Ocena geometrične točnosti oblakov točk, pridobljenih z UAV lidarskimi sistemi

magistrsko delo

David Hovnik (Author), Dejan Grigillo (Mentor), Mojca Kosmatin Fras (Co-mentor)

Abstract

V magistrski nalogi smo izvedli analizo geometrične točnosti oblakov točk, pridobljenih z daljinsko vodenim letalnikom, opremljenim z lidarskim sistemom za zajem podatkov. Analiza je bila izvedena po priporočilih standarda ASPRS (American Society of Photogrammetry and Remote Sensing): »ASPRS Positional Accuracy Standards for Geospatial Data«. V praktičnem preizkusu smo uporabili tri lidarske sisteme: DJI Zenmuse L1, DJI Zenmuse L2 in RIEGL miniVUX-2UAV. Cilj naloge je bil ugotoviti absolutno točnost in relativno natančnost pridobljenih oblakov točk celotnega obravnavanega območja kot tudi oblakov točk v posameznem snemalnem pasu. V nalogi smo preskusili tudi različne oblike tarč za signaliziranje oslonilnih in kontrolnih točk. Ugotovljeno je bilo, da vsi senzorji dosegajo točnost v okvirjih, ki jih navajajo proizvajalci. Prav tako se je izkazala pomembnost uporabe oslonilnih točk za višinsko točnost oblakov točk.

Keywords

geodezija;magistrska dela;GIG;lidar;UAV;točnost;natančnost;oblak točk;analiza tarč;

Data

Language:	Slovenian
Year of publishing:	2024
Typology:	2.09 - Master's Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[D. Hovnik]
UDC:	004:528.8.044.6(043.3)
COBISS:	196269571
Views:	53
Downloads:	30
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Assessment of the geometric accuracy of point clouds obtained by UAV lidar systems
Secondary abstract:	In the master's thesis, we performed an analysis of the geometric accuracy of point clouds obtained with a remote-controlled aircraft equipped with a lidar data acquisition system. The analysis was carried out according to the recommendations of the ASPRS (American Society of Photogrammetry and Remote Sensing) standard: "ASPRS Positional Accuracy Standards for Geospatial Data". In the practical test, we used three lidar systems: DJI Zenmuse L1, DJI Zenmuse L2 and RIEGL miniVUX-2UAV. The goal of the task was to determine the absolute accuracy and relative precision of the acquired point clouds of the entire considered area as well as the point clouds in the individual strip. In the task, we also tested different types of targets as control and check points. All sensors were found to achieve accuracies within the frames specified by the manufacturers. We have also shown the importance of control points for the height accuracy of the point clouds.
Secondary keywords:	geodesy;master thesis;accuracy;precision;point cloud;targets analysis;
Type (COBISS):	Master's thesis/paper
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	X, 46 str.
ID:	23751793