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An automatic nonlinear correlation approach for processing of hyperspectral images / R.N. Ingram in International Journal of Remote Sensing IJRS, vol 25 n° 22 (November 2004)
[article]
Titre : An automatic nonlinear correlation approach for processing of hyperspectral images Type de document : Article/Communication Auteurs : R.N. Ingram, Auteur ; A.S. Lewis, Auteur ; R.L. Tutwiler, Auteur Année de publication : 2004 Article en page(s) : pp 4981 - 4998 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] corrélation automatique de points homologues
[Termes IGN] équation non linéaire
[Termes IGN] image AVIRIS
[Termes IGN] image hyperspectrale
[Termes IGN] méthode robuste
[Termes IGN] traitement parallèleRésumé : (Auteur) Hyperspectral imaging technology demands sophisticated processing techniques that offer precise characterizations of complex spectral signatures. A nonlinear correlator structure is implemented for interference mitigation and object recognition. A key asset is the correlator's applicability to both the spatial (two-dimensional) and spectral (one-dimensional) domains, thus ideal for hyperspectral processing. The process consists of a standard convolution summed with a nonlinear adaptive term. The premise is the same in each case but the mathematical implementation is different. By performing the correlation calculations in the frequency domain, the processing algorithm is efficient, robust, and well suited for implementation on a parallel processing computational architecture. The nonlinear correlator depends on two parameters and an algorithm to determine these parameters based only on the input image (two-dimensional) or spectral signature (one-dimensional) is presented. Based on the results with the selected spatial and spectral templates, a target is identified and the spatial coordinates as well as the spectral signature are input to the final fusion stage, which analyses both spectral and spatial signatures for a correct target identification. Several examples are given and insights to template (mask) selection are provided. Numéro de notice : A2004-489 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160410001680455 En ligne : https://doi.org/10.1080/01431160410001680455 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27007
in International Journal of Remote Sensing IJRS > vol 25 n° 22 (November 2004) . - pp 4981 - 4998[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04201 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Seabed mapping with Scalable Vector Graphics / M. Frosdick in GEO:connexion, vol 3 n° 10 (november - december 2004)
[article]
Titre : Seabed mapping with Scalable Vector Graphics Type de document : Article/Communication Auteurs : M. Frosdick, Auteur Année de publication : 2004 Article en page(s) : pp 45 - 47 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique
[Termes IGN] base de données localisées
[Termes IGN] carte bathymétrique
[Termes IGN] exploitation industrielle
[Termes IGN] fond marin
[Termes IGN] format SVG
[Termes IGN] internet
[Termes IGN] intranet
[Termes IGN] mise à jour
[Termes IGN] surveillance du littoral
[Termes IGN] surveillance écologique
[Termes IGN] système d'information géographique
[Termes IGN] traitement interactifRésumé : (Editeur) Matthew Frosdick reports on the development of intelligent SVG maps for an interactive publishing project. Numéro de notice : A2004-458 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26978
in GEO:connexion > vol 3 n° 10 (november - december 2004) . - pp 45 - 47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 062-04101 RAB Revue Centre de documentation En réserve L003 Disponible The contribution of the sources separation method in the decomposition of mixed pixels / Mohamed Saber Naceur in IEEE Transactions on geoscience and remote sensing, vol 42 n° 11 (November 2004)
[article]
Titre : The contribution of the sources separation method in the decomposition of mixed pixels Type de document : Article/Communication Auteurs : Mohamed Saber Naceur, Auteur ; M.A. Loghmari, Auteur ; Mohamed-Rached Boussema, Auteur Année de publication : 2004 Article en page(s) : pp 2642 - 2653 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] accentuation d'image
[Termes IGN] analyse des mélanges spectraux
[Termes IGN] analyse en composantes indépendantes
[Termes IGN] bande spectrale
[Termes IGN] classification pixellaire
[Termes IGN] décomposition d'image
[Termes IGN] fusion de données multisource
[Termes IGN] occupation du sol
[Termes IGN] signature spectrale
[Termes IGN] Tunisie
[Termes IGN] valeur radiométriqueRésumé : (Auteur) In this paper, we propose to prove the importance of the application of blind sources separation methods on remote sensing data. Indeed, satellite images are represented by radiometric values where each one is considered as a mixture of different sources. The primary goal of our research is to hand back the different sources covering the scanned zone. The main constraint to restore these sources is to take our observation images as a mixture of physically independent components. In our work, the independence between the different sources is obtained through two statistical methods. The first method is based on the reduction of the spatial source correlations, and the second one is based on the joint maximization of the fourth-order cumulants. On the opposite of the original multispectral images that are represented according to correlated axes, the source images extracted from the proposed algorithms are represented according to mutually independent axes that allow each source to represent specifically a certain type of land cover. This increases the reliability of the analysis and the interpretation of the scanned zone. The source images obtained from the application of the sources separation method give a more effective representation of the information contained on the observation images. The performance of these source images is investigated through an application for the decomposition of mixed pixels. The originality of our application comes from the determination of the mixing matrix modeling the spectral endmembers based on source filters. These filters model the sensibility of each source channel according to the different spectral bands, which give an interesting information about the spectral theme represented by the corresponding source image. This application shows that the proportions of the different land cover types existing into the pixel are better estimated through the source images than through the original multispectral images. This method could offer an interesting solution to mixed-pixel classification. Numéro de notice : A2004-463 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2004.834764 En ligne : https://doi.org/10.1109/TGRS.2004.834764 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26983
in IEEE Transactions on geoscience and remote sensing > vol 42 n° 11 (November 2004) . - pp 2642 - 2653[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-04111 RAB Revue Centre de documentation Revues en salle Disponible A feature-based approach to conflation of geospatial sources / Ashok Samal in International journal of geographical information science IJGIS, vol 18 n° 5 (august 2004)
[article]
Titre : A feature-based approach to conflation of geospatial sources Type de document : Article/Communication Auteurs : Ashok Samal, Auteur ; Sharad Seth, Auteur ; K. Cueto, Auteur Année de publication : 2004 Article en page(s) : pp 459 - 489 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Information géographique
[Termes IGN] appariement de données localisées
[Termes IGN] données multisources
[Termes IGN] fusion de données multisource
[Termes IGN] graphe
[Termes IGN] implémentation (informatique)
[Termes IGN] système d'information géographiqueRésumé : (Auteur) A Geographic Information System (GIS) populated with disparate data sources has multiple and différent representations of the same real-world object. Often, the type of information in these sources is différent, and combining them to generate one composite representation has many benefits. The first step in this conflation process is to identify the features in different sources that represent the same real-world entity. The matching process is not simple, since the identified features from different sources do not always match in their location, extent, and description. We present a new approach to matching GIS features from disparate sources. A graph theoretic approach is used to model the geographic context and to determine the matching features from multiple sources. Experiments on implementation of this approach demonstrate its viability. Numéro de notice : A2004-283 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810410001658076 En ligne : https://doi.org/10.1080/13658810410001658076 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26810
in International journal of geographical information science IJGIS > vol 18 n° 5 (august 2004) . - pp 459 - 489[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-04051 RAB Revue Centre de documentation En réserve L003 Disponible Merging a gravimetric model of the geoid with GPS-leveling data: an example in Belgium / Henri Duquenne (01/08/2004)
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Titre : Merging a gravimetric model of the geoid with GPS-leveling data: an example in Belgium Type de document : Article/Communication Auteurs : Henri Duquenne (1948-2010) , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 01/08/2004 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 129 Conférence : IAG 2004, GGSM international symposium Gravity, geoid and space missions 30/08/2004 03/09/2004 Porto Portugal Importance : 6 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géographie physique
[Termes IGN] Belgique
[Termes IGN] fusion de données
[Termes IGN] géoïde gravimétrique
[Termes IGN] géoïde local
[Termes IGN] levé gravimétriqueNuméro de notice : C2000-016 Affiliation des auteurs : non IGN Nature : Communication DOI : 10.1007/3-540-26932-0_23 En ligne : https://doi.org/10.1007/3-540-26932-0_23 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64910 Semiautomated matching for network database integration / D. Xiong in ISPRS Journal of photogrammetry and remote sensing, vol 59 n° 1-2 (August 2004 - April 2005)PermalinkAutomatic change detection by evidential fusion of change indices / Sylvie Le Hégarat-Mascle in Remote sensing of environment, vol 91 n° 3 (30/06/2004)PermalinkL'altimétrie par laser scanner aéroporté / B. Bergeon in Géomatique expert, n° 35 (01/06/2004)PermalinkBelief change and pre-orders: a brief overview / Salem Benferhat in International journal of geographical information science IJGIS, vol 18 n° 4 (june 2004)PermalinkModélisation de l'environnement par des robots mobiles et aériens / Sylvie Lacroix in Géomatique expert, n° 35 (01/06/2004)Permalinkvol 18 n° 4 - june 2004 - Special issue : Data fusion (Bulletin de International journal of geographical information science IJGIS) / Geoffrey EdwardsPermalinkUnification des bases de données géographiques : recherches au laboratoire COGIT de l'IGN / Sébastien Mustière in Géomatique expert, n° 32 (01/03/2004)PermalinkSystem integration of GIS and a rule-based expert system for urban mapping / J. Choi in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 2 (February 2004)PermalinkDatabase and expert systems applications, 15th International Conference, DEXA 2004, Zaragoza, Spain, August/September 2004 / Fernando Galindo (2004)PermalinkFormalisation of geographical database specifications / Nils Gesbert (2004)Permalink