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Incremental segmentation of lidar point clouds with an octree-structured voxel space / M. Wang in Photogrammetric record, vol 26 n° 133 (March - May 2011)
[article]
Titre : Incremental segmentation of lidar point clouds with an octree-structured voxel space Type de document : Article/Communication Auteurs : M. Wang, Auteur ; Yi-Hsing Tseng, Auteur Année de publication : 2011 Article en page(s) : pp 32 - 57 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] coplanarité
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] octree
[Termes IGN] reconstruction d'objet
[Termes IGN] segmentation
[Termes IGN] semis de points
[Termes IGN] voxelRésumé : (Auteur) Lidar (light detection and ranging) data implicitly contains abundant three-dimensional spatial information. The segmentation of lidar point clouds is the key procedure for transforming implicit spatial information into explicit spatial information. Common criteria used for point cloud segmentation are proximity and coherence of point distribution. An effective segmentation algorithm may apply various steps or combinations of criteria depending on the application. This paper proposes a four-step segmentation method for lidar point clouds to deliver incremental segmentation results. Segmentation results of each step can provide the fundamental data for the next step. In the first step, the input point cloud is organised into an octree-structured voxel space, in which the point neighbourhood is established. In the second step, connected voxels which are not empty are grouped to obtain grouped points based on proximity. The third step is a coplanar point segmentation based on both coherence and proximity, which was performed on each point group obtained in the second step. Finally, neighbouring coplanar point groups are merged into “co-surface” point groups based on the criteria of plane connection and intersection. This scheme enables an incremental retrieval and analysis of a large lidar data-set. Experimental results demonstrate the effectiveness of the segmentation algorithm in handling both airborne and terrestrial lidar data. It is anticipated that the incremental segmentation results will be useful for object modelling using lidar data. Numéro de notice : A2011-077 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2011.00624.x Date de publication en ligne : 16/03/2011 En ligne : https://doi.org/10.1111/j.1477-9730.2011.00624.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30858
in Photogrammetric record > vol 26 n° 133 (March - May 2011) . - pp 32 - 57[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-2011011 RAB Revue Centre de documentation En réserve L003 Disponible Modelling and analysing 3D buildings with a primal/dual data structure / P. Boguslawski in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 2 (March - April 2011)
[article]
Titre : Modelling and analysing 3D buildings with a primal/dual data structure Type de document : Article/Communication Auteurs : P. Boguslawski, Auteur ; Christopher Gold, Auteur ; Hugo Ledoux, Auteur Année de publication : 2011 Article en page(s) : 17 p. Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] bati
[Termes IGN] carte d'intérieur
[Termes IGN] CityGML
[Termes IGN] données localisées 3D
[Termes IGN] graphe
[Termes IGN] modèle topologique de données
[Termes IGN] relation topologiqueRésumé : (Auteur) While CityGML permits us to represent 3D city models, its use for applications where spatial analysis and/or real-time modifications are required is limited since at this moment the possibility to store topological relationships between the elements is rather limited and often not exploited. We present in this paper a new topological data structure, the dual half-edge (DHE), which permits us to represent the topology of 3D buildings (including their interiors) and of the surrounding terrain. It is based on the idea of simultaneously storing a graph in 3D space and its dual graph, and to link the two. We propose Euler-type operators for incrementally constructing 3D models (for adding individual edges, faces and volumes to the model while updating the dual structure simultaneously), and we also propose navigation operators to move from a given point to all the connected planes or polyhedra for example. The DHE also permits us to store attributes to any element. We have implemented the DHE and have tested it with different CityGML models. Our technique allows us to handle important query-types, for example finding the nearest exterior exit to a given room, as in disaster management planning. As the structure is locally modifiable the model may be adapted whenever a particular pathway is no longer available. The proposed DHE structure adds significant analytic value to the increasingly popular CityGML model. Numéro de notice : A2011-554 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2010.11.003 Date de publication en ligne : 28/12/2010 En ligne : https://doi.org/10.1016/j.isprsjprs.2010.11.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31448
in ISPRS Journal of photogrammetry and remote sensing > vol 66 n° 2 (March - April 2011) . - 17 p.[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2011021 SL Revue Centre de documentation Revues en salle Disponible vol 77 n° 3 - March 2011 - Silvilaser, Lidar remote sensing for characterizing forest vegetation (Bulletin de Photogrammetric Engineering & Remote Sensing, PERS) / American society for photogrammetry and remote sensingContient
- Forestry applications for satellite lidar remote sensing / J. Rosette in Photogrammetric Engineering & Remote Sensing, PERS, vol 77 n° 3 (March 2011)
- Full waveform-based analysis for forest type information derivation from large footprint spaceborne lidar data / Junjie Zhang in Photogrammetric Engineering & Remote Sensing, PERS, vol 77 n° 3 (March 2011)
- Automated detection of branch dimensions in woody skeletons of fruit tree canopies / Alexander Bucksch in Photogrammetric Engineering & Remote Sensing, PERS, vol 77 n° 3 (March 2011)
3D City Models: Supporting Tool for Urban Planning and Design / E. Parmehr in GIM international, vol 25 n° 2 (February 2011)
[article]
Titre : 3D City Models: Supporting Tool for Urban Planning and Design Type de document : Article/Communication Auteurs : E. Parmehr, Auteur ; A. Afary, Auteur ; B. Basiri, Auteur Année de publication : 2011 Article en page(s) : 3 p. ; pp 29 - 31 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] 1:500
[Termes IGN] carte topographique
[Termes IGN] données localisées 2D
[Termes IGN] données localisées 3D
[Termes IGN] image aérienne
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] planification urbaine
[Termes IGN] TéhéranRésumé : (Auteur) Abasabad in the north of Tehran has been designated a development area to serve the millions of people living in the metropolis. In order to progress from general zoning plan to detailed designs of buildings, roads, green zones and playgrounds, accurate and detailed geo-data was required, preferably in the form of large-scale digital maps and 3D city models. The authors describe how they produced this type of 2D and 3D geo-data using high-resolution digital aerial imagery and scale 1:500 maps. Numéro de notice : A2011-039 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30820
in GIM international > vol 25 n° 2 (February 2011) . - 3 p. ; pp 29 - 31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-2011021 RAB Revue Centre de documentation Revues en salle Disponible Swedish Lidar Project: New Nationwide Elevation Model / Y. Petersen in GIM international, vol 25 n° 2 (February 2011)
[article]
Titre : Swedish Lidar Project: New Nationwide Elevation Model Type de document : Article/Communication Auteurs : Y. Petersen, Auteur ; H. Rost, Auteur Année de publication : 2011 Article en page(s) : 3 p. ; pp 20 - 23 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] modèle numérique de terrain
[Termes IGN] spécification de produit
[Termes IGN] Suède
[Termes IGN] télémétrie laser aéroportéRésumé : (Auteur) Airborne Lidar is being used to establish a new national elevation model of the entire territory of Sweden (450,000km2), one point per two m2. The project, spanning 2009 to 2013, is the responsibility of two internationally operating Scandinavian geospatial product service providers: Blom, headquartered in Oslo, Norway, and Denmark-based COWI. The authors discuss specifications, status and challenges posed by this large-scale, long-term project. Numéro de notice : A2011-037 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30818
in GIM international > vol 25 n° 2 (February 2011) . - 3 p. ; pp 20 - 23[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-2011021 RAB Revue Centre de documentation Revues en salle Disponible La charte d'éthique de la 3D : petit bilan onze mois après son lancement / Hervé Halbout in Géomatique expert, n° 78 (01/01/2011)PermalinkPermalinkConditional random fields for urban scene : Classification with full waveform LiDAR Data / Joachim Niemeyer (2011)PermalinkContributions to the 3D city modeling. 3D polyhedral building model reconstruction from aerial images & 3D facade modeling from terrestrial 3D point cloud and images / Karim Hammoudi (2011)PermalinkGrotte de Marsoulas : la renaissance en 3D / M. Mayo in Géomètre, n° 2077 (janvier 2011)PermalinkRapport d'activité 2010 [de l'Institut Géographique National] / IGN (2011)PermalinkRecalage d'un nuage de points de scanner laser terrestre avec une image de bâtiment / Abdelhamid Bennis (2011)PermalinkReprésentation de la donnée géographique en 3D sur Internet / Kaniba Pach (2011)PermalinkStochastic Geometry for Image Analysis, ch 9. Some applications to image processing: pattern recognition / shape recognition / Florent Lafarge (2011)PermalinkLes techniques de positionnement au service des paléontologues, les travaux de l'ENSG sur la Caune de l'Arago / Laure Chandelier in Revue Française de Photogrammétrie et de Télédétection, n° 193 (Janvier 2011)PermalinkPermalinkGenève en route vers la 3D / Françoise de Blomac in SIG la lettre, n° 122 (décembre 2010)PermalinkA marked point process for modeling lidar waveforms / Clément Mallet in IEEE Transactions on image processing, vol 19 n° 12 (December 2010)PermalinkQuality assessment of 3D building data / Devrim Akca in Photogrammetric record, vol 25 n° 132 (December 2010 - February 2011)PermalinkTotal variation methods for three dimensional LIDAR image denoising / F. Crosby in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 12 (December 2010)PermalinkA low-cost multi-sensoral mobile mapping system and its feasibility for tree measurements / Anttoni Jaakkola in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 6 (November - December 2010)PermalinkMulti-view scans alignment for 3D spherical mosaicing in large-scale unstructured environments / Daniela Craciun in Computer Vision and image understanding, vol 114 n° 11 (November 2010)PermalinkRadiometric calibration of small-footprint full-waveform airborne laser scanner measurements: Basic physical concepts / W. Wagner in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 6 (November - December 2010)PermalinkPoint clouds : Lidar versus 3D vision / A. Irschara in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 10 (October 2010)PermalinkReigning in 3D point clouds with the LAS format / A. Chambers in Geoinformatics, vol 13 n° 7 (01/10/2010)Permalink