Abstract
Abstract. UAV surveys have become more and more popular over the last few years, driven by manufacturers and software suppliers who promise high accuracy at low cost. But, what are the real possibilities offered by this kind of sensor? In this article, we investigate in detail the possibilities offered by photogrammetric UAV mapping solutions through numerous practical experiments and compare them to a reference high grade LiDAR-Photogrammetric acquisition. This paper first focuses on aerial triangulation and dense matching accuracy comparison of different data acquisition units (2 types of camera) and processing softwares (1 open source and 2 proprietary softwares). Finally, the opportunities offered by these different approaches are studied in detail on standard aerial applications such as power lines detection, forest and urban areas mapping, in comparison with our reference dataset.
Highlights
Since half a decade, UAV survey has become a must have for mapping purpose, promising high accuracy at low cost (Colomina and Molina, 2014)
We will try to draw a realistic portrait of what could be expected from photogrammetric UAV mapping solution
The paper focuses on the comparison of performance of different data acquisition units (2 types of camera) and processing softwares (1 open source and 2 proprietary softwares)
Summary
Since half a decade, UAV survey has become a must have for mapping purpose, promising high accuracy at low cost (Colomina and Molina, 2014). Beyond the attractive message of some manufacturers and software suppliers, what are the real possibilities offered by this kind of sensor?. We will try to draw a realistic portrait of what could be expected from photogrammetric UAV mapping solution. The paper focuses on the comparison of performance of different data acquisition units (2 types of camera) and processing softwares (1 open source and 2 proprietary softwares). Aerial-triangulation and dense matching accuracy will be benchmarked relatively to a high grade LiDAR-Photogrammetric acquisition. We will study the opportunities offered by these different approaches on standard aerial applications such as power lines, forest or urban areas mapping.
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