Mapping of a river using close range photogrammetry technique and unmanned aerial vehicle system

8th International Symposium of the Digital Earth

地球科学;计算机科学

Room, M.H.M.^1 ; Ahmad, A.^1

Department of Geoinformation, Faculty of Geoinformation and Real Estate, Universiti Teknologi Malaysia, Malaysia^1

关键词: Close range photogrammetry;    Direct contact;    Ground resolution;    Ground surfaces;    Rapid data acquisition;    Remote sensing system;    Terrestrial photogrammetries;    Unmanned aerial vehicle systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/18/1/012061/pdf
DOI  :  10.1088/1755-1315/18/1/012061

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Photogrammetry is a technique that can be used to record the information of any feature without direct contact. Nowadays, a combination of photogrammetry and Unmanned Aerial Vehicle (UAV) systems is widely used for various applications, especially for large scale mapping. UAV systems offer several advantages in terms of cost and image resolution compared to terrestrial photogrammetry and remote sensing system. Therefore, a combination of photogrammetry and UAV created a new term which is UAV photogrammetry. The aim of this study is to investigate the ability of a UAV system to map a river at very close distance. A digital camera is attached to the Hexacopter UAV and it is flown at 2 m above the ground surface to produce aerial photos. Then, the aerial photos are processed to create two photogrammetric products as output. These are mosaicked orthophoto and digital image. Both products are assessed (RSME). The RSME of X and Y coordinates are ±0.009 m and ±0.033 m respectively. As a conclusion, photogrammetry and the UAV system offer a reliable accuracy for mapping a river model and advantages in term of cost-efficient, high ground resolution and rapid data acquisition.