May 27, 2026

The Deciduous Tree Crown Segmentation Challenge

  Last update: 2026-07-19 Deciduous tree crown segmentation is widely recognized as a particularly challenging task. While various approaches for conifer crown delineation have proven successful, their transferability to deciduous forest stands remains limited. Accurate crown segmentation constitutes a critical prerequisite for assessing the vitality of individual deciduous trees based on spectral or structural metrics. In particular, in dense deciduous...
Categories L2/LiDAR/Park3D/Point Clouds/Uncategorized
March 31, 2026

Micasense Altum-PT Data Capturing and Processing – the Park3D Project

  Another report from the Park3D project in cooperation with SPSG (Stiftung Preußische Schlösser & Gärten). Using multispectral cameras on UAV platforms has been not so straight forward in the past and the situation hasn’t changed much. If you are used to the Mavic 3 Multispectral RTK or the Phantom 4 Multispectral RTK systems than the integrated way how DJI...
Categories Agisoft/Altum-PT/Forest decline/Park3D/Reviews/Workflow
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...
Categories Crown Structure/Forest decline/L2/LiDAR/Park3D/Point Clouds/Quadrocopter/Workflow
September 7, 2022

environMENTAL EU-Project with 9 Mio Euro budget started with Kick-Off Meeting in Volterra/Italy

Kickoff Projekt Meeting in der Toskana (Volterra) 6.-9.9.2022. Das von der EU mit 10 Mio Euro geförderte Projekt environMENTAL unter der Leitung von Prof. Dr. Gunter Schumann von der Charité und der Fudan-Universität Shanghai wird die Auswirkungen von Klimaveränderungen, Umweltverschmutzung, Urbanität, regionalen sozioökonomischen Bedingungen sowie von durch die Covid19-Pandemie hervorgerufenem psychosozialen Stress auf die Gesundheit des Gehirns untersuchen und die...
Categories COVID-19/urban
August 19, 2022

3D point cloud of the 1000 years old Ivenacker Oack Trees

Its always a challenge to work on vegetation point cloud renderings with multi view image matching concepts. In complex 3-dimensional environments and for horizontal image capturing – using a drone is often just not possible. Here horizontal imaging can be an affordable alternative to TLS (Terrestrial Lidar Scanning) systems. Drawback of most OTS consumer electronics camera systems is the missing...
Categories Agisoft/Crown Structure/Point Clouds/Workflow
June 19, 2022

Oblique and cross-grid UAV imaging flight plans – a sneak preview of the analysis of resulting 3D point cloud properties for deciduous forest surfaces – low cost 3D mapping with the Phantom 4R (RTK)

Flight plans / photogrammetry / structure from motion / Metashape / oblique imaging / 3D point clouds / Lastools / Phantom 4R RTK / beech tree / deciduous trees / forest stand structure “Oblique and cross-grid UAV imaging flight plans – a sneak preview of the analysis of resulting 3D point cloud properties for deciduous forest surfaces” by Sören Hese....
Categories Agisoft/Crown Structure/Phantom/Point Clouds/Workflow
June 15, 2022

UPDATE: Stellenausschreibung in urbaner Fernerkundung! -> 20.8. verlängert!

Wissenschaftliche:r Mitarbeiter:in in urbaner Fernerkundung In Vollzeit (100% / 40 Wochenstunden) befristet für 21 Monate zu besetzen. Das EU Projekt environMENTAL erforscht den Einfluss von Umweltfaktoren und psychosozialen Stress durch die COVID-19 Pandemie auf die Entwicklung des menschlichen Gehirns und deren Gesundheit. https://www.environmental-project.org. Hierfür werden Patientendaten aus medizinischen Datenbanken über präzise Geolokalisierung mit Satellitendaten und abgeleiteten Satellitendatenprodukten auf räumliche Korrelationen hin...
Categories Uncategorized
March 18, 2022

Apple M4Max and M1Max 24C and 32C and Agisoft Metashape – a Performance Surprise (Updated)

Update: 20.10.2025: added the 40C M4Max performance comparison – 16Inch with 128GB RAM Update: 5.4.2022: added the 32C performance of the MBP21 16Inch with 64GB RAM Short update to the benchmark analysis I did with the M4Max and Agisoft Metashape. The M4Max halves the processing time of the M1Max. Here the numbers (this time based on Metashape 2.2.2 … I...
Categories Agisoft/Reviews/Software/Workflow