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A framework of region-based spatial relations for non-overlapping features and its application in object based image analysis / Y. Liu in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 4 (July - August 2008)
[article]
Titre : A framework of region-based spatial relations for non-overlapping features and its application in object based image analysis Type de document : Article/Communication Auteurs : Y. Liu, Auteur ; Q. Guo, Auteur ; M. Kelly, Auteur Année de publication : 2008 Article en page(s) : pp 461 - 475 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] analyse d'image numérique
[Termes IGN] classification automatique d'objets
[Termes IGN] exhaustivité des données
[Termes IGN] extraction du réseau routier
[Termes IGN] image à haute résolution
[Termes IGN] objet géographique zonal
[Termes IGN] objet mobile
[Termes IGN] prise en compte du contexte
[Termes IGN] relation topologique
[Termes IGN] segmentation d'imageRésumé : (Auteur) Object based image analysis (OBIA) is an approach increasingly used in classifying high spatial resolution remote sensing images. Object based image classifiers first segment an image into objects (or image segments), and then classify these objects based on their attributes and spatial relations. Numerous algorithms exist for the first step of the OBIA process, i.e. image segmentation. However, less research has been conducted on the object classification part of OBIA, in particular the spatial relations between objects that are commonly used to construct rules for classifying image objects and refining classification results. In this paper, we establish a context where objects are areal (not points or lines) and non-overlapping (we call this “single-valued” space), and propose a framework of binary spatial relations between segmented objects to aid in object classification. In this framework, scale-dependent “line-like objects” and “point-like objects” are identified from areal objects based on their shapes. Generally, disjoint and meet are the only two possible topological relations between two non-overlapping areal objects. However, a number of quasi- topological relations can be defined when the shapes of the objects involved are considered. Some of these relations are fuzzy and thus quantitatively defined. In addition, we define the concepts of line-like objects (e.g. roads) and point-like objects (e.g. wells), and develop the relations between two line-like objects or two point-like objects. For completeness, cardinal direction relations and distance relations are also introduced in the proposed context. Finally, we implement the framework to extract roads and moving vehicles from an aerial photo. The promising results suggest that our methods can be a valuable tool in defining rules for object based image analysis. Copyright ISPRS Numéro de notice : A2008-327 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2008.01.007 En ligne : https://doi.org/10.1016/j.isprsjprs.2008.01.007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29320
in ISPRS Journal of photogrammetry and remote sensing > vol 63 n° 4 (July - August 2008) . - pp 461 - 475[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-08041 SL Revue Centre de documentation Revues en salle Disponible Automatic building extraction from DEMs using an object approach and application to the 3D-city modeling / Florent Lafarge in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 3 (May - June 2008)
[article]
Titre : Automatic building extraction from DEMs using an object approach and application to the 3D-city modeling Type de document : Article/Communication Auteurs : Florent Lafarge, Auteur ; Xavier Descombes, Auteur ; Josiane Zerubia, Auteur ; Marc Pierrot-Deseilligny , Auteur Année de publication : 2008 Article en page(s) : pp 365 - 381 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] détection d'objet
[Termes IGN] détection du bâti
[Termes IGN] empreinte
[Termes IGN] extraction automatique
[Termes IGN] image à haute résolution
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle numérique de surface
[Termes IGN] processus ponctuel marquéRésumé : (Auteur) In this paper, we present an automatic building extraction method from Digital Elevation Models based on an object approach. First, a rough approximation of the building footprints is realized by a method based on marked point processes: the building footprints are modelled by rectangle layouts. Then, these rectangular footprints are regularized by improving the connection between the neighbouring rectangles and detecting the roof height discontinuities. The obtained building footprints are structured footprints: each element represents a specific part of an urban structure. Results are finally applied to a 3D-city modelling process. Copyright ISPRS Numéro de notice : A2008-222 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2007.09.003 Date de publication en ligne : 20/02/2008 En ligne : https://doi.org/10.1016/j.isprsjprs.2007.09.003 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29217
in ISPRS Journal of photogrammetry and remote sensing > vol 63 n° 3 (May - June 2008) . - pp 365 - 381[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-08031 SL Revue Centre de documentation Revues en salle Disponible Effects of spatial resolution ratio in image fusion / Y. Ling in International Journal of Remote Sensing IJRS, vol 29 n° 7 (April 2008)
[article]
Titre : Effects of spatial resolution ratio in image fusion Type de document : Article/Communication Auteurs : Y. Ling, Auteur ; Manfred Ehlers, Auteur ; E. Usery, Auteur ; Marguerite Madden, Auteur Année de publication : 2008 Article en page(s) : pp 2157 - 2167 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] fusion d'images
[Termes IGN] image à basse résolution
[Termes IGN] image à haute résolution
[Termes IGN] image multibande
[Termes IGN] image panchromatique
[Termes IGN] limite de résolution géométriqueRésumé : (Auteur) In image fusion, the spatial resolution ratio can be defined as the ratio between the spatial resolution of the high-resolution panchromatic image and that of the low-resolution multispectral image. This paper attempts to assess the effects of the spatial resolution ratio of the input images on the quality of the fused image. Experimental results indicate that a spatial resolution ratio of 1 : 10 or higher is desired for optimal multisensor image fusion provided the input panchromatic image is not downsampled to a coarser resolution. Due to the synthetic pixels generated from resampling, the quality of the fused image decreases as the spatial resolution ratio decreases (e.g. from 1 : 10 to 1 : 30). However, even with a spatial resolution ratio as small as 1 : 30, the quality of the fused image is still better than the original multispectral image alone for feature interpretation. In cases where the spatial resolution ratio is too small (e.g. 1 : 30), to obtain better spectral integrity of the fused image, one may downsample the input high-resolution panchromatic image to a slightly lower resolution before fusing it with the multispectral image. Copyright Taylor & Francis Numéro de notice : A2008-098 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160701408345 En ligne : https://doi.org/10.1080/01431160701408345 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29093
in International Journal of Remote Sensing IJRS > vol 29 n° 7 (April 2008) . - pp 2157 - 2167[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 080-08051 RAB Revue Centre de documentation En réserve L003 Disponible Reducing edge effects in the classification of high resolution imagery / Guiyun Zhou in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 4 (April 2008)
[article]
Titre : Reducing edge effects in the classification of high resolution imagery Type de document : Article/Communication Auteurs : Guiyun Zhou, Auteur ; Nina S.-N. Lam, Auteur Année de publication : 2008 Article en page(s) : pp 431 - 441 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] analyse texturale
[Termes IGN] contour
[Termes IGN] fenêtre (informatique)
[Termes IGN] image à haute résolution
[Termes IGN] polygone
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) Edge effects have been a problem in image classification especially when scale-based textural methods were included in the classification process. This paper proposes a new approach to reducing edge effects. The essence of the new approach is that all pixels in a moving window make use of the textural information instead of only the center pixel as in the traditional moving window method. The performance of the new approach was tested in three classification scenarios. The results show that the new approach generally produced higher accuracy with larger window size and was much less affected by the edge issues than the traditional moving window method. The new approach yields satisfactory results as long as the window size is smaller than the land-use polygons and the class boundaries are not too complex. Copyright ASPRS Numéro de notice : A2008-122 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.74.4.431 En ligne : https://doi.org/10.14358/PERS.74.4.431 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29117
in Photogrammetric Engineering & Remote Sensing, PERS > vol 74 n° 4 (April 2008) . - pp 431 - 441[article]
[n° ou bulletin]
Titre : GIS Development Type de document : Périodique Editeur : Noida : GIS development Année de publication : 2008 Importance : 66 p. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] capteur spatial
[Termes IGN] image à haute résolution
[Termes IGN] image spatiale
[Termes IGN] satellite d'observation de la TerreNuméro de notice : 166-0801 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Numéro de périodique En ligne : http://www.geospatialworld.net/magazine/viewEdition.aspx?magid=211 Format de la ressource électronique : URL sommaire Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=18236 [n° ou bulletin]ContientRéservation
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Code-barres Cote Support Localisation Section Disponibilité 166-08011 RAB Revue Centre de documentation En réserve L003 Disponible Sentinel-2, the optical high-resolution mission for GMES operational services / P. Martimort in ESA bulletin, n° 131 (August 2007)PermalinkPermalinkÉvaluation comparative des images Ikonos pour la cartographie de l'occupation du sol à différentes échelles : cas d'étude au Liban / C. Abdallah in Photo interprétation, vol 43 n° 2 (Juin 2007)PermalinkA rigorous laboratory calibration method for interior orientation of an airborne linear push-broom camera / Tianen Chen in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 4 (April 2007)Permalink2D building change detection from high resolution aerial images and correlation digital surface models / Nicolas Champion (2007)PermalinkAutomatic extraction of urban vegetation structures from high resolution imagery and digital elevation models / Corina Iovan (2007)PermalinkAutomatic man-made object extraction and 3D scene reconstruction from geomatic-images; Is there still a long way to go? / Nicolas Paparoditis (2007)PermalinkChamps de Markov sur graphes pour le traitement des images radar / Florence Tupin (2007)PermalinkSeparating the weeds from the trees / M. Norris-Rogers in GIM international, vol 21 n° 1 (January 2007)Permalinkn° 184 - Décembre 2006 - Des capteurs à l'imagerie : symposium ISPRS commission technique 1, [actes], Marne la Vallée, 3 - 6 juillet 2006. WG 1/5 Geometric modelling of optical spaceborne sensors and DEM generation (Bulletin de Revue Française de Photogrammétrie et de Télédétection) / Société française de photogrammétrie et de télédétectionPermalink