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Local terrain modification method considering physical feature constraints for vector elements / Jiangfeng She in Cartography and Geographic Information Science, Vol 47 n° 5 (September 2020)  

Public [article]  inCartography and Geographic Information Science > Vol 47 n° 5 (September 2020) . - pp 452 - 470 Titre : Local terrain modification method considering physical feature constraints for vector elements Type de document : Article/Communication Auteurs : Jiangfeng She, Auteur ; Junyan Liu, Auteur ; Junzhong Tan, Auteur ; et al., Auteur Année de publication : 2020 Article en page(s) : pp 452 - 470 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] altitude [Termes IGN] analyse vectorielle [Termes IGN] contrainte d'intégrité [Termes IGN] déformation de surface [Termes IGN] données vectorielles [Termes IGN] interpolation [Termes IGN] processeur graphique [Termes IGN] rastérisation [Termes IGN] relief [Termes IGN] superposition de données [Termes IGN] surface du sol [Termes IGN] terrain [Termes IGN] traitement parallèle [Termes IGN] zone tampon Résumé : (auteur) Many studies have been focused on rendering 2D vector elements on 3D terrain, and a series of algorithms have been proposed. Most of these algorithms struggle to provide a seamless overlay between vector elements and an irregular terrain surface. Despite their importance, the physical characteristics of vector elements are often ignored, which distorts the surface of vector elements. For example, if vector elements that represent roads and rivers are simply overlaid on terrain, the phenomena of uneven surfaces and rivers going uphill may occur because of elevation fluctuation. To correct these deficiencies, terrain should be modified according to the physical characteristics of vectors. We propose a local terrain modification method: First, the elevation of terrain covered by vector elements is recalculated according to vectors’ physical characteristics. Second, the multigrid method is used to realize a smooth transition between the modified terrain and its surrounding area. Finally, by setting different transition ranges and comparing the visualization effects, rules are given for the selection of a suitable range. After modification, the terrain conforms to vectors’ physical characteristics, and the overall relief is undamaged. The proposed method was applied to a CPU–GPU parallel heterogeneous model and demonstrated a high level of performance. Numéro de notice : A2020-489 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/MATHEMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/15230406.2020.1770128 Date de publication en ligne : 06/07/2020 En ligne : https://doi.org/10.1080/15230406.2020.1770128 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95660 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-2020051	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Minecraft® à la carte : Le nouveau service de l’IGN qui allie jeu et cartographie 3D / David Frémont in Mappemonde, n° 120 (Avril 2017)  

Public [article]  inMappemonde > n° 120 (Avril 2017) Titre : Minecraft® à la carte : Le nouveau service de l’IGN qui allie jeu et cartographie 3D Type de document : Article/Communication Auteurs : David Frémont, Auteur ; Moez Jilani , Auteur ; Emmanuel Séguin , Auteur ; François Lecordix , Auteur ; Sofiane Kriat , Auteur Année de publication : 2017 Langues : Français (fre) Descripteur : [Termes IGN] Institut géographique national (France) [Termes IGN] jeu en ligne [Termes IGN] terrain Résumé : (auteur) Contexte : Vendu à plus de 100 millions d’exemplaires, le jeu vidéo Minecraft, lancé en 2011 par la société Mojang, a conquis un large public1 jeune (10-30 ans) et a suscité un vif intérêt du monde de l’éducation et de l’enseignement dans de nombreux pays. Ce « lego virtuel du 21e siècle », permettant notamment de construire, en ligne et à plusieurs, des « mondes » ou « cartes », ne pouvait qu’éveiller l’attention des instituts cartographiques, par exemple avec des expériences chez Kort & Matrikelstyrelsen (KMS) au Danemark2 et à l’Ordnance Survey (OS) en Grande-Bretagne. Numéro de notice : A2017-882 Affiliation des auteurs : IGN (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : 10.4000/mappemonde.3192 En ligne : https://doi.org/10.4000/mappemonde.3192 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91581 [article]

Legal and technical aspects of modernization of land and buildings cadastre in selected area / Monika Siejka in Reports on geodesy and geoinformatics, vol 99 (December 2015)  

Public [article]  inReports on geodesy and geoinformatics > vol 99 (December 2015) . - pp 44 - 53 Titre : Legal and technical aspects of modernization of land and buildings cadastre in selected area Type de document : Article/Communication Auteurs : Monika Siejka, Auteur ; Marek Ślusarski, Auteur ; Monika Mika, Auteur Année de publication : 2015 Article en page(s) : pp 44 - 53 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cadastre étranger [Termes IGN] 1:2.000 [Termes IGN] base de données foncières [Termes IGN] carte photographique [Termes IGN] plan cadastral [Termes IGN] Pologne [Termes IGN] terrain Résumé : (auteur) Modernization of the land and buildings cadastre is a set of actions aimed at improving the quality of data collected there. Application in the process of modernization of the sources of information from the land surveying, gives fully satisfactory results. On the other hand the use of photogrammetric measurements is the solution more economical in terms of financial and time. However, there is a danger of obtaining the results which do not meet the standards of accuracy of the border points position. The paper presents an example of the results of the influence of the process of modernizing the land and buildings cadastre for the areas where the source material are cadastral maps in the scale 1: 2000, created on the basis of photomaps or cadastral maps in the scale 1: 2880. An assessment of the suitability of these materials in the process of modernization and their impact on the current form of the land and building cadastre as a public register was made. Numéro de notice : A2015--023 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.2478/rgg-2015-0011 En ligne : https://doi.org/10.2478/rgg-2015-0011 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80847 [article]

Combining metric aerial photography and near-infrared videography to define within-field soil sampling frameworks / G.G. Wright in Geocarto international, vol 18 n° 4 (December 2003 - February 2004)  

Public [article]  inGeocarto international > vol 18 n° 4 (December 2003 - February 2004) . - pp 13 - 20 Titre : Combining metric aerial photography and near-infrared videography to define within-field soil sampling frameworks Type de document : Article/Communication Auteurs : G.G. Wright, Auteur ; K.B. Matthews, Auteur Année de publication : 2003 Article en page(s) : pp 13 - 20 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] classification [Termes IGN] échantillonnage d'image [Termes IGN] émulsion fausse couleur [Termes IGN] ERDAS Imagine [Termes IGN] fusion de données [Termes IGN] image vidéo [Termes IGN] photo-interprétation [Termes IGN] photographie aérienne [Termes IGN] rayonnement proche infrarouge [Termes IGN] terrain Résumé : (Auteur) This paper investigates the combination of metric aerial photography and near-infrared (NIR) videography data to improve the design of field-survey sampling frameworks. Spatial data collection can contribute up to 80% of the cost of deploying a Geographic Information System (GIS) based Decision Support System (DSS). The use of remotely sensed information, field survey using differential Global Positioning System (dGPS) and geostatistical interpolation methods maximises data quality for a given rate of sampling. Medium-format colour aerial photography and NIR videography were orthorectified to the national map base and mosaiced using ERDAS Imagine. The green and red layers of the aerial photography were combined with the NIR videography to form a false-colour composite image. Two sampling strategies were tested. The first stratified sampling on a per field basis, creating four points per hectare, randomly located within each field. The second strategy used the remotely sensed information to identify within-field variability classes for each field, using red-green difference or normalised difference vegetation index (NDVI) models. These variability classes were used as a sub-stratification framework with each class sampled at the same rate of 4 per hectare. For both strategies the sample points were generated within ESRI ArcView and were located in the field using dGPS. Maps of stone content were created using geostatistical methods and validated against samples collected on a 100 metre grid. It was concluded that combining the two image sources to create a within-field stratification framework improved the precision of the results obtained from field-survey. Numéro de notice : A2003-376 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040308542285 Date de publication en ligne : 02/01/2008 En ligne : https://doi.org/10.1080/10106040308542285 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26456 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-03041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Mapping multiple variables for predicting soil loss by geostatistical methods with TM images and a slop map / G. Wang in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 8 (August 2003)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 69 n° 8 (August 2003) . - pp 889 - 898 Titre : Mapping multiple variables for predicting soil loss by geostatistical methods with TM images and a slop map Type de document : Article/Communication Auteurs : G. Wang, Auteur ; G. Gertner, Auteur ; S. Fangbe, Auteur ; A.B. Anderson, Auteur Année de publication : 2003 Article en page(s) : pp 889 - 898 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] cartographie thématique [Termes IGN] érosion [Termes IGN] estimation statistique [Termes IGN] géostatistique [Termes IGN] krigeage [Termes IGN] modélisation [Termes IGN] terrain Résumé : (Auteur) Soil erosion is widely predicted as a function of six input factors, including rainfall erosivity, soil erodibility, slope length, slope steepness, cover management, and support practice. Because of the multiple factors, their interactions, and their spatial and temporal variability, accurately mapping the factors and further soil loss is very difficult. This paper compares two geostatistical methods and a traditional stratification to map the factors and to estimate soil loss. Soil loss is estimated by integrating a sample ground data set, TM images, and a slope map. The geostatistical methods include collocated cokriging and a joint sequential cosimulation model. With both geostatistical methods, local estimates and variances at any location where the factors and soil loss are unknown can be computed. The results showed that the two geostatistical methods performed significantly better than traditional stratification in terms of overall and spatially explicit estimates. Furthermore, the cokriging led to higher accuracy of mean estimates than did the cosimulation, while the latter provided decision makers with reliable uncertainties of the local estimates as useful information to assess risk when making decisions based on the prediction maps. Numéro de notice : A2003-169 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.69.8.889 En ligne : https://doi.org/10.14358/PERS.69.8.889 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22465 [article]

Updating solutions of the rational function model using additional control information / Y. Hu in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 7 (July 2002)  

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De moins en moins d'obstacles pour les géomètres / Michel Kasser in Géomètre, vol 2001 n° 3 (mars 2001)

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Tablettes graphiques et mise à jour de la BD TOPO de l'IGN / Frédérique Williams in Géomètre, vol 2001 n° 3 (mars 2001)

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Réflexions méthodologiques sur les observations de terrain et la télédétection : (cartographie des Sandurs en baie du roi, Spitsberg nord-occidental) / D. Laffly in Photo interprétation, vol 37 n° 2 (Juillet 1999)

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La boîte de Pandore / Association des personnels retraités de l'IGN (1995)

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Vaison-la-Romaine 1993 / Michèle Person (1993)

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La petite compagnie / Association des personnels retraités de l'IGN (1992)

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Sample surveys that use imagery with varying area coverage / L. Harrington in Photogrammetric Engineering & Remote Sensing, PERS, vol 56 n° 2 (february 1990)  

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A cost-scale factor relationship for topographic mapping / S. Laroche in CISM Journal, vol 43 n° 4 (December 1989)

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Near surface soil moisture estimation from microwave measurements / L. Bruckler in Remote sensing of environment, vol 26 n° 2 (01/11/1988)  

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