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November 5, 2025

DJIs new UAV Lidar System – the L3

DJI has recently announced the release of its new UAV LiDAR system — the DJI Zenmuse L3. For those engaged in UAV-based LiDAR research and applications, this long-anticipated successor to the L2 represents a significant technological advancement. The cost of professional-grade airborne LiDAR systems with high-accuracy capabilities has remained relatively stable over the past years. For example, some of the...
Categories Crown Structure/Forest decline/LiDAR/Park3D/Point Clouds/Quadrocopter/Workflow
June 20, 2025

FSU Jena wins the SPSG Park3D Project! Updated

First L2 LiDAR data capture over Park Sanssouci – (2025-07-20)  Priority was on detailed and dense vegetation point clouds. The L2 was used in 120m AGL with 240khz capture rate and 5-returns activated and 70% track overlap at 8m/s speed.  We generated a 2.4billion point cloud description. The following animation is from a downsampled version of only 500 mio points....
Categories Crown Structure/Forest decline/L2/LiDAR/Park3D/Point Clouds/Quadrocopter/Workflow
April 3, 2021

Reflectance Calibration with Phantom 4M Multispectral data (Updated 14-05-2021)

Last Update: 14.5.2021 There was some confusion in the past on how to process the Phantom 4M Multispectral data to “reflectance” level. Here a short summary for Agisoft Metashape 1.7.2 with a 50% reflectance panel from Micasense (update: now its from SphereOptics). In general: 1. the P4M sun illu. sensor works for normalizing the within flight campaign variations while 2....
Categories Phantom/Quadrocopter/Reviews/Workflow
February 26, 2021

Die EU Drohnenverordnung

Die neue EU Drohnenverordnung ist in Kraft getreten. Sie gilt im Prinzip bereits seit 1.1.2021. Was hat sich geändert? Einiges! Nach der neuen Verordnung sind alle derzeit im Betrieb befindlichen Drohnen keine zertifizierten Drohnen. Hier hinkt die Industrie der Verordnung hinterher. Die Verordnung differenziert in der offenen Kategorie “OPEN” nach dem Grad der Gefährdung, der von einer Drohne ausgehen könnte...
Categories NoFly Zones/Phantom/Quadrocopter/Reviews
July 26, 2020

UPDATE 12.12.2020: Beech Tree Damage Analysis in the Historical Parks – South-West of Berlin

UPDATE 12.12.2020: First classification within the SPSG park regions of four different damage categories was done in December 2020 using the TensorFlow CNN implementation. The first test area is the landscape park area “Glienicke” in the south-west of Berlin. The area shows a severe degradation of beech trees on some locations and is as of now not open for the...
Categories "forest decline"/Crown Structure/Forest decline/Quadrocopter
September 28, 2018

The Hainich Flight Campaign

At the end of August 2018 a consortium was initiated by Dr. C. Thiel (DLR) to start a flight campaign within the Hainich national parc area in Thuringia (DLR Jena: Dr. C. Thiel, FSU Jena: Dr. S. Hese, University Göttingen (LS für Bioklimatologie, Prof. Dr. A. Knohl / Dipl.-Ing F. Tiedemann), national parc Hainich: Manfred Grossmann & Andreas Henkel).  The region is...
Categories Agisoft/Crown Structure/Phantom/Point Clouds/Quadrocopter/Workflow