Use of low-cost UAV photogrammetry to analyze the accuracy of a digital elevation model in a case study

Kršák, Branislav; Blištán, Peter; Paulíková, Alena; Puškárovà, Paula; Kovanič, Ľudovít; Palková, Jana; Zelizňaková, Vladislava

doi:10.1016/j.measurement.2016.05.028

Cited by 145 publications

(78 citation statements)

References 11 publications

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“…Ground-based LiDAR, photogrammetry, and hand-held devices can now describe ephemeral gully erosion using millimeter-scale grids with millimeter-scale errors 49 INTERNATIONAL GULLY EROSION SYMPOSIUM (Momm et al, 2013a;Wells et al, 2017;Castillo et al, 2018). Moreover, the cost of such technology could be as little as $6000 for all hardware and software required for a selfcontained, ground-based photogrammetric system (Kršák et al, 2016;Wells et al, 2016; see also Castillo et al, 2015Castillo et al, , 2018.…”

Section: Rapid Development and Availability Of Geospatial Technologymentioning

confidence: 99%

Gully erosion processes, disciplinary fragmentation, and technological innovation

Bennett

Wells

2018

Earth Surf Processes Landf

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The development and evolution of gullies on soil‐mantled hillslopes can devastate agricultural regions and cause widespread soil and landscape degradation. Since 2000, international symposia have been organized to address gully erosion processes, and this paper and special issue provide additional context for the 7th International Symposium on Gully Erosion held at Purdue University in 2016. Several important themes of gully erosion emerged during this symposium that warranted additional discussion here. These topics include the importance and impact of technology transfer, disciplinary fragmentation as an impediment for research advancement, the difficulty in defining the erodibility of sediment within gullies, and the opportunities afforded by remote sensing technology. It is envisioned that such symposia will continue to enhance the capabilities of researchers and practitioners to monitor, model, and manage these important geomorphic processes and to mitigate landscape degradation. © 2018 John Wiley & Sons, Ltd.

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Section: Rapid Development and Availability Of Geospatial Technologymentioning

confidence: 99%

Gully erosion processes, disciplinary fragmentation, and technological innovation

Bennett

Wells

2018

Earth Surf Processes Landf

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“…Due to the technological development of the miniaturisation process and the decreasing production costs of the components used in UAV construction, the vehicles are becoming more and more popular as surveying platforms in geophysical research. Their versatile use in geophysics, geodesy, and spatial planning has been described by Lin (2008), Remondino et al (2012), Siebert and Teizer (2014), Li et al (2016), Kršák et al (2016) and Torres et al (2016). The research material obtained with UAVs, in the form of images or point clouds (Axelsson 2000), can provide the basis for many analyses, such as analyses of visibility.…”

Section: Introductionmentioning

confidence: 99%

Geovisualisation of Relief in a Virtual Reality System on the Basis of Low-Level Aerial Imagery

Halik

Smaczyński

2017

Pure Appl. Geophys.

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Abstract-The aim of the following paper was to present the geomatic process of transforming low-level aerial imagery obtained with unmanned aerial vehicles (UAV) into a digital terrain model (DTM) and implementing the model into a virtual reality system (VR). The object of the study was a natural aggretage heap of an irregular shape and denivelations up to 11 m. Based on the obtained photos, three point clouds (varying in the level of detail) were generated for the 20,000-m 2 -area. For further analyses, the researchers selected the point cloud with the best ratio of accuracy to output file size. This choice was made based on seven control points of the heap surveyed in the field and the corresponding points in the generated 3D model. The obtained several-centimetre differences between the control points in the field and the ones from the model might testify to the usefulness of the described algorithm for creating large-scale DTMs for engineering purposes. Finally, the chosen model was implemented into the VR system, which enables the most lifelike exploration of 3D terrain plasticity in real time, thanks to the first person view mode (FPV). In this mode, the user observes an object with the aid of a Head-mounted display (HMD), experiencing the geovisualisation from the inside, and virtually analysing the terrain as a direct animator of the observations.

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“…The images were acquired from a commercial off‐the‐shelf (COTS) UAV system, selected for its ease of deployment – the aircraft and associated control systems fit in a lightweight backpack easily transported when walking on the moraine – while the low cost allows risking flight in challenging conditions. The DJI Phantom 3 Professional and Advanced have demonstrated appropriate characteristics to the mapping task (Bangen et al., ; Kršák et al., ; Cook, ). This UAV has an integral Sony EXMOR f/2.8 digital camera with 4000 × 3000 pixels and a 94° field of view.…”

Section: Methodsmentioning

confidence: 99%

Investigating snowpack volumes and icing dynamics in the moraine of an Arctic catchment using UAV photogrammetry

Bernard

Friedt

Tölle

et al. 2017

The Photogrammetric Record

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Methods for assessing the contribution of the proglacial moraine into the water budget of an Arctic glacier are investigated. High spatial resolution elevation models at different seasons are needed to estimate the volume of ice and snow accumulated during winter in this part of the catchment basin and released into rivers during the melting season. Lidar currently provides the highest resolution for the generation of digital elevation models (DEMs). This paper considers the complementary use of a commercial off-the-shelf DJI Phantom 3 Professional unmanned aerial vehicle (UAV) for acquiring aerial photography, combined with structure-from-motion (SfM) analysis, for DEM computation. DEM differences between datasets acquired in April (maximum snow accumulation) and September (minimum snow cover) yield a volume difference attributed either to snow cover or icing formation. Repeated measurements over a short period highlight the processes of snow-cover storage in the moraine and melting dynamics.

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Use of low-cost UAV photogrammetry to analyze the accuracy of a digital elevation model in a case study

Cited by 145 publications

References 11 publications

Gully erosion processes, disciplinary fragmentation, and technological innovation

Gully erosion processes, disciplinary fragmentation, and technological innovation

Geovisualisation of Relief in a Virtual Reality System on the Basis of Low-Level Aerial Imagery

Investigating snowpack volumes and icing dynamics in the moraine of an Arctic catchment using UAV photogrammetry

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