives.copernicus.org/articles/XLII-4/1/2018/isprs-archives-XLII-4-1-2018.html The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XLII-4/1/2018/isprs-archives-XLII-4-1-2018.pdf