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Laser scanning in deformation measurements / A. Berenyi in GIM international, vol 23 n° 3 (March 2009)
[article]
Titre : Laser scanning in deformation measurements Type de document : Article/Communication Auteurs : A. Berenyi, Auteur ; T. Lovas, Auteur Année de publication : 2009 Article en page(s) : pp 17 - 21 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] auscultation d'ouvrage
[Termes IGN] déformation d'édifice
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] Hongrie
[Termes IGN] pont
[Termes IGN] surveillance d'ouvrage
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) State-of-the-art geodetic and remote sensing techniques can prove their potential through particular engineering applications. Here we discuss load test measurements of bridges over the Danube. Prior to the particular bridge surveying projects, accuracy analysis was carried out in the laboratory. We describe the shortcomings and limitations of remote sensing and propose the joint application of traditional and remote sensing technologies. We also provide recommendations for further applications of laser scanning in deformation measurement of structures. Copyright Reed Business Numéro de notice : A2009-050 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29680
in GIM international > vol 23 n° 3 (March 2009) . - pp 17 - 21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-09031 RAB Revue Centre de documentation En réserve L003 Disponible Modelling the great wall of China / Z. Wang in GIM international, vol 23 n° 2 (February 2009)
[article]
Titre : Modelling the great wall of China Type de document : Article/Communication Auteurs : Z. Wang, Auteur ; Y. Liu, Auteur ; L. Cao, Auteur Année de publication : 2009 Article en page(s) : pp 35 - 37 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] Chine
[Termes IGN] données lidar
[Termes IGN] modèle numérique de terrain
[Termes IGN] monument historique
[Termes IGN] télémétrie laser aéroporté
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) The Great Wall of China is one of the largest manmade wonders of the world, comprising many different and irregular structures. We employed airborne Lidar to produce highly accurate digital elevation models (DEMs) to identify areas requiring repair. A terrestrial laser scanner mounted on a tripod was used to improve the terrain model, especially for surfaces covered with dense vegetation. The combined use of airborne and terrestrial laser scanner produced DEMs with accuracies better than 10cm. Copyright Reed Business Information Numéro de notice : A2009-012 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29642
in GIM international > vol 23 n° 2 (February 2009) . - pp 35 - 37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-09021 RAB Revue Centre de documentation En réserve L003 Disponible Extracting building footprint from 3D point clouds using terrestrial laser scanning at street level / Karim Hammoudi (2009)
contenu dans CMRT09 Object extraction for 3D city models, road databases and traffic monitoring-concepts, algorithms and evaluation / Uwe Stilla (2009)
Titre : Extracting building footprint from 3D point clouds using terrestrial laser scanning at street level Type de document : Article/Communication Auteurs : Karim Hammoudi , Auteur ; Fadi Dornaika , Auteur ; Nicolas Paparoditis , Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2009 Collection : International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, ISSN 1682-1750 num. 38-3-W4 Conférence : CMRT 2009, City Models, Roads and Traffic, Object extraction for 3D city models, road databases, traffic monitoring 03/09/2009 04/09/2009 Paris France OA ISPRS Archives Importance : pp 65 - 70 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] empreinte
[Termes IGN] extraction de traits caractéristiques
[Termes IGN] modélisation 3D
[Termes IGN] semis de points
[Termes IGN] système de numérisation mobile
[Termes IGN] télémétrie laser terrestre
[Termes IGN] zone urbaineRésumé : (Auteur) In this paper, we address the problem of generating building footprints using terrestrial laser scanning from a Mobile Mapping System (MMS). The MMS constitutes a fast and adapted tool to extract precise data for 3D city modeling. Urban environments evolve over time due to human activities and other factors. Buildings are constructed or destroyed and the urban areas are extended. Therefore, the structures of the cities are constantly modified. Currently, building footprints can be generated using aerial data. However, aerial based footprints lack precision due to the nature of the data and to the associated extraction methods. The use of MMS is proposed as an alternative to perform this complex task. In this work, we propose an operational approach for automatic extraction of accurate building footprints. We describe the challenges associated with the terrestrial laser raw data acquired in realistic and dense urban environments. After a filtering stage on the 3D laser cloud point, we extract and reconstruct the dominant facade planes by combining the Hough transform, the k-means clustering algorithm and the RANSAC method. The building footprint is then estimated from these dominant planes. Preliminary experimental results are presented and discussed. The assessments show that this approach is very promising for the automation of building footprints extraction. Numéro de notice : C2009-008 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVIII/3-W4/pub/CMRT09_65.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65048 Full-waveform topographic lidar: State-of-the-art / Frédéric Bretar in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 1 (January - February 2009)
[article]
Titre : Full-waveform topographic lidar: State-of-the-art Type de document : Article/Communication Auteurs : Frédéric Bretar, Auteur ; Clément Mallet , Auteur Année de publication : 2009 Article en page(s) : pp 1 - 16 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] carte de la végétation
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] état de l'art
[Termes IGN] lidar à retour d'onde complète
[Termes IGN] lidar topographique
[Termes IGN] milieu urbain
[Termes IGN] rétrodiffusion
[Termes IGN] semis de points
[Termes IGN] télémétrie laser aéroporté
[Termes IGN] traitement du signalRésumé : (Auteur) Airborne laser scanning (ALS) is an active remote sensing technique providing range data as 3D point clouds. This paper aims at presenting a survey of the literature related to such techniques, with emphasis on the new sensors called full-waveform lidar systems. Indeed, an emitted laser pulse interacts with complex natural and man-made objects leading to a temporal distortion of the returned energy profile. The new technology of full-waveform laser scanning systems permits one to digitize the complete waveform of each backscattered pulse. Full-waveform lidar data give more control to an end-user in the interpretation process of the physical measurement and provide additional information about the structure and the physical backscattering characteristics of the illuminated surfaces. In this paper, the theoretical principles of full-waveform airborne laser scanning are first described. Afterwards, a review of the main sensors as well as signal processing techniques are presented. We then discuss the interpretation of full-waveform measures with special interest on vegetated and urban areas. Copyright ISPRS Numéro de notice : A2009-026 Affiliation des auteurs : IGN (1940-2011) Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2008.09.007 Date de publication en ligne : 29/10/2008 En ligne : https://doi.org/10.1016/j.isprsjprs.2008.09.007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29656
in ISPRS Journal of photogrammetry and remote sensing > vol 64 n° 1 (January - February 2009) . - pp 1 - 16[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-09011 SL Revue Centre de documentation Revues en salle Disponible
Titre : GIS-based management and analysis of the geoglyphs in the Palpa region Type de document : Thèse/HDR Auteurs : Martin Sauerbier, Auteur Editeur : Zurich : Institut für Geodäsie und Photogrammetrie IGP - ETH Année de publication : 2009 Collection : IGP Mitteilungen, ISSN 0252-9335 num. 104 Importance : 173 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-906467-85-6 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse spatiale
[Termes IGN] archéologie aérienne
[Termes IGN] données localisées 3D
[Termes IGN] données vectorielles
[Termes IGN] image aérienne
[Termes IGN] image Terra-ASTER
[Termes IGN] modèle numérique de surface
[Termes IGN] orthoimage
[Termes IGN] orthophotographie
[Termes IGN] Pérou
[Termes IGN] photogrammétrie numérique
[Termes IGN] reconstruction 3D
[Termes IGN] site archéologique
[Termes IGN] système d'information géographique
[Termes IGN] télémétrie laser terrestre
[Termes IGN] visualisation 3DRésumé : (Auteur) This dissertation results from the work conducted by the author within the frame of the Nasca-Palpa project at the chair of photogrammetry and remote sensing of ETH Zurich. The work presented here reports on the work conducted at ETH Zurich during the Nasca/Palpa project with the focus on the investigation of the geoglyphs, also known as the Nosca lines, in the Palpa area. This thesis covers basically two main parts: Photogrammetric data acquisition, processing and geoglyph reconstruction for the Palpa region and the Pampa de Nasca and CIS-based management and analysis of the generated data, primarily for the geoglyphs of Palpa. The motivation behind this work was the need for suitable data management and analysis methods demanded by the involved archaeologists to enable a quantitative study of the spatial characteristics of the geoglyphs and the surrounding landscape in order to better understand the social and cultural meaning of the geoglyphs. Aside from the geoglyphs, a second class of figurative remains was investigated: The petroglyphs of Chichictara.
Complementary to the archaeological investigations of our project partners, namely the German Archaeological Institute (DAI-KAAK), Bonn, Germany), the author concentrated on methods for 3D data acquisition for archaeological purposes in large and medium scale with the focus on photogrammetric methods. Furthermore, a second important focus was laid on the design of a GIS database containing archaeological and spatial information and the development of analysis methods with respect to the spatial characteristics of the archaeological objects to be investigated, in this case the geoglyphs in the Nasca region and the petroglyphs of Chichictara in south Peru. The accomplished work resulted in a wide variety of data and derived products and analysis results which led to new insights in the historical function and meaning of the geoglyphs of Nasca. The generated data consists of Digital Terrain Models derived from aerial and satellite imagery, 3D vector data representing the geoglyphs, high resolution orthoimages and numerical results of analyses performed based on the generated spatial data.
The applied and developed methods aim to investigate the geoglyphs in a manner that should be as objective as possible, trying to answer concrete archaeological questions. Though manifold hypotheses on the geoglyphs exist, the aim was not to focus on a single one but given the data available to investigate especially those which imply a spatial character for the subset of geoglyphs of Palpa. The methods applied for data acquisition, object definition and quantitative analysis of the geoglyphs are an important achievement of this thesis and can be applied in future studies on more complete sets of geoglyph data as well as for similar studies in other areas of investigation. Analogue to the development of the GIS database for the geoglyphs, a database for petroglyph data was developed under consideration of the true 3D character of this rock art and its surrounding topography. The developed databases, tools and analysis methods described here represent a system that is suited as a basis for archaeological interpretation of the landscape decorations in the Nasca and Palpa region and provides even an enormous potential for further analyses to be accomplished in the future. At the present state, the database contains data on the geoglyphs of Palpa and of a subset of the petroglyphs at Chichictara. though the developed data structure enables an enhancement with further data on both, Nasca time geoglyphs and Paracas time petroglyphs, from other sites. Having these two valuable databases documenting the two classes of figures that engrave the landscape in such an impressive way, a wide range of possibilities of archaeological interpretation opens up for future work beyond this thesis, as well do the developed tools and methods presented here.
The author thanks the Swiss-Liechtenstein foundation for Archeological Research Abroad (SLSA), the AVINA foundation and ETH Zurich for their valuable support that enabled this thesis.Note de contenu : 1 Introduction
1.1 Research Goals
1.2 The Nasca/Palpa Project at ETH Zurich
1.3 Research Topics
1.4 Photogrammetric Mapping of Large Area CH Sites
1.5 Archaeological GIS
1.5.1 Added Value of Information Systems in Archaeology
1.5.2 Archaeological Requirements
1.5.3 Overview of Applications of GIS in Archaeology
1.5.4 Modeling the Temporal Component in GIS
1.5.5 GIS for Geoglyph Management and Analysis
1.6 Previous work related to the geoglyphs in Nasca and Palpa
1.6.1 Previous Work on Geoglyphs and Related Settlements in Nasca and Palpa
1.7 Rock Art Documentation and Data Management
2 Photogrammetric Processing
2.1 Image Data for 3D Reconstruction of the Pampa de Nasca
2.2 Photogrammetric Methods
2.3 Image Orientation
2.4 DTM Generation
2.5 Orthoimage Generation
2.6 Geoglyph Mapping
2.6.1 Stereoscopic Mapping of the Geoglyphs
2.6.2 Digital Monoplotting
2.6.3 Applicability of Satellite Imagery
2.6.4 Automation Issues on Geoglyph Mapping
2.7 A 3D Model from ASTER Images .
2.8 Image-based Modeling of the Petroglyphs of Chichictara
2.8.1 Terrestrial Laser Scanning for DTM Generation
2.8.2 Photogrammetric 3D Modeling of Petroglyph Rocks
2.8.3 Integration of the Textured 3D Models in the Laser Scan DTM
2.8.4 3D Digitization of the Petroglyphs
3 GIS-based Management of the Archaeological Data
3.1 Requirements of a GIS
3.2 Data Management
3.2.1 Requirements for a GIS for the Geoglyphs
3.2.2 Database Issues
3.2.3 GIS Software Issues '
3.3 Conceptual Data Modeling and Implementation Issues
3.3.1 A Data Model for the Geoglyphs .
3.3.2 A Metadata Model
3.4 A Petroglyph Information System
3.4.1 Requirements
3.4.2 Workflow for Petroglyph Data Management
3.4.3 Software Issues
3.4.4 Implementation of the Petroglyph Information System
4 GIS-based Analyses
4.1 Hypotheses and Verification
4.2 Queries and Statistical Analyses on Attribute Data
4.2.1 Queries Related to Object Definition
4.2.2 Queries for Data Retrieval
4.3 Spatial and Geometric Characteristics of the Geoglyphs
4.3.1 Straightness of Line-shaped Geoglyphs
4.3.2 Geoglyph Visibility
4.3.3 Interdependency of Spatial Variables
4.3.4 Analysis of the Influence of Spatial Variables
4.3.5 Orientations of the Palpa Geoglyphs
4.4 The Petroglyphs of Chichictara in their Natural Context
5 Visualization
5.1 3D Visualization of DTM and Orthomosaic
5.2 Visualization of Semantic and Spatial Analysis Results
5.2.1 Chronological Development of the Palpa Geoglyphs
5.2.2 Typological Differentiation of the Palpa Geoglyphs
5.2.3 3D Visualization of Spatial Analysis Results
6 Conclusions and Future Perspectives
6.1 Photogrammetric Processing
6.2 Trends in Archaeological GIS
6.3 Recent Developments in GIS and DBMS Software and Future Trends
6.4 Results from Geoglyph Analysis
6.5 Future Perspectives Based on the Actual State of the ProjectNuméro de notice : 15507 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Thèse étrangère En ligne : http://dx.doi.org/10.3929/ethz-a-005940066 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62740 Réservation
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