| Algorithms and methods of airborne laser scanning for forest measurements J Hyyppa Proceedings of the ISPRS working group VIII/2" Laser-scanners for forest and …, 2004 | 247 | 2004 |
| Radiometric calibration of LIDAR intensity with commercially available reference targets S Kaasalainen, H Hyyppa, A Kukko, P Litkey, E Ahokas, J Hyyppa, ... IEEE Transactions on Geoscience and Remote Sensing 47 (2), 588-598, 2008 | 147 | 2008 |
| Elevation accuracy of laser scanning-derived digital terrain and target models in forest environment J Hyyppä, U Pyysalo, H Hyyppä, A Samberg Proceedings of EARSeL-SIG-Workshop LIDAR, 14-17, 2000 | 106 | 2000 |
| Reconstructing tree crowns from laser scanner data for feature extraction U Pyysalo, H Hyyppa International Archives Of Photogrammetry Remote Sensing And Spatial …, 2002 | 104 | 2002 |
| HIGH-SCAN: The first European-wide attempt to derive single-tree information from laserscanner data J Hyyppä, M Schardt, H Haggrén, B Koch, U Lohr, HU Scherrer, ... Photogrammetric Journal of Finland 17 (2), 58-68, 2001 | 101 | 2001 |
| Absolute radiometric calibration of ALS intensity data: Effects on accuracy and target classification S Kaasalainen, U Pyysalo, A Krooks, A Vain, A Kukko, J Hyyppä, ... Sensors 11 (11), 10586-10602, 2011 | 96 | 2011 |
| Use of naturally available reference targets to calibrate airborne laser scanning intensity data A Vain, S Kaasalainen, U Pyysalo, A Krooks, P Litkey Sensors 9 (4), 2780-2796, 2009 | 72 | 2009 |
| Accuracy of laser scanning for DTM generation in forested areas JM Hyyppae, U Pyysalo, H Hyyppae, HGA Haggren, GS Ruppert Laser Radar Technology and Applications V 4035, 119-130, 2000 | 33 | 2000 |
| Viewshed analysis and visualization of landscape voxel models U Pyysalo, J Oksanen, T Sarjakoski 24th international cartographic conference, Santiago, Chile 15, 2009 | 31 | 2009 |
| Usability evaluation of a map-based multi-publishing service HM Flink, J Oksanen, U Pyysalo, M Rönneberg, LT Sarjakoski Advances in Cartography and GIScience. Volume 1: Selection from ICC 2011 …, 2011 | 23 | 2011 |
| A method to create a three-dimensional forest model from laser scanner data U Pyysalo The photogrammetric journal of Finland 17 (1), 34-42, 2000 | 20 | 2000 |
| Laser scanning of forest resources-some of the Finnish experience J Hyyppä, H Hyyppä, M Maltamo, X Yu, E Ahokas, U Pyysalo Proceedings of the scandlaser scientific workshop on airborne laser scanning …, 2003 | 19 | 2003 |
| Forest biomass estimation using ALOS PALSAR images in challenging natural forest area in Finland M Karjalainen, U Pyysalo, K Karila, J Hyyppa ALOS PI 2008 Symposium 664, 72, 2008 | 14 | 2008 |
| Tree crown determination using terrestrial imaging for laser scanned individual tree recognition U Pyysalo ISPRS Congress Istanbul. Commission III papers 35, 2004 | 10 | 2004 |
| Voxel approach to landscape modelling U Pyysalo, T Sarjakoski The International Archives of the Photogrammetry and Remote Sensing, Beijing …, 2008 | 8 | 2008 |
| Outlier highlighting for spatio-temporal data visualization U Pyysalo, J Oksanen Cartography and Geographic Information Science 40 (3), 165-171, 2013 | 7 | 2013 |
| Tree species classification using ers sar and modis ndvi images M Törmä, J Lumme, U Pyysalo, N Patrikainen, K Luojus International Archives of Photogrammetry Remote Sensing and Spatial …, 2004 | 6 | 2004 |
| Generation of elevation models in wooded areas from a three dimensional point cloud measured by laser scanning U Pyysalo MSc Thesis, Helsinki University of Technology, Espoo, Finland, 2000 | 6 | 2000 |
| Geometric shape of the tree extracted from laser scanning data U Pyysalo, H Hyyppä International Society for Photogrammetry and Remote Sensing Á/ISPRS …, 2002 | 5 | 2002 |
| Visualization of uncertain catchment boundaries and its influence on decision making U Pyysalo, J Oksanen AGILE Digital Editions, 2014 | 3 | 2014 |
