A publication by Dr. Harri Kaartinen and his team is the top cited paper in the Remote Sensing journal in years 2012-2014. The article An International Comparison of Individual Tree Detection and Extraction Using Airborne Laser Scanning is based on the work the project “Tree Extraction” coordinated by CoE-LaSR researchers and organized by EuroSDR (European Spatial data Research) and ISPRS (International Society of Photogrammetry and Remote Sensing). The purpose of the project was to evaluate the quality, accuracy, and feasibility of automatic tree extraction methods, mainly based on laser scanner data.