Digital Surface Models (DSM) generated by image-based scene reconstruction from Unmanned Aerial Vehicle (UAV) and Terrestrial Laser Scanning (TLS)point clouds are highly distinguished in terms of resolution and accuracy. This leads to a situation where users have to choose the most beneficial product to fulfill their needs. In the current study, these techniques no longer compete but complement each other. Experiments were implemented to verify the improvement of vertical accuracy by introducing different amounts and configurations of Terrestrial Laser scans in the photogrammetric Structure from Motion (SfM) workflow for high-resolution 3D-scene reconstruction. Results show that it is possible to significantly improve (∼ 49% ) the vertical accuracy of DSMs by introducing a TLS point clouds. However, accuracy improvement is highly associated with the number of introduced Ground Control Points (GCP) in the SfM workflow procedure.
|Number of pages||7|
|Journal||International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives|
|State||Published - 6 Aug 2020|
|Event||2020 24th ISPRS Congress - Technical Commission I - Nice, Virtual, France|
Duration: 31 Aug 2020 → 2 Sep 2020
Bibliographical noteFunding Information:
The authors and project participants thank the University of Zagreb’s Faculty of Geodesy for supporting the project by providing a Terrestrial Laser Scanner and expert advice. Also, we thank team member Maja Grisonic. We are grateful for partial financial support provided thru EMODNet Geology III project financed by the European Union under Regulation (EU) No 508/2014 of the European Parliament and of the Council of 15 May 2014 on the European Maritime and Fisheries Fund and Cost Action ES1402 „Evaluation of Ocean Syntheses“.
© 2020 International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives.
- SfM workflow
- Vertical accuracy
- point cloud
ASJC Scopus subject areas
- Information Systems
- Geography, Planning and Development