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User-centric evaluation of semi-automated road network extraction / W. Harvey in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 12 (December 2004)
[article]
Titre : User-centric evaluation of semi-automated road network extraction Type de document : Article/Communication Auteurs : W. Harvey, Auteur ; J. Chris Mcglone, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 1353 - 1364 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] analyse comparative
[Termes IGN] convivialité
[Termes IGN] extraction du réseau routier
[Termes IGN] extraction manuelle
[Termes IGN] extraction semi-automatique
[Termes IGN] logiciel de traitement d'image
[Termes IGN] réseau routier
[Termes IGN] Socet SetRésumé : (Auteur) This paper describes an in-depth usability evaluation of our ROADMAP road network extraction system. Six operators used ROADMAP in both manual and semi-automated modes, as well as BAE Systems 'SOCET SET', to extract roads in four image test areas. An in-depth statistical analysis was performed on the timing results, with the main conclusion being that the performance differences among the three systems were not statistically significant. However, the evaluation highlighted a number of factors other than intrinsic feature extraction competence that affected the results and which point to the potential for significant engineering improvements. Numéro de notice : A2004-499 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.70.12.1353 En ligne : https://doi.org/10.14358/PERS.70.12.1353 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27016
in Photogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 12 (December 2004) . - pp 1353 - 1364[article]A wavelet transform based for road centerline extraction / Tianen Chen in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 12 (December 2004)
[article]
Titre : A wavelet transform based for road centerline extraction Type de document : Article/Communication Auteurs : Tianen Chen, Auteur ; Jing Wang, Auteur ; K. Zhang, Auteur Année de publication : 2004 Article en page(s) : pp 1423 - 1431 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] axe médian
[Termes IGN] données localisées 2D
[Termes IGN] extraction automatique
[Termes IGN] extraction du réseau routier
[Termes IGN] image à haute résolution
[Termes IGN] magnitude
[Termes IGN] transformation en ondelettesRésumé : (Auteur) This paper introduces a new wavelet transform based method of road centerline extraction from high resolution remote sensing images. In the one dimensional case, we characterize different kinds of sudden changes of signals by comparing f the magnitudes of the local extreme values of the wavelet transforms under different dilation scales of the same wavelet. The platform-like signals, which come from cross sections of roads, can be characterized through the evolution of the wavelet transform across scales. A two-dimensional wavelet transform of an image consists of two components, each component is a one dimensional wavelet transform in one coordinate direction followed by a smoothing process in the perpendicular direction. The road edges can be characterized through the evolution of the two-dimensional wavelet transform across different scales. Edges of the main roads can then be extracted using these characterizations, and the road centerlines can be obtained by proper post-processing. Numéro de notice : A2004-504 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.70.12.1423 En ligne : https://doi.org/10.14358/PERS.70.12.1423 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27021
in Photogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 12 (December 2004) . - pp 1423 - 1431[article]Comparison of different speckle-reduction techniques in SAR images using wavelet transform / A. Vidal-Pantaleoni in International Journal of Remote Sensing IJRS, vol 25 n° 22 (November 2004)
[article]
Titre : Comparison of different speckle-reduction techniques in SAR images using wavelet transform Type de document : Article/Communication Auteurs : A. Vidal-Pantaleoni, Auteur ; D. Marti, Auteur Année de publication : 2004 Article en page(s) : pp 4915 - 4932 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] analyse comparative
[Termes IGN] filtrage du bruit
[Termes IGN] filtre de déchatoiement
[Termes IGN] filtre de Wiener
[Termes IGN] image ERS-SAR
[Termes IGN] seuillage d'image
[Termes IGN] transformation en ondelettesRésumé : (Auteur) Speckle noise is always present in Synthetic Aperture Radar (SAR) images. Many methods that reduce speckle noise while preserving texture and detail have been presented previously. In this paper, a comparison of different methods using wavelet decomposition is performed and new improvements for traditional methods are introduced. These techniques are: Wiener filtering, classical soft threshold, a new adaptive soft threshold and Bayesian reconstruction. First, speckle noise in a SAR image was analysed statistically. Then, a simulated image following these characteristics was created in order to evaluate noise reduction. The mean squared error was classified depending on the spatial characteristics of a local region. This tool gave valuable information for algorithm assessment. In the comparison, the new adaptive soft threshold method provided excellent results concerning noise reduction and detail preservation compared with classical soft threshold and Wiener methods. In addition, it gave as much noise reduction as the most sophisticated Bayesian method, but much more efficiently. Hence, the adaptive version of soft thresholding outperformed the other techniques. This study also presents a rigorous framework for speckle noise simulation and noise reduction evaluation. Numéro de notice : A2004-487 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160410001688277 En ligne : https://doi.org/10.1080/01431160410001688277 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27005
in International Journal of Remote Sensing IJRS > vol 25 n° 22 (November 2004) . - pp 4915 - 4932[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04201 RAB Revue Centre de documentation En réserve L003 Exclu du prêt A comparison of error metrics and constraints for multiple endmember spectral analysis and spectral angle mapper / P.E. Dennison in Remote sensing of environment, vol 93 n° 3 (15/11/2004)
[article]
Titre : A comparison of error metrics and constraints for multiple endmember spectral analysis and spectral angle mapper Type de document : Article/Communication Auteurs : P.E. Dennison, Auteur ; K. Halligan, Auteur ; D.A. Roberts, Auteur Année de publication : 2004 Article en page(s) : pp 359 - 367 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] albedo
[Termes IGN] analyse comparative
[Termes IGN] analyse de mélange spectral d’extrémités multiples
[Termes IGN] appariement spectral
[Termes IGN] calcul d'erreur
[Termes IGN] classe d'objets
[Termes IGN] classification Spectral angle mapper
[Termes IGN] erreur moyenne quadratique
[Termes IGN] métriqueRésumé : (Auteur) Spectral matching algorithms can be used for the identification of unknown spectra based on a measure of similarity with one or more known spectra. Two popular spectral matching algorithms use different error metrics and constraints to determine the existence of a spectral match. Multiple endmember spectral mixture analysis (MESMA) is a linear mixing model that uses a root mean square error (RMSE) error metric. Spectral angle mapper (SAM) compares two spectra using a spectral angle error metric. This paper compares two endmember MESMA and SAM using a spectral library containing six land cover classes. RMSE and spectral angle for models within each land cover class were directly compared. The dependence of RMSE on the albedo of the modeled spectrum was also explored. RMSE and spectral angle were found to be closely related, although not equivalent, due to variations in the albedo of the modeled spectra. Error constraints applied to both models resulted in large differences in the number of spectral matches. Using MESMA, the number of spectra modeled within the error constraint increased as the albedo of the modeled spectra decreased. The value of the error constraint used was shown to make a much larger difference in the number of spectra modeled than the choice of spectral matching algorithm. Numéro de notice : A2004-440 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2004.07.013 En ligne : https://doi.org/10.1016/j.rse.2004.07.013 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26960
in Remote sensing of environment > vol 93 n° 3 (15/11/2004) . - pp 359 - 367[article]Integrating land-cover data with different ontologies: identifying change from inconsistency / A. Comber in International journal of geographical information science IJGIS, vol 18 n° 7 (november 2004)
[article]
Titre : Integrating land-cover data with different ontologies: identifying change from inconsistency Type de document : Article/Communication Auteurs : A. Comber, Auteur ; R. Wadsworth, Auteur ; Peter F. Fisher, Auteur Année de publication : 2004 Article en page(s) : pp 691 - 708 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] analyse comparative
[Termes IGN] carte d'occupation du sol
[Termes IGN] cohérence des données
[Termes IGN] détection de changement
[Termes IGN] intégration de données
[Termes IGN] jeu de données localisées
[Termes IGN] occupation du sol
[Termes IGN] ontologie
[Termes IGN] Royaume-Uni
[Termes IGN] série temporelleRésumé : (Auteur) Spatially coincident land-cover information frequently varies due to technological and political variations. This is especially problematic for timeseries analyses. We present an approach using expert expressions of how the semantics of different datasets relate to integrating temporal time series landcover information where the classification classes have fundamentally changed. We use land-cover mapping in the UK (LCMGB and LCM2000) as example data sets because of the extensive object-based meta-data in the LCM2000. Inconsistencies between the two datasets can arise from random, gross and systematic error and from an actual change in land cover. Locales of possible land-cover change are inferred by comparing characterizations derived from the semantic relations and meta-data. Field visits showed errors of omission to be 21% and errors of commission to be 28%, despite the accuracy limitations of the land-cover information when compared with the field survey component of the Countryside Survey 2000. Numéro de notice : A2004-397 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810410001705316 En ligne : https://doi.org/10.1080/13658810410001705316 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26924
in International journal of geographical information science IJGIS > vol 18 n° 7 (november 2004) . - pp 691 - 708[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-04071 RAB Revue Centre de documentation En réserve L003 Disponible 079-04072 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)PermalinkDetection of land use/land cover changes for the northern part of the Nile delta (Burullus region), Egypt / Kh. M. Dewidar in International Journal of Remote Sensing IJRS, vol 25 n° 20 (October 2004)PermalinkShort-term vegetation succession and erosion identified by airborne remote sensing of Westerschelde salt marshes, the Netherlands / A.G. Thomson in International Journal of Remote Sensing IJRS, vol 25 n° 20 (October 2004)PermalinkApplication d'une méthode de classification orientée objet pour la cartographie de l'occupation du sol : résultats sur ASTER et Landsat ETM / Christina Corbane in Revue Française de Photogrammétrie et de Télédétection, n° 175 (Septembre 2004)PermalinkCouplage de données optiques et radar pour la caractérisation de paysages urbains amazoniens : application à l'île de Cayenne / Jean-François Faure in Revue internationale de géomatique, vol 14 n° 3 - 4 (septembre 2004 – février 2005)PermalinkL'extraction du bâti à partir d'images satellitaires THRS / Serge Lhomme in Revue internationale de géomatique, vol 14 n° 3 - 4 (septembre 2004 – février 2005)PermalinkIntérêt de la fusion d'images à haute résolution spatiale pour la classification de l'occupation du sol en milieu urbain / Yves Cornet in Revue internationale de géomatique, vol 14 n° 3 - 4 (septembre 2004 – février 2005)PermalinkMonitoring surface soil moisture in post-harvest rice areas using C-band radar imagery in NorthEast Thailand / S. Kaojarern in Geocarto international, vol 19 n° 3 (September - November 2004)PermalinkMorphologie mathématique et échelle : extraction du bâti à différentes résolutions spatiales / Claire Matti-Gallice in Revue internationale de géomatique, vol 14 n° 3 - 4 (septembre 2004 – février 2005)PermalinkPotentialités de nouveaux capteurs à très haute résolution spatiale pour l'extraction des réseaux de rues urbains / Renaud Péteri in Revue internationale de géomatique, vol 14 n° 3 - 4 (septembre 2004 – février 2005)PermalinkSpectral mixture analysis of the urban landscape in Indianapolis with Landsat ETM+ imagery / Dong Lu in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 9 (September 2004)PermalinkTree cover discrimination in panchromatic aerial imagery of Pinyon-Juniper woodlands / J.J. Anderson in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 9 (September 2004)PermalinkUrban land-cover change analysis in central Puget Sound / M. Alberti in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 9 (September 2004)PermalinkLIDAR-based geometric reconstruction of boreal type forest stands at single tree level for forest and wildland fire management / F. Morsdorf in Remote sensing of environment, vol 92 n° 3 (30 August 2004)PermalinkNighttime polar cloud detection with MODIS / Y. Liu in Remote sensing of environment, vol 92 n° 2 (15/08/2004)PermalinkDerivation of a threshold function for the advanced very high resolution radiometer 3, 75um channel and its application in automatic cloud discrimination over snow/ice surfaces / X. Xiong in International Journal of Remote Sensing IJRS, vol 25 n° 15 (August 2004)PermalinkAssessment of a semantic statistical approach to detecting land covers change using inconsistent data sets / A. Comber in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 8 (August 2004)PermalinkUsing Thematic Mapper data for change detection and sustainable use of cultivated land: a case study in the Yellow River delta, China / G.X. Zhao in International Journal of Remote Sensing IJRS, vol 25 n° 13 (July 2004)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)PermalinkChange detection techniques / Dong Lu in International Journal of Remote Sensing IJRS, vol 25 n° 12 (June 2004)Permalink