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A comparative study of Australian cartometric and photogrammetric digital elevation model accuracy / J. Walker in Photogrammetric Engineering & Remote Sensing, PERS, vol 72 n° 7 (July 2006)
[article]
Titre : A comparative study of Australian cartometric and photogrammetric digital elevation model accuracy Type de document : Article/Communication Auteurs : J. Walker, Auteur ; G.R. Willgoose, Auteur Année de publication : 2006 Article en page(s) : pp 771 - 779 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] altimétrie
[Termes IGN] analyse comparative
[Termes IGN] Australie
[Termes IGN] cartométrie
[Termes IGN] données de terrain
[Termes IGN] erreur géométrique
[Termes IGN] modèle numérique de surface
[Termes IGN] pente
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] United States Geological SurveyRésumé : (Auteur) This paper explores the accuracy of Digital Elevation Models (DEMs), with particular reference to Australian published DEMs. Direct comparisons were made between cartometric and automatically measured photogrammetric DEMs at various grid spacings with an accurate and dense set of ground truth data. The cartometric dems were found to be more accurate than the photogrammetric DEMs for the small study site in this paper, with RMS errors in elevation of approximately 3.5 m and 4.5 m, respectively, and maximum absolute errors in elevation of approximately 12 m and 28 m, respectively. An important factor for environmental prediction studies is slope, and RMS errors in slope were approximately 6 percent and 20 percent for the cartometric and photogrammetric DEMs, respectively, with maximum absolute errors in slope of approximately 75 percent and 290 percent, respectively. However, use of suitable post-processing such as filtering may reduce the errors in photogrammetric DEMs to at least the same magnitude as cartometric DEMs. The cartometric DEMs were found to satisfy the USGS specifications for Level 2 data. Copyright ASPRS Numéro de notice : A2006-263 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.72.7.771 En ligne : https://doi.org/10.14358/PERS.72.7.771 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27990
in Photogrammetric Engineering & Remote Sensing, PERS > vol 72 n° 7 (July 2006) . - pp 771 - 779[article]Digital terrain model computation from contour lines: how to derive quality information from artifact analysis / Olivier Bonin in Geoinformatica, vol 9 n° 3 (September - November 2005)
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Titre : Digital terrain model computation from contour lines: how to derive quality information from artifact analysis Type de document : Article/Communication Auteurs : Olivier Bonin , Auteur ; Frédéric Rousseaux, Auteur Année de publication : 2005 Article en page(s) : pp 253 - 268 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] artefact
[Termes IGN] contour
[Termes IGN] erreur géométrique
[Termes IGN] incertitude des données
[Termes IGN] modèle numérique de terrain
[Termes IGN] qualité des données
[Termes IGN] Triangulated Irregular NetworkRésumé : (Auteur) Digital Terrain Models constructed from contour lines often contain artifacts originating from their construction from irregularly spaced height measurements. We evaluate and illustrate these artifacts and their impact on terrain parameters. We provide algorithms to correct them as much as possible, and propose a methodology to predict areas where uncertainty still remains because of these artifacts. The analysis of these artifacts enables us to derive qualitative parameters such as “likely over-estimated," “likely underestimated," and "with no significant bias” on the DTM. Our method provides a qualitative description of local uncertainty, which is often more relevant for geographical applications than global quality parameters. Numéro de notice : A2005-327 Affiliation des auteurs : COGIT (1988-2011) Thématique : IMAGERIE Nature : Article DOI : 10.1007/s10707-005-1284-2 En ligne : http://dx.doi.org/10.1007/s10707-005-1284-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27463
in Geoinformatica > vol 9 n° 3 (September - November 2005) . - pp 253 - 268[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-05031 RAB Revue Centre de documentation En réserve L003 Disponible The effect of scene elevation on the coherence of wide-angle crossing-node SAR pairs / T.M. Payne in IEEE Transactions on geoscience and remote sensing, vol 42 n° 3 (March 2004)
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Titre : The effect of scene elevation on the coherence of wide-angle crossing-node SAR pairs Type de document : Article/Communication Auteurs : T.M. Payne, Auteur Année de publication : 2004 Article en page(s) : pp 520 - 528 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] correction angulaire
[Termes IGN] erreur géométrique
[Termes IGN] image radar moirée
[Termes IGN] réflectivité
[Termes IGN] scène
[Termes IGN] tomographieRésumé : (Auteur) The interference between two radar images, acquired from approximately the same location, has a number of uses. In particular, the literature abounds with examples of coherent change detection (CCD) and interferometric synthetic aperture radar (InSAR) uses that, respectively, enable the detection of small changes and the extraction of terrain elevation. In almost all of these examples, collections have been deliberately constrained so that they have almost identical collection geometries. Details of the variation in geometry have been analyzed extensively but generally only with respect to variation in the mean grazing angle. Much of this variation is due to the angular variation in the scene reflectivity; however, when collection geometries differ in other respects, the reduction in performance cannot be entirely explained by angular variations alone. This paper identifies a source of performance degradation when the collection geometries are different for scenes containing local relief. The error is due to approximations during image formation that both the collection geometry and the terrain are flat. The effect of these errors is derived as a blurring kernel to the true scene. The impact of the blurring is then assessed in the interferometric case and broken into common and differential blurring terms to facilitate the impact of some special cases and to explain why the parallel-pass geometry works as well as it does even though the true three-dimensional nature of the collection and the ground are ignored. Numéro de notice : A2004-154 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2003.819879 En ligne : https://doi.org/10.1109/TGRS.2003.819879 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26681
in IEEE Transactions on geoscience and remote sensing > vol 42 n° 3 (March 2004) . - pp 520 - 528[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-04031 RAB Revue Centre de documentation En réserve L003 Disponible Localisation of error areas on a DTM by overlaying altimetric and vector data / Frédéric Rousseaux (2004)
contenu dans Proceedings of the GIS Research UK, 12th Annual Conference, University of East Anglia, Norwich, 28th - 30th April 2004 / A. Lovett (2004)
Titre : Localisation of error areas on a DTM by overlaying altimetric and vector data Type de document : Article/Communication Auteurs : Frédéric Rousseaux, Auteur Editeur : Geographical Information Science Research - UK GISRUK Année de publication : 2004 Conférence : GISRUK 2004, 12th GIS research UK annual conference 28/04/2004 30/04/2004 Norwich Royaume-Uni Importance : pp 77 - 81 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] analyse comparative
[Termes IGN] détection d'erreur
[Termes IGN] données altimétriques
[Termes IGN] données vectorielles
[Termes IGN] erreur géométrique
[Termes IGN] géopositionnement
[Termes IGN] modèle numérique de terrainNuméro de notice : C2004-020 Affiliation des auteurs : COGIT (1988-2011) Thématique : IMAGERIE/INFORMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésNat DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82914 Removing ridging in DTMs: lessons learned applying a quality control strategy / Kevin H. Pegler in GIM international, vol 16 n° 3 (March 2002)
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Titre : Removing ridging in DTMs: lessons learned applying a quality control strategy Type de document : Article/Communication Auteurs : Kevin H. Pegler, Auteur ; David Coleman, Auteur Année de publication : 2002 Article en page(s) : pp 12 - 15 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] contrôle qualité
[Termes IGN] erreur de rendu
[Termes IGN] erreur géométrique
[Termes IGN] modèle numérique de terrainRésumé : (Auteur) Keepers of legacy datasets collected over the past few decades are under increasing pressure to allocate resources for the improvement of such datasets through reprocessing and the performance of even more stringent QC procedures. In response to this situation, Service New Brunswick (SNB) is reprocessing Digital Terrain Models (DTMs) datasets to remove the Ridging Effect. Ridging manifests itself as a series of unnatural crests and troughs. The authors review the Quality Control (QC) management model, QC specifications and the internal and external QC processes. Copyright GITC Numéro de notice : A2002-045 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21962
in GIM international > vol 16 n° 3 (March 2002) . - pp 12 - 15[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-02031 RAB Revue Centre de documentation Revues en salle Disponible Levé laser aéroporté : Etat de l'art, traitement des données, évaluation et comparaison avec des corrélations d'images / Olivier de Joinville in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 166 (Janvier 2002)PermalinkNew advances in error simulation in vector geographical databases / Olivier Bonin (2000)PermalinkSimulation d'erreurs dans une base de données géographique / Lucie Fouqué (1999)PermalinkInternational Symposium on Spatial accuracy of Natural Resource Data Bases, proceedings, 16- 20 May 1994, Williamsburg, Virginia / Russell G. Congalton (1994)PermalinkDecision considerations arising from error propagation through belief calculations / J.L. Kretsch in Photogrammetric Engineering & Remote Sensing, PERS, vol 56 n° 6 (june 1990)PermalinkThe removal of azimuth distorsion in synthetic aperture radar images / J.W. Wood in International Journal of Remote Sensing IJRS, vol 9 n° 6 (June 1988)PermalinkQuality control of photogrammetrically sampled digital elevation models / A. Ostman in Photogrammetric record, vol 12 n° 69 (April - September 1987)PermalinkExemple de calcul géodésique / Henri Marcel Dufour (1975)PermalinkHöhenfehler bei Stereogrammanschlüssen / Rudolf Förstner (1960)PermalinkPropriétés géométriques de l'image du terrain et éléments d'orientation interne des chambres de prises de vues aériennes / R. David (01/01/1960)Permalink