Development of a methodological approach for the accurate measurement of slope changes due to landslides, using digital photogrammetry

González-Dı́ez, Alberto; Fernández-Maroto, Gema; Doughty, M. W.; Terán, J.R. Díaz de; Bruschi, Viola María; Cardenal, J.; Pérez, José Luís; Mata, Emilio Martínez; Delgado, Jorge

doi:10.1007/s10346-013-0413-5

Cited by 29 publications

(17 citation statements)

References 31 publications

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“…Nevertheless, as had been tested in previous studies [5,16,17,[39][40][41], it was possible to transfer points between different campaigns (second-order GCPs), taking one of the surveys as common reference, thereby reducing the field work in a cost-saving technique, if the points are stable, unambiguously identifiable and well distributed. This procedure involves measuring points in the reference flight and calculating their coordinates in the corresponding CRS by means of spatial intersection (PhotoScan employes a collinearity model, as other conventional photogrammetric software), and transferring them as GCPs to the other flights.…”

Section: Georeferencing and Flight Orientationmentioning

confidence: 99%

“…In the case of medium to high resolution studies, with landslides of a diachronic evolution in which processes of reactivation separated in time take place [4,5], aerial photogrammetric techniques are very suitable and therefore their use is increasingly widespread [5][6][7][8][9][10][11][12][13][14][15][16][17], sometimes combined with LiDAR [5,10,12,16] or global navigation satellite system (GNSS) techniques [8]. In these for the automatic detection of movements of the terrain surface from the orthoimages have been proposed, as well as techniques of image co-registration [30,37,38,42].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Landslide Evolution Affecting Olive Groves Using UAV and Photogrammetric Techniques

et al. 2016

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This paper deals with the application of Unmanned Aerial Vehicles (UAV) techniques and high resolution photogrammetry to study the evolution of a landslide affecting olive groves. The last decade has seen an extensive use of UAV, a technology in clear progression in many environmental applications like landslide research. The methodology starts with the execution of UAV flights to acquire very high resolution images, which are oriented and georeferenced by means of aerial triangulation, bundle block adjustment and Structure from Motion (SfM) techniques, using ground control points (GCPs) as well as points transferred between flights. After Digital Surface Models (DSMs) and orthophotographs were obtained, both differential models and displacements at DSM check points between campaigns were calculated. Vertical and horizontal displacements in the range of a few decimeters to several meters were respectively measured. Finally, as the landslide occurred in an olive grove which presents a regular pattern, a semi-automatic approach to identifying and determining horizontal displacements between olive tree centroids was also developed. In conclusion, the study shows that landslide monitoring can be carried out with the required accuracy-in the order of 0.10 to 0.15 m-by means of the combination of non-invasive techniques such as UAV, photogrammetry and geographic information system (GIS).

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Section: Georeferencing and Flight Orientationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Landslide Evolution Affecting Olive Groves Using UAV and Photogrammetric Techniques

et al. 2016

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“…may be prepared by means of 3D digital stereoplotting. In this sense, not only single landslides but also the identification of unstable slopes in a region may be analyzed with these techniques, starting from high-resolution DEMs and 3D inventories [22,44,47]. In addition, if data from different surveys are available, it becomes possible to study landslide evolution.…”

Section: Methodsmentioning

confidence: 99%

“…For the analysis of single landslides, two approaches are available: the first is based on a comparison between DEMs from different flights, calculating distances and volumes [1,[7][8][9][10][11][13][14][15][16][17][18][19][20][21][22][23][24][25][26][29][30][31][32][36][37][38]48,52]; the second approach consists of a comparison between points and other elements identified without any ambiguity between the different surveys, enabling the determination of 3D displacement vectors for accurate identification of the landslide kinematics [10,11,[13][14][15][16][17][18]21,26,29,30,32,[36][37][38]. In this paper the quantitative analysis of ground changes will be approached by comparing different DTMs.…”

Section: Methodsmentioning

confidence: 99%

Assessment of the Evolution of a Landslide Using Digital Photogrammetry and LiDAR Techniques in the Alpujarras Region (Granada, Southeastern Spain)

et al. 2017

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Abstract:In this work a detailed analysis of the temporal evolution of the Almegíjar landslide is presented. It is a rock slide located in the Alpujarras region (Granada, Spain) that has developed over the last 30 years. Six datasets and photogrammetric flights corresponding to the years 1956, 1984, 1992, 2001, 2008, and 2010 were surveyed. The more recent flight of 2010 combined an aerial digital camera and a LiDAR sensor and was oriented by means of in-flight data and tie points. This 2010 flight allowed for the generation of a reliable and high-precision Digital Terrain Model (DTM). The other flights were oriented using second-order ground control points transferred from the 2010 flight, and the corresponding DTMs were prepared by automatic matching and subsequent editing from the stereoscopic models. After comparing the DTMs of different dates, it has been observed that the landslide was triggered after 1984 and since then has evolved in an irregular pattern with periods of variable activity. On average, the ground surface dropped more than 8 m in depleted zones and rose nearly 4 m in the accumulation zones, with a velocity catalogued as very slow (about 15-30 cm/year) over a time span corresponding to a degree VIII of diachroneity. The total volume of the mobilized mass of this large contemporary slide was about 300 × 10 3 m 3 .

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“…Following the methodology suggested in previous studies [69], planimetric and altimetric values of control points from the PNOA project were used for georeferencing and validation of UAV images. Some of them were obtained from the aerotriangulation of the PNOA, while others from the LiDAR point clouds.…”

Section: Data Acquisition and Processingmentioning

confidence: 99%

New Perspectives for UAV-Based Modelling the Roman Gold Mining Infrastructure in NW Spain

et al. 2018

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This contribution discusses the potential of UAV-assisted (unmanned aerial vehicles) photogrammetry for the study and preservation of mining heritage sites using the example of Roman gold mining infrastructure in northwestern Spain. The study area represents the largest gold area in Roman times and comprises 7 mining elements of interest that characterize the most representative examples of such ancient works. UAV technology provides a non-invasive procedure valuable for the acquisition of digital information in remote, difficult to access areas or under the risk of destruction. The proposed approach is a cost-effective, robust and rapid method for image processing in remote areas were no traditional surveying technologies are available. It is based on a combination of data provided by aerial orthoimage and LiDAR (Light Detection and Ranging) to improve the accuracy of UAV derived data. The results provide high-resolution orthomosaic, DEMs and 3D textured models that aim for the documentation of ancient mining scenarios, providing high-resolution digital information that improves the identification, description and interpretation of mining elements such as the hydraulic infrastructure, the presence of open-cast mines which exemplifies the different exploitation methods, and settlements. However, beyond the scientific and technical information provided by the data, the 3D documentation of ancient mining scenarios is a powerful tool for an effective and wider public diffusion ensuring the visualization, preservation and awareness over the importance and conservation of world mining heritage sites.been also established as a standard of value and currency since the world's first coinage in Lydia (643-630 BC) [5]. However, significant advances in ore deposits prospection and exploitation did not occur until the onset of the New Age. The systematic exploitation of gold ore deposits may have started during the period of Roman domination in the Mediterranean. According to recent archaeological findings in the mining site of Pino del Oro (Zamora), Sánchez-Palencia et al. [6] suggest that the earliest prospection works in northwest Spain started during pre-roman times. The northwest Iberian Peninsula represents the largest Roman gold mining prospect in the world, with the Las Médulas world-class site as one of the most remarkable gold mines due to its important landscape transformation [7][8][9]. In this area, more than 93.5 billion m 3 of Cenozoic sediments were removed by the Romans, recovering upon 5 t of gold [10]. Due to its archaeological and natural values, this site was declared a UNESCO World Heritage Centre in 1997, although recent works based on Airborne Laser Scanning Technology (ALS) suggests that it may not be the largest Roman goldmining site in terms of recovered gold quantities [11,12].Roman gold mining works in northwest Spain were active from the 1st until the 3rd centuries AC. After that period, little gold mining-related information is known, with only minor documented exploitations during the Middle A...

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Development of a methodological approach for the accurate measurement of slope changes due to landslides, using digital photogrammetry

Cited by 29 publications

References 31 publications

Analysis of Landslide Evolution Affecting Olive Groves Using UAV and Photogrammetric Techniques

Analysis of Landslide Evolution Affecting Olive Groves Using UAV and Photogrammetric Techniques

Assessment of the Evolution of a Landslide Using Digital Photogrammetry and LiDAR Techniques in the Alpujarras Region (Granada, Southeastern Spain)

New Perspectives for UAV-Based Modelling the Roman Gold Mining Infrastructure in NW Spain

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