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Aerial image mosaicking with aid of vector roads / D. Wang in Photogrammetric Engineering & Remote Sensing, PERS, vol 78 n° 11 (November 2012)
[article]
Titre : Aerial image mosaicking with aid of vector roads Type de document : Article/Communication Auteurs : D. Wang, Auteur ; Y. Wan, Auteur ; J. Xiao, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 1141 - 1150 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] appariement de réseaux
[Termes IGN] chemin le moins coûteux, algorithme du
[Termes IGN] données vectorielles
[Termes IGN] image aérienne
[Termes IGN] mosaïquage d'images
[Termes IGN] réseau routier
[Termes IGN] squelettisationRésumé : (Auteur) This paper proposes a novel approach for using vector roads to aid in the generation of seamline networks for aerial image mosaicking. A representative seamline is extracted as follows. First, the straight skeleton of the overlapping area of adjacent images is extracted. Second, vector roads in the overlapping regions are overlaid with the extracted skeleton to build a weighted graph G (V, E). Dijkstra's algorithm is applied to find the lowest-cost path that connects two intersections of the polygons of two adjacent images. The lowest-cost path is considered as a seamline candidate. Finally, the seamline candidate is refined by considering its surrounding pixels. The refined seamline is employed as the final seamline. The resultant seamlines commonly follow the centerlines of roads as much as possible, and the mosaic image appears more seamless. Moreover, the vector-based approach is typically more efficient than the existing raster-based approaches: the vector-based approach is nearly ten times faster than a raster-based representative. Numéro de notice : A2012-582 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.78.11.1141 En ligne : https://doi.org/10.14358/PERS.78.11.1141 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32028
in Photogrammetric Engineering & Remote Sensing, PERS > vol 78 n° 11 (November 2012) . - pp 1141 - 1150[article]MapCache : une solution de tuilage WMS open source / Anonyme in Géomatique expert, n° 84 (01/01/2012)
[article]
Titre : MapCache : une solution de tuilage WMS open source Type de document : Article/Communication Auteurs : Anonyme, Auteur Année de publication : 2012 Article en page(s) : pp 42 - 45 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] couche thématique
[Termes IGN] dalle
[Termes IGN] données localisées numériques
[Termes IGN] données maillées
[Termes IGN] logiciel de visualisation
[Termes IGN] logiciel libre
[Termes IGN] visualisation de données
[Termes IGN] Web Map ServiceRésumé : (Auteur) Servir des données géographiques, particulièrement raster, constitue une charge extrêmement lourde pour un serveur, si celui-ci ne dispose pas d'outils spéciaux. Parmi ceux-ci, le serveur de tuiles est sans doute le plus utile. MapCache, anciennement mod-geocache, est un serveur open source récent et performant, destiné à travailler de concert avec MapServer. Présentation du logiciel par son concepteur, Thomas Bonfort. Numéro de notice : A2012-024 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31472
in Géomatique expert > n° 84 (01/01/2012) . - pp 42 - 45[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 265-2012011 RAB Revue Centre de documentation En réserve L003 Disponible IFN-001-P001138 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt Modeling and Simulation in Engineering, ch. 1. Image-laser fusion for in situ 3D modeling of complex environments: A 4D panoramic-driven approach / Daniela Craciun (2012)
Titre de série : Modeling and Simulation in Engineering, ch. 1 Titre : Image-laser fusion for in situ 3D modeling of complex environments: A 4D panoramic-driven approach Type de document : Chapitre/Contribution Auteurs : Daniela Craciun , Auteur ; Nicolas Paparoditis , Auteur ; Francis Schmitt, Auteur Editeur : London [UK] : IntechOpen Année de publication : 2012 Importance : pp 3 - 28 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] alignement des données
[Termes IGN] chaîne de traitement
[Termes IGN] données 4D
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] estimation de pose
[Termes IGN] grotte
[Termes IGN] image panoramique
[Termes IGN] modèle 3D du site
[Termes IGN] mosaïquage d'images
[Termes IGN] rendu réaliste
[Termes IGN] site archéologique
[Termes IGN] texturageRésumé : (auteur) [introduction] One might wonder what can be gained from the image-laser fusion and in which measure such a hybrid system can generate automatically complete and photorealist 3D models of difficult to access and unstructured underground environments. Our research work is focused on developing a vision-based system aimed at automatically generating in-situ photorealist 3D models in previously unknown and unstructured underground environments from image and laser data. In particular, we are interested in modeling underground prehistoric caves. In such environments, special attention must be given to the main issue standing behind the automation of the 3D modeling pipeline which is represented by the capacity to match reliably image and laser data in GPS-denied and feature-less areas. In addition, time and in-situ access constraints require fast and automatic procedures for in-situ data acquisition, processing and interpretation in order to allow forin-situ verification of the 3D scene model completeness. Finally, the currently generated 3D model represents the only available information providing situational awareness based on which autonomous behavior must be built in order to enable the system to act intelligently on-the-fly and explore the environment to ensure the 3D scene model completeness. This chapter evaluates the potential of a hybrid image-laser system for generating in-situ complete and photorealist 3D models of challenging environments, while minimizing human operator intervention. The presented research focuses on two main aspects: (i) the automation of the 3D modeling pipeline, targeting the automatic data matching in feature-less and GPS-denied areas for in-situ world modeling and (ii) the exploitation of the generated 3Dmodels along with visual servoing procedures to ensure automatically the 3D scene model completeness. We start this chapter by motivating the jointly use of laser and image data and by listing the main key issues which need to be addressed when aiming to supply automatic photorealist3D modeling tasks while coping with time and in-situ access constraints. The next four sections are dedicated to a gradual description of the 3D modeling system in which we project the proposed image-laser solutions designed to be embedded onboard mobile plateforms, providing them with world modeling capabilities and thus visual perception. This is an important aspect for the in-situ modeling process, allowing the system to be aware and to act intelligently on-the-fly in order to explore and digitize the entire site. For this reason, we introduce it as ARTVISYS, the acronym for ARTificial VIsion-based SYStems. Numéro de notice : H2012-003 Affiliation des auteurs : MATIS+Ext (1993-2011) Autre URL associée : autre adresse Thématique : IMAGERIE/INFORMATIQUE Nature : Chapître / contribution nature-HAL : ChOuvrScient DOI : 10.5772/30269 Date de publication en ligne : 07/03/2012 En ligne : https://doi.org/10.5772/30269 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97390 Clustering of detected changes in high-resolution satellite imagery using a stabilized competitive agglomeration algorithm / O. Sjahputera in IEEE Transactions on geoscience and remote sensing, vol 49 n° 12 Tome 1 (December 2011)
[article]
Titre : Clustering of detected changes in high-resolution satellite imagery using a stabilized competitive agglomeration algorithm Type de document : Article/Communication Auteurs : O. Sjahputera, Auteur ; G. Scott, Auteur ; B. Claywell, Auteur ; et al., Auteur Année de publication : 2011 Article en page(s) : pp 4687 - 4703 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] analyse de groupement
[Termes IGN] chevauchement
[Termes IGN] classification floue
[Termes IGN] dalle
[Termes IGN] détection de changement
[Termes IGN] image à haute résolution
[Termes IGN] mosaïque d'imagesRésumé : (Auteur) The Geospatial Change Detection and exploitation (GeoCDX) is a fully automated system for detection and exploitation of change between multitemporal high-resolution satellite and airborne images. Overlapping multitemporal images are first organized into 256 m x 256 m tiles in a global grid reference system. The system quantifies the overall amount of change in a given tile with a tile change score as an aggregation of pixel-level changes. The tiles are initially ranked by these change scores for retrieval, review, and exploitation in a Web-based application. However, the ranking does not account for the wide variety of change types that are typically observed in the top-ranked change tiles. To automatically organize the wide variety of change patterns observed in multitemporal high-resolution imagery, we perform tile clustering using the competitive agglomeration (CA) algorithm stabilized using the fuzzy c-means (FCM) algorithm. Each resulting cluster contains tiles with a visually similar type of change. By visual inspection of these tile clusters, GeoCDX users can quickly find certain types of change without having to sift through a large number of tiles initially organized solely by their tile change score, thereby reducing the time it takes for users to discover and exploit the change pattern(s) of greatest interest to a given application (e.g., urban growth, disaster assessment, facility monitoring, etc.). The tile clusters also provide a high-level overview of the various types of change that occur between the two observations. This overview is compared with a similar yet more limited view offered by a relevance feedback tool that requires a user to select sample tiles for use as samples in the reranking process. Numéro de notice : A2011-477 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2011.2152847 Date de publication en ligne : 22/12/2011 En ligne : https://doi.org/10.1109/TGRS.2011.2152847 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31371
in IEEE Transactions on geoscience and remote sensing > vol 49 n° 12 Tome 1 (December 2011) . - pp 4687 - 4703[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2011121A RAB Revue Centre de documentation En réserve L003 Disponible Radar backscatter mapping using TerraSAR-X / P. Rizzoli in IEEE Transactions on geoscience and remote sensing, vol 49 n° 10 Tome 1 (October 2011)
[article]
Titre : Radar backscatter mapping using TerraSAR-X Type de document : Article/Communication Auteurs : P. Rizzoli, Auteur ; B. Braütigam, Auteur ; S. Wollstadt, Auteur ; J. Mittermayer, Auteur Année de publication : 2011 Article en page(s) : pp 3538 - 3547 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] bande X
[Termes IGN] image radar
[Termes IGN] image TanDEM-X
[Termes IGN] image TerraSAR-X
[Termes IGN] mosaïquage d'images
[Termes IGN] rétrodiffusionRésumé : (Auteur) Global backscatter data can be used for accurate synthetic aperture radar (SAR) performance estimation and optimizing instrument settings for SAR systems, e.g. the TerraSAR-X mission (TSM) and the TanDEM-X mission (TDM). The goal of this work is the generation of X-band backscatter maps by mosaicking images acquired by the TSM. An algorithm that allows the estimation of the on-ground backscatter, for any required polarization and incidence angle from the available data, is implemented. In this paper, the backscatter map generation algorithm is presented, together with the first results, obtained from the TSX-1 data. The validity of the interpolation models is also discussed, as they will form the basis for a future global statistical analysis and modeling of backscatter behavior in X-band SAR data. Numéro de notice : A2011-425 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2011.2161874 Date de publication en ligne : 08/09/2011 En ligne : https://doi.org/ 10.1109/TGRS.2011.2161874 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31204
in IEEE Transactions on geoscience and remote sensing > vol 49 n° 10 Tome 1 (October 2011) . - pp 3538 - 3547[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-201110A1 RAB Revue Centre de documentation En réserve L003 Disponible Making photogrammetry efficient: SimActive's Correlator3D software / P. Simard in Geoinformatics, vol 13 n° 7 (01/10/2010)PermalinkRadarsat-2 data: automated high accuracy geometric correction and mosaicking without ground control points / Penggen Cheng in Geoinformatics, vol 13 n° 5 (01/07/2010)PermalinkAn automatic mosaicking method for building facade texture mapping using a monocular close-range image sequence / Z. Kang in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 3 (May - June 2010)PermalinkAnalyse et développement d’outils permettant de quantifier les problèmes de continuité au niveau des raccords dans une mosaïque d’ortho-images / M. Jaussaud (2010)PermalinkPermalinkSeam-line determination for image mosaicking: a technique minimizing the maximum local mismatch and the global cost / J. Chon in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 1 (January - February 2010)PermalinkLand use monitoring by remote sensing in tropical forest areas in support of the Kyoto Protocol: the case of French Guiana / Nicolas Stach in International Journal of Remote Sensing IJRS, vol 30 n° 19 (October 2009)PermalinkAutomated high-speed high-accuracy orthorectification and mosaicking: using Rapideye data without ground control / Penggen Cheng in Geoinformatics, vol 12 n° 7 (01/10/2009)PermalinkAutomatic gigapixel mosaïcing in large scale unstructured underground environments / Daniela Craciun (2009)PermalinkDigital photogrammetry / W. Linder (2009)Permalink