Use of Vertical Aerial Images for Semi-Oblique Mapping

Poli, Daniela; Moe, Kristen S.; Legat, Klaus; Toschi, I.; Lago, F.A.; Remondino, Fabio

doi:10.5194/isprs-archives-xlii-1-w1-493-2017

Cited by 3 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In cases where it is required to intervene in areas that present problems of security and access, the possibility to define a correct correspondence between rapidity of surveying, accuracy of acquired data and surveying and processing techniques available is a key task. For what concerns the surveying methods, the use of remote-sensing data, such as LiDAR data, GNSS techniques and aerial images, offer a significant approach to BDA after the occurrence of natural or man-made hazard: in this regard, Guida et al (2018), Vetrivel et al (2018), Poli et al (2017) and Quest et al (2016) have offered interesting recent examples of application.…”

Section: Geomatics Applied To Disaster Managementmentioning

confidence: 99%

Assessment of Earthquake-Induced Damage Level on Buildings: Analysis of Two Different Survey Methods for a Case Study

Croce

Crepaldi

Piemonte

2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

View full text Add to dashboard Cite

Commission II, WG II/8 ABSTRACT:Purpose of this paper is to compare different methods for the assessment of earthquake-induced damage on buildings based on survey data, referring to the case study of Castelluccio di Norcia. The seismic events that occurred in Central Italy in 2016 threatened the future of many villages located along the Apennine ridge straddling the Regions of Umbria, Marche, Abruzzo and Lazio: in Castelluccio di Norcia, a minor historical center in the Municipality of Norcia (Umbria), the earthquake occurred on August the 24 th caused some damage on localized buildings, but the strongest seismic event -the one occurred on October the 30 th and with magnitude Mw 6.5, provoked numerous collapses and widespread failure on several buildings of the village, razing to the ground almost the 60% of the built heritage. After the two earthquakes respectively, the Fire Brigade organized a reconnaissance campaign and flew over the village via UAVs (Unmanned Aerial Vehicles). By acquiring the videos recorded in this framework, that are currently available on the net and originally not recorded for specific survey purposes, the authors produced 3D models of the village allowing to compare the configuration of Castelluccio in the phases pre-and post-the destructive event of 30 th October: in fact, since the level of damage after the earthquake of August the 24 th was very low, the model resulting from the video recorded after this earthquake could be used as a model showing the layout of the village before the main struck of October. The result of this study is the Damage Degree Evaluation (DDE) and the following definition of a map showing for each building its class of damage, according to the distinction provided by European Macro-seismic Scale EMS98. On the other hand, another damage level map was studied: the Civil Protection requested, immediately after the earthquake and for the management of disaster response activities, the activation of the COPERNICUS project, providing for the detection of most damaged buildings of the village for an early census of the non-safe areas. The map of the damage level produced within this project is of course more accurate and precise, since it was collected through different acquisition systems: UAV, close-range photogrammetry, LiDAR (Light Detection And Ranging) and SLAM (Simultaneous Location and Mapping)-based mapping. This paper proposes a comparison between the two different DDEs, in order to define whether the first method, even if based on data downloaded via the web and therefore at lower resolution, and even if acquired with a more rapid evaluation procedure not providing for ground-based surveys, can lead to the construction of damage level maps that are plausible and realistic. The question is if the first method of DDE, even if less accurate, can allow to obtain results that are satisfactory and useful in the process of management and monitoring of natural hazards, providing support for the several implied institutions, in terms of information on catastrophe...

show abstract

Section: Geomatics Applied To Disaster Managementmentioning

confidence: 99%

Assessment of Earthquake-Induced Damage Level on Buildings: Analysis of Two Different Survey Methods for a Case Study

Croce

Crepaldi

Piemonte

2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

View full text Add to dashboard Cite

show abstract

“…Three-dimensional models and 3D visualization are communication tools more effective than 2D maps in disaster management [34]. Three-dimensional modelling has been applied in a variety of studies but is restricted to visualization purposes only [35][36][37][38][39]. Regarding the generation of CityGML building models in disaster management, there are few approaches.…”

Section: Introductionmentioning

confidence: 99%

Seismic Damage Semantics on Post-Earthquake LOD3 Building Models Generated by UAS

Chaidas

Tataris

Soulakellis

2021

IJGI

View full text Add to dashboard Cite

In a post-earthquake scenario, the semantic enrichment of 3D building models with seismic damage is crucial from the perspective of disaster management. This paper aims to present the methodology and the results for the Level of Detail 3 (LOD3) building modelling (after an earthquake) with the enrichment of the semantics of the seismic damage based on the European Macroseismic Scale (EMS-98). The study area is the Vrisa traditional settlement on the island of Lesvos, Greece, which was affected by a devastating earthquake of Mw = 6.3 on 12 June 2017. The applied methodology consists of the following steps: (a) unmanned aircraft systems (UAS) nadir and oblique images are acquired and photogrammetrically processed for 3D point cloud generation, (b) 3D building models are created based on 3D point clouds and (c) 3D building models are transformed into a LOD3 City Geography Markup Language (CityGML) standard with enriched semantics of the related seismic damage of every part of the building (walls, roof, etc.). The results show that in following this methodology, CityGML LOD3 models can be generated and enriched with buildings’ seismic damage. These models can assist in the decision-making process during the recovery phase of a settlement as well as be the basis for its monitoring over time. Finally, these models can contribute to the estimation of the reconstruction cost of the buildings.

show abstract

Development of Technology for Remote Location of Unknown Underground Cavities and Deep-Seated Rockslides by Unmanned Air Systems (UAS)

Shopov

Ognianov

Filipov

et al. 2019

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

This work aims to create new scientific knowledge by developing new innovative technology for remote detection of unknown underground cavities and deep-seated rockslides. To achieve the goal, we intend to develop new innovative technology for remote localization of unknown underground cavities and deep-seated rockslides using a thermal camera mounted on a unmanned aerial vehicle (UAV). Technology is a defined sequence of operations and procedures under optimal conditions, varying within certain allowable limits, resulting in obtaining a particular result or product that meets certain requirements. Therefore, the development of new technology involves determining the allowable limits of deviation of the optimal conditions of operations and procedures for producing a good result that meets the established requirements. The development of new technology also involves determining the limits of its applicability under different external conditions. This paper includes determination of the allowable limits and the limits of applicability of the new technology being developed. Until now, no technology has been developed for remote detection of unknown underground cavities or deep-seated rockslides. The goal of this work is the development of such innovative technology with numerous applications in construction, environmental studies and protection, security, defence and infrastructure.

show abstract

Use of Vertical Aerial Images for Semi-Oblique Mapping

Cited by 3 publications

References 4 publications

Assessment of Earthquake-Induced Damage Level on Buildings: Analysis of Two Different Survey Methods for a Case Study

Assessment of Earthquake-Induced Damage Level on Buildings: Analysis of Two Different Survey Methods for a Case Study

Seismic Damage Semantics on Post-Earthquake LOD3 Building Models Generated by UAS

Development of Technology for Remote Location of Unknown Underground Cavities and Deep-Seated Rockslides by Unmanned Air Systems (UAS)

Contact Info

Product

Resources

About