Evaluating the accuracy of Digital Surface Models generated from imagery acquired with Unmanned Aerial Vehicles

- Authors: Minh Tuyet Dang
Affiliations:
Thuyloi University, Ha Noi, Vietnam
- *Corresponding:This email address is being protected from spambots. You need JavaScript enabled to view it.
- Received: 23rd-Apr-2024
- Revised: 28th-May-2024
- Accepted: 2nd-June-2024
- Online: 31st-Aug-2024
Abstract:
This paper assesses the accuracy of the UAV-based Digital Surface Model (DSM) in a small area with complicated terrain based on the number of ground control points determined by GNSS technology. Experimental results obtained at the mineral exploitation and processing area of Tan Tien Co., Ltd., Yen Bai province show that 5 ground control points are the minimum number needed for image correction to generate DSM with a mean square error of 14.744 cm. In addition, the optimal number of ground control points provides the highest accuracy for DSM models while also meeting the required accuracy for creating a 1:1000 scale map of 20 points. The results of the paper can be used as a reference when choosing ground control points to establish DSM for areas with areas and topographical characteristics similar to the research area of the paper.

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