UAV photogrammetry for topographic monitoring of coastal areas

Gonçalves, J.; Henriques, Renato F.

doi:10.1016/j.isprsjprs.2015.02.009

Cited by 508 publications

(370 citation statements)

References 17 publications

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“…Using UAVs is now widespread across a range of disciplines (Anderson and Gaston 2013;Liu et al 2014;Smith et al 2016). The most popular environmental applications are: landslide monitoring (Lucieer et al 2014a), measuring changes in coastal morphology (Casella et al 2014;Gonçalves and Henriques 2015;Papakonstantinou et al 2016), monitoring glacier movement (Immerzeel et al 2014;Ryan et al 2015), studying Antarctic moss beds (Lucieer et al 2014b), soil erosion monitoring (d'Oleire-Oltmanns et al 2012), fluvial geomorphology (Mori et al 2002;Tamminga et al 2015;Woodget et al 2015) and forest research (Tang and Shao 2015;Wallace et al 2012). These studies are conducted using different UAV platforms delivered by various manufacturers (i.e., hybrid, flapping-wing, fixed-wing, coaxial, duct-fan, single rotor, and multi-rotor).…”

Section: Methodsmentioning

confidence: 99%

Application of Low-Cost Fixed-Wing UAV for Inland Lakes Shoreline Investigation

Templin

Popielarczyk

Kosecki

2017

Pure Appl. Geophys.

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Abstract-One of the most important factors that influences the performance of geomorphologic parameters on urban lakes is the water level. It fluctuates periodically, causing shoreline changes. It is especially significant for typical environmental studies like bathymetric surveys, morphometric parameters calculation, sediment depth changes, thermal structure, water quality monitoring, etc. In most reservoirs, it can be obtained from digitized historical maps or plans or directly measured using the instruments such as: geodetic total station, GNSS receivers, UAV with different sensors, satellite and aerial photos, terrestrial and airborne light detection and ranging, or others. Today one of the most popular measuring platforms, increasingly applied in many applications is UAV. Unmanned aerial system can be a cheap, easy to use, on-demand technology for gathering remote sensing data. Our study presents a reliable methodology for shallow lake shoreline investigation with the use of a low-cost fixed-wing UAV system. The research was implemented on a small, eutrophic urban inland reservoir located in the northern part of Poland-Lake Suskie. The geodetic TS, and RTK/GNSS measurements, hydroacoustic soundings and experimental aerial mapping were conducted by the authors in 2012-2015. The article specifically describes the UAV system used for experimental measurements, the obtained results and the accuracy analysis. Final conclusions demonstrate that even a lowcost fixed-wing UAV can provide an excellent tool for accurately surveying a shallow lake shoreline and generate valuable geoinformation data collected definitely faster than when traditional geodetic methods are employed.

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Section: Methodsmentioning

confidence: 99%

Application of Low-Cost Fixed-Wing UAV for Inland Lakes Shoreline Investigation

Templin

Popielarczyk

Kosecki

2017

Pure Appl. Geophys.

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“…In addition, an intermediate aim of this paper was to conduct an independent check of the situational and height accuracy of the photogrammetric model obtained in the georeference process. That was why additional check points were established in the area of the study, constituting an independent control network (Gonçalves and Henriques 2015). It was assumed that the check of the obtained photogrammetric model would consist in comparing the coordinates of the afore-mentioned control points measured with the Global Navigation Satellite System Real Time Kinematic (GNSS RTK) technique with the coordinates of the same points obtained from the numerical terrain model.…”

Section: Planning the Uav Flightmentioning

confidence: 99%

“…The platform used in the study was equipped with an inertial measurement unit (IMU) and a GPS receiver; however, the coordinates were only used to stabilize the flight in the GPS mode and on the basis of available research (Gonçalves and Henriques 2015). It was assumed that the currently attainable accuracy levels are not sufficient for photogrammetric purposes.…”

Section: Conducting the Flightmentioning

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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“…It is widely used in the research, i.e. (Gonçalves and Henriques, 2015;Leon et al, 2015;Javernick et al, 2014;Uysal et al, 2015), because of its solid performance and relatively efficient processing.…”

Section: Photogrammetric Uas Data Processingmentioning

confidence: 99%

“…Agisoft PhotoScan is a proprietary package, thus the algorithms utilized during geoprocessing are not fully documented (Gonçalves and Henriques, 2015). The final products of the standard workflow, described by manufacturer (Agisoft, 2013) are an orthomosaic and a Digital Surface Model (DSM).…”

Section: Photogrammetric Uas Data Processingmentioning

confidence: 99%

Overland Flow Analysis Using Time Series of Suas-Derived Elevation Models

Jeziorska¹,

Mitášová²,

Petrášová³

et al. 2016

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:With the advent of the innovative techniques for generating high temporal and spatial resolution terrain models from Unmanned Aerial Systems (UAS) imagery, it has become possible to precisely map overland flow patterns. Furthermore, the process has become more affordable and efficient through the coupling of small UAS (sUAS) that are easily deployed with Structure from Motion (SfM) algorithms that can efficiently derive 3D data from RGB imagery captured with consumer grade cameras. We propose applying the robust overland flow algorithm based on the path sampling technique for mapping flow paths in the arable land on a small test site in Raleigh, North Carolina. By comparing a time series of five flights in 2015 with the results of a simulation based on the most recent lidar derived DEM (2013), we show that the sUAS based data is suitable for overland flow predictions and has several advantages over the lidar data. The sUAS based data captures preferential flow along tillage and more accurately represents gullies. Furthermore the simulated water flow patterns over the sUAS based terrain models are consistent throughout the year. When terrain models are reconstructed only from sUAS captured RGB imagery, however, water flow modeling is only appropriate in areas with sparse or no vegetation cover.

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UAV photogrammetry for topographic monitoring of coastal areas

Cited by 508 publications

References 17 publications

Application of Low-Cost Fixed-Wing UAV for Inland Lakes Shoreline Investigation

Application of Low-Cost Fixed-Wing UAV for Inland Lakes Shoreline Investigation

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

Overland Flow Analysis Using Time Series of Suas-Derived Elevation Models

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