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Terrain modeling from lidar data: Hierarchical K-means filtering and Markovian regularization / Nesrine Chehata (2008)
Titre : Terrain modeling from lidar data: Hierarchical K-means filtering and Markovian regularization Type de document : Article/Communication Auteurs : Nesrine Chehata , Auteur ; Frédéric Bretar, Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2008 Conférence : ICIP 2008, 15th IEEE International Conference on Image Processing 12/10/2008 15/10/2008 San Diego Californie - Etats-Unis Proceedings IEEE Importance : pp 1900 - 1903 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] classification par nuées dynamiques
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] modèle numérique de terrainRésumé : (auteur) Lidar 3D point cloud corresponds to the terrestrial topography, including true ground and objects belonging either to vegetated areas or to human made features. This paper deals with DTM (digital terrain model) production. First step filtering data into ground and off-ground points is based on a multi-resolution coarse-to-fine approach. The K-means algorithm is used in a hierarchical way that provides robust data filtering. The number of cluster splits is used to automatically qualify the filtering reliability. This point is rarely treated in previous works. Secondly, a regularization process over ground points generates an accurate DTM on a regular grid. The fine DTM is processed with ground points without using classical interpolation algorithms. In fact, a Markovian regularization minimizes a global energy that confronts the terrain regularity and the goodness of fit to the data. It also depends on the filtering reliability. Conclusive results are presented on vegetated and mountainous areas and provide realistic terrain models. Numéro de notice : C2008-043 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/ICIP.2008.4712151 En ligne : https://doi.org/10.1109/ICIP.2008.4712151 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103445 A test of 2D building change detection methods : comparison, evaluation and perspectives / Nicolas Champion (2008)
Titre : A test of 2D building change detection methods : comparison, evaluation and perspectives Type de document : Article/Communication Auteurs : Nicolas Champion , Auteur ; Leena Matikainen, Auteur ; Franz Rottensteiner, Auteur ; X. Liang, Auteur ; Juha Hyyppä, Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2008 Collection : International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, ISSN 1682-1750 num. 37-B4 Conférence : ISPRS 2008, 21st ISPRS world congress 03/07/2008 11/07/2008 Pékin Chine OA ISPRS Archives Importance : pp 297 - 304 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] analyse comparative
[Termes IGN] bati
[Termes IGN] détection de changement
[Termes IGN] données localisées 2D
[Termes IGN] image numérique
[Termes IGN] mesure de la qualitéRésumé : (Auteur) In the past few years, 2D topographic databases have been completed in most industrialised countries. Most efforts in National Mapping and Cadastral Agencies (NMCAs) are now devoted to the update of such databases. Because it is generally carried out manually, by visual inspection of orthophotos, the updating process is time-consuming and expensive. The development of semiautomatic systems is thus of high interest for NMCAs. The obvious lack of expertise in the domain has driven EuroSDR to set up a test comparing different change detection approaches. In this paper, we limit the scope of the project to the imagery context. After describing input data, we shortly introduce the approaches of the working groups that have already submitted results. Preliminary results are assessed and a discussion enables to bring out first conclusions and directions. Numéro de notice : C2008-027 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVII/congress/4_pdf/53.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64214 Urban and Regional Data Management, UDMS annual 2007 / Volker Coors (2008)
Titre : Urban and Regional Data Management, UDMS annual 2007 : Proceedings of the UDMS Symposium 2007, Stuttgart, Germany, 10-12 October 2007 Type de document : Actes de congrès Auteurs : Volker Coors, Éditeur scientifique ; Massimo Rumor, Éditeur scientifique ; Elfriede Fendel, Éditeur scientifique ; Siyka Zlatanova, Éditeur scientifique Editeur : Londres : Taylor & Francis Année de publication : 2008 Conférence : UDMS 2007, Urban Data Management Society Symposium 10/10/2007 12/10/2007 Stuttgart Allemagne OA ISPRS Archives Importance : 523 p. Format : 18 x 25 cm ISBN/ISSN/EAN : 978-0-415-44059-2 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] 3D symbology encoding
[Termes IGN] données localisées
[Termes IGN] données localisées 3D
[Termes IGN] système d'information géographique
[Termes IGN] urbanisme
[Termes IGN] zone urbaineIndex. décimale : CG2007 Actes de congrès en 2007 Note de contenu : 1 - Remote sensing for urban applications
2 - Participatory systems
3 - 3D as an integral part of UDM
4 - Spatial data management
5 - Environmental and urban planning
6 - Wayfinding and logisticsNuméro de notice : 21313 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Actes Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89955 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21313-01 CG2007 Livre Centre de documentation Congrès Disponible Workshop on production partnership management, Ordnance Survey, Southampton, 7-9 November 2007, England / Ray Patrucco (2008)
Titre : Workshop on production partnership management, Ordnance Survey, Southampton, 7-9 November 2007, England Type de document : Actes de congrès Auteurs : Ray Patrucco, Éditeur scientifique ; Keith J. Murray, Éditeur scientifique Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 2008 Collection : EuroSDR official publication, ISSN 0257-0505 num. 54 Conférence : EuroSDR 2007, Workshop on production partnership management 07/11/2007 09/11/2007 Southampton Royaume-Uni OA ISPRS Archives Importance : 9 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] chaîne de production
[Termes IGN] données localisées numériques
[Termes IGN] gestion de la qualité
[Termes IGN] norme ISO
[Termes IGN] organisme cartographique national
[Termes IGN] partenariat
[Termes IGN] qualité des données
[Termes IGN] service clientRésumé : (auteur) 32 delegates from 9 countries attended the workshop. Participants came from a variety of organisations. These included mapping agencies as well as private surveying companies. There was a good spread from across Europe with others attending from as far as India.
The published first draft of the PPM guide defines PPM as a "Method of customer and supplier working together to ensure the customer requirements are met by the supplier’s processes in a relationship that fosters continual improvement for mutual benefit". The workshop created discussion and debate on applicability and scope of Production Partnership Management (PPM). The workshop agreed that although parties involved in the production of GI have different perspectives they all seek mutually beneficial outcomes. It was accepted that the benefits of Production Programme Management, illustrated by Ordnance Survey and her supplier’s experiences, can facilitate these outcomes. Using the feedback and support gathered at the workshop the PPM document will be redrafted as a document suitable for consideration by TC 211 for inclusion into the body of ISO documents supporting Geographic Information.Numéro de notice : 25396 Affiliation des auteurs : non IGN Autre URL associée : http://bono.hostireland.com/~eurosdr/km_pub/no54/html/Production_Partnership_Management/proceedings.htm Thématique : GEOMATIQUE Nature : Actes DOI : sans En ligne : http://bono.hostireland.com/~eurosdr/km_pub/no54/html/Production_Partnership_Man [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=93674 Development of a simulation model to predict Lidar interception in forested environments / N.R. Goodwin in Remote sensing of environment, vol 111 n° 4 (28/12/2007)
[article]
Titre : Development of a simulation model to predict Lidar interception in forested environments Type de document : Article/Communication Auteurs : N.R. Goodwin, Auteur ; Nicholas C. Coops, Auteur ; Darius S. Culvenor, Auteur Année de publication : 2007 Article en page(s) : pp 481 - 492 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] couvert forestier
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] faisceau laser
[Termes IGN] Lidar
[Termes IGN] modèle de simulation
[Termes IGN] propagation du signal
[Termes IGN] simulation numériqueRésumé : (Auteur) Airborne scanning LiDAR systems are used to predict a range of forest attributes. However, the accuracy with which this can be achieved is highly dependent on the sensor configuration and the structural characteristics of the forest examined. As a result, there is a need to understand laser light interactions with forest canopies so that LiDAR sensor configurations can be optimised to assess particular forest types. Such optimisation will not only ensure the targeted forest attributes can be accurately and consistently quantified, but may also minimise the cost of data acquisition and indicate when a survey configuration will not deliver information needs. In this paper, we detail the development and application of a model to simulate laser interactions within forested environments. The developed model, known as the LiDAR Interception and Tree Environment (LITE) model, utilises a range of structural configurations to simulate trees with variable heights, crown dimensions and foliage clumping. We developed and validated the LITE model using field data obtained from three forested sites covering a range of structural classes. Model simulations were then compared to coincident airborne LiDAR data collected over the same sites. Results indicate that the LITE model can be used to produce comparable estimates of maximum height of trees within plots (differences Numéro de notice : A2007-520 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2007.04.001 En ligne : https://doi.org/10.1016/j.rse.2007.04.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28883
in Remote sensing of environment > vol 111 n° 4 (28/12/2007) . - pp 481 - 492[article]La France a comblé ses dix ans de retard / Michel Kasser in Géomètre, n° 2043 (décembre 2007)PermalinkGeometric accuracy assessment of QuickBird basic imagery using different operational approaches / M. Aguilar in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 12 (December 2007)PermalinkGéoportail : plate-forme de services pour la diffusion et l'utilisation / Patrick Leboeuf in Géomètre, n° 2043 (décembre 2007)PermalinkImproving river flood extent delineation from synthetic aperture radar using airborne laser altimetry / D.C. Mason in IEEE Transactions on geoscience and remote sensing, vol 45 n° 12 Tome 1 (December 2007)PermalinkLe lidar topographique à retour d'onde complète: Etat de l'art / Clément Mallet in Traitement du signal, vol 24 n° 6 (01/12/2007)PermalinkOrthogonal polynomials supported by regional growing segmentation for the extraction of terrain from lidar data / N.A. Akel in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 11 (November 2007)PermalinkOrthophoto generation from unorganized point clouds / L. Tournas in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 11 (November 2007)PermalinkRigid and non-rigid face motion tracking by aligning texture maps and stereo 3D models / Fadi Dornaika in Pattern recognition letters, vol 28 n° 15 (1 November 2007)PermalinkPermalinkAugmentation of indoor positioning systems with a barometric pressure sensor for direct altitude determination in a multi-storey building / Guenther Retscher in Cartography and Geographic Information Science, vol 34 n° 4 (October 2007)Permalink