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Landslide morphology analysis model based on LiDAR and topographic dataset comparison / Sagi Dalyot in SaLIS Surveying and land information science, vol 68 n° 3 (September 2008)
[article]
Titre : Landslide morphology analysis model based on LiDAR and topographic dataset comparison Type de document : Article/Communication Auteurs : Sagi Dalyot, Auteur ; E. Keinan, Auteur ; Y. Doytsher, Auteur Année de publication : 2008 Article en page(s) : pp 155 - 170 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] analyse comparative
[Termes IGN] croissance urbaine
[Termes IGN] données lidar
[Termes IGN] données localisées numériques
[Termes IGN] effondrement de terrain
[Termes IGN] géomorphologie locale
[Termes IGN] modèle numérique de surface
[Termes IGN] surveillance géologique
[Termes IGN] zone urbaine denseRésumé : (Auteur) The natural trend of megacities is to expand from their centers to outlying areas in order to accommodate rapid population growth. Urban areas situated near steep, mountainous terrain or water sources may suffer from landslides, which are one of the most common natural disasters. This paper outlines a new approach in which airborne laser altimetry is used to automatically identify and model landslide occurrences within the acquired data. Dense and accurate light detection and ranging (LiDAR) topographic observations are modeled and compared to an existing digital elevation model (DEM) of the area acquired at an earlier stage. The standard direct superimposition comparison mechanism, which ignores the datasets' inherent interrelations, usually results in an incorrect modeling outcome. A new modeling concept is proposed that initially monitors the inherent global incongruities by georeferencing the two datasets. These incongruities are then utilized in a novel geospatial matching procedure that makes it possible to achieve a precise and correct local modeling mechanism. The hierarchical comparison concept presented accurate results in automatic identification of landslide phenomena, making it possible to precisely assess their morphology. Copyright SaLIS Numéro de notice : A2008-412 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83666
in SaLIS Surveying and land information science > vol 68 n° 3 (September 2008) . - pp 155 - 170[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 121-08031 RAB Revue Centre de documentation En réserve L003 Disponible Shaping polyhedral buildings by the fusion of vector maps and lidar point clouds / L.C. Chen in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 9 (September 2008)
[article]
Titre : Shaping polyhedral buildings by the fusion of vector maps and lidar point clouds Type de document : Article/Communication Auteurs : L.C. Chen, Auteur ; T.A. Teo, Auteur ; C.Y. Kuo, Auteur ; J.Y. Rau, Auteur Année de publication : 2008 Article en page(s) : pp 1147 - 1157 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] conflation
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] données vectorielles
[Termes IGN] fusion de données
[Termes IGN] grande échelle
[Termes IGN] lasergrammétrie
[Termes IGN] polyèdre
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] semis de points
[Termes IGN] Triangulated Irregular NetworkRésumé : (Auteur) We integrate lidar point clouds and large-scale vector maps to perform building modeling. The proposed scheme comprises three major steps: (a) the preprocessing of lidar point clouds and vector maps, (b) roof analysis, and (c) building reconstruction. During the preprocessing stage, the building polygons are first obtained from the polylines, followed by the selections of lidar points in the building polygons. An irregular triangulated network is then built to represent the facets. The segmentation of planar facets for roof analysis is implemented by examining the patch size and the facet orientation. The interior 3D roof edges are then determined from the intersection of the roof planes. Finally, the building models are reconstructed through regularization. Two sample sites are tested for the purposes of validation. The experimental results indicate that the proposed scheme allows for high fidelity and accuracy, provided that the point cloud density is enough. Copyright ASPRS Numéro de notice : A2008-348 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.74.9.1147 En ligne : https://doi.org/10.14358/PERS.74.9.1147 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29341
in Photogrammetric Engineering & Remote Sensing, PERS > vol 74 n° 9 (September 2008) . - pp 1147 - 1157[article]Terrestrial laser scan survey and 3D TIN model construction of urban buildings in a geospatial database / T. Tang in Geocarto international, vol 23 n° 4 (August - September 2008)
[article]
Titre : Terrestrial laser scan survey and 3D TIN model construction of urban buildings in a geospatial database Type de document : Article/Communication Auteurs : T. Tang, Auteur ; W. Zhao, Auteur Année de publication : 2008 Article en page(s) : pp 259 - 272 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] base de données localisées
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] lasergrammétrie
[Termes IGN] modélisation 3D
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] texturage
[Termes IGN] Triangulated Irregular NetworkRésumé : (Auteur) A new method applying close range laser scan (Lidar) survey in capturing 3D objects was presented in this study. One linear laser source Lidar was used for the survey of the objects. This approach is particularly essential for 3D modelling of urban buildings in a geospatial database. Data calibration and merging were conducted for combing point cluster datasets surveyed from different locations and angles of one object in order to generate a 3D data model for the entire object. The point cluster data were transformed and converted into a triangulated irregular network (TIN) mesh model in a 3D geospatial database. The TIN mesh model was compressed and simplified by applying a computing script of surface variability priority parameters. The digital surface images and textures of the building object were draped onto the 3D TIN model according to their coordinate locations. This research provides a direct and fast means of capturing 3D objects on the Earth's surface in a geospatial database. Copyright Taylor & Francis Numéro de notice : A2008-300 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040801915917 Date de publication en ligne : 17/07/2008 En ligne : https://doi.org/10.1080/10106040801915917 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29293
in Geocarto international > vol 23 n° 4 (August - September 2008) . - pp 259 - 272[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 059-08041 RAB Revue Centre de documentation En réserve L003 Disponible Accuracy assessment of Lidar-derived digital elevation models / F. Aguilar in Photogrammetric record, vol 23 n° 122 (June - August 2008)
[article]
Titre : Accuracy assessment of Lidar-derived digital elevation models Type de document : Article/Communication Auteurs : F. Aguilar, Auteur ; Jon P. Mills, Auteur Année de publication : 2008 Article en page(s) : pp 148 - 169 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] analyse comparative
[Termes IGN] données lidar
[Termes IGN] erreur de mesure
[Termes IGN] lasergrammétrie
[Termes IGN] méthode de Monte-Carlo
[Termes IGN] modèle numérique de surface
[Termes IGN] positionnement cinématique
[Termes IGN] positionnement par GPS
[Termes IGN] précision des mesuresRésumé : (Auteur) Despite the relatively high cost of airborne lidar-derived digital elevation models (DEMs), such products are usually presented without a satisfactory associated estimate of accuracy. For the most part, DEM accuracy estimates are typically provided by comparing lidar heights against a finite sample of check point coordinates from an independent source of higher accuracy, supposing a normal distribution of the derived height differences or errors. This paper proposes a new methodology to assess the vertical accuracy of lidar DEMs using confidence intervals constructed from a finite sample of errors computed at check points. A non-parametric approach has been tested where no particular error distribution is assumed, making the proposed methodology especially applicable to non-normal error distributions of the type usually found in DEMs derived from lidar. The performance of the proposed model was experimentally validated using Monte Carlo simulation on 18 vertical error data-sets. Fifteen of these data-sets were computed from original lidar data provided by the International Society for Photogrammetry and Remote Sensing Working Group III/3, using their respective filtered reference data as ground truth. The three remaining data-sets were provided by the Natural Environment Research Council's Airborne Research and Survey Facility lidar system, together with check points acquired using high precision kinematic GPS. The results proved promising, the proposed models reproducing the statistical behaviour of vertical errors of lidar using a favourable number of check points, even in the cases of data-sets with non-normally distributed residuals. This research can therefore be considered as a potentially important step towards improving the quality control of lidar-derived DEMs. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-295 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00476.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00476.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29288
in Photogrammetric record > vol 23 n° 122 (June - August 2008) . - pp 148 - 169[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-08021 RAB Revue Centre de documentation En réserve L003 Disponible From 2D to 3D land parcelation: fusion of LiDAR data and cadastral maps / S. Filin in SaLIS Surveying and land information science, vol 68 n° 2 (June 2008)
[article]
Titre : From 2D to 3D land parcelation: fusion of LiDAR data and cadastral maps Type de document : Article/Communication Auteurs : S. Filin, Auteur ; A. Borka, Auteur ; Y. Doytsher, Auteur Année de publication : 2008 Article en page(s) : pp 81 - 91 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] cadastre numérique
[Termes IGN] conflation
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] milieu urbain
[Termes IGN] modèle numérique de surface
[Termes IGN] parcelle cadastrale
[Termes IGN] utilisation du solRésumé : Auteur) Growing demand for efficient land use above and below the ground motivates the transition of cadastre and land-management systems from traditional two-dimensional systems to three-dimensional ones. This transition is required especially in sprawling urban areas that are turning into megacities. A major concern in realizing the 3D cadastre vision is the development of efficient methods for attaching the third dimension to the existing 2D systems. In this regard, airborne laser technology that offers direct acquisition of dense and accurate 3D data appears to be the optimal means for this objective. Integration of surface data into objects and shapes, however, requires handling discrepancies between both datasets, which in turn can lead to incorrect assignment of height information. We present herein a methodology for fusing airborne laser-scanning-derived data into existing 2D cadastral systems. We demonstrate this integration in urban environments comprising high-rise buildings and open areas. Analysis of the data sources shows the necessity for such transformation, while the results demonstrate the appropriateness of the proposed fusion concept. Copyright SaLIS Numéro de notice : A2008-331 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83661
in SaLIS Surveying and land information science > vol 68 n° 2 (June 2008) . - pp 81 - 91[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 121-08021 RAB Revue Centre de documentation En réserve L003 Disponible A model-based approach for reconstructing a terrain surface from airborne Lidar data / Gunho Sohn in Photogrammetric record, vol 23 n° 122 (June - August 2008)PermalinkComparison of remotely sensed water stages from LiDAR, topographic contours and SRTM / G. Schumann in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 3 (May - June 2008)PermalinkEffect of data density, scan angle, and flying height on the accuracy of building extraction using LiDAR data / Bharat Lohani in Geocarto international, vol 23 n° 2 (April - May 2008)PermalinkMapping the height and above-ground biomass of a mixed forest using lidar and stereo Ikonos images / Benoît Saint-Onge in International Journal of Remote Sensing IJRS, vol 29 n° 5 (March 2008)PermalinkSpecies identification of individual trees by combining high resolution LiDAR data with multi-spectral images / Johan Holmgren in International Journal of Remote Sensing IJRS, vol 29 n° 5 (March 2008)PermalinkParametric investigation of the performance of Lidar filters using different surface contexts / S. Seo in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 3 (March 2008)PermalinkPhotogrammetric and LIDAR data integration using the centroid of a rectangular roof as a control point / Edson Aparecido Mitishita in Photogrammetric record, vol 23 n° 121 (March - May 2008)PermalinkExtracting urban road networks from high-resolution true orthoimage and Lidar / J. Youn in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 2 (February 2008)PermalinkRaster modelling of coastal flooding from sea-level rise / B. Poulter in International journal of geographical information science IJGIS, vol 22 n° 1-2 (february 2008)PermalinkAdvances in photogrammetry, remote sensing and spatial information sciences / Z. Li (2008)Permalink