Accuracy of Orthomosaic Generated by Different Methods in Example of UAV Platform MUST Q

2nd International Conference on Innovative Materials, Structures and Technologies

Liba, N.^1 ; Berg-Jürgens, J.^1

Estonian University of Life Sciences, Institute of Forestry and Rural Engineering, Tartu, Estonia^1

关键词: Aerial image processing;    Energy companies;    Error limits;    Ground control points;    Overhead power lines;    Pixel size;    Time spent;    UAV platform;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/96/1/012041/pdf
DOI  :  10.1088/1757-899X/96/1/012041

来源: IOP

【 摘 要 】

Development of photogrammetry has reached a new level due to the use of unmanned aerial vehicles (UAV). In Estonia, the main areas of use of UAVs are monitoring overhead power lines for energy companies and fields in agriculture, and estimating the use of stockpile in mining. The project was carried out by the order of the City of Tartu for future road construction. In this research, automation of UAV platform MUST Q aerial image processing and reduction of time spent on the use of ground control points (GCP) is studied. For that two projects were created with software Pix4D. First one was processed automatically without GCP. Second one did use GCP, but all the processing was done automatically. As the result of the project, two orthomosaics with the pixel size of 5 cm were composed. Projects allowed ensuring accuracy limit of three times of the pixel size. The project that turned out to be the most accurate was the one using ground control points to do the levelling, which remained within the error limit allowed and the accuracy of the orthomosaic was 0.132 m. The project that didn't use ground control points had the accuracy of 1.417 m.