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Relative height error analysis of TanDEM-X elevation data / P. Rizzoli in ISPRS Journal of photogrammetry and remote sensing, vol 73 (September 2012)
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Titre : Relative height error analysis of TanDEM-X elevation data Type de document : Article/Communication Auteurs : P. Rizzoli, Auteur ; B. Braütigam, Auteur ; T. Kraus, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 30 - 38 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] décorrélation
[Termes IGN] erreur
[Termes IGN] image TanDEM-X
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] modèle numérique de surfaceRésumé : (Auteur) The primary objective of the TanDEM-X mission is the generation of a global high resolution digital elevation model (DEM) with single-pass SAR interferometry. Within the mission, the Earth’s land masses will be mapped at least twice to achieve relative vertical accuracies in the order of two meters. This paper presents an analysis of the mission performance in terms of the relative height error showing first results obtained from TanDEM-X interferometric data. For critical areas characterized by strong volume decorrelation phenomena or mountainous terrain, different approaches to improve the final height error are investigated as well. Numéro de notice : A2012-312 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.06.004 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.06.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31758
in ISPRS Journal of photogrammetry and remote sensing > vol 73 (September 2012) . - pp 30 - 38[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2012071 SL Revue Centre de documentation Revues en salle Disponible TanDEM-X calibrated Raw DEM generation / C. Rossi in ISPRS Journal of photogrammetry and remote sensing, vol 73 (September 2012)
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Titre : TanDEM-X calibrated Raw DEM generation Type de document : Article/Communication Auteurs : C. Rossi, Auteur ; Fernando Rodríguez González, Auteur ; T. Fritz, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 12 - 20 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] image TanDEM-X
[Termes IGN] modèle numérique de surface
[Termes IGN] traitement d'image radarRésumé : (Auteur) The TanDEM-X mission successfully started on June 21st 2010 with the launch of the German radar satellite TDX, placed in orbit in close formation with the TerraSAR-X (TSX) satellite, and establishing the first spaceborne bistatic interferometer. The processing of SAR raw data to the Raw DEM is performed by one single processor, the Integrated TanDEM-X Processor (ITP). The quality of the Raw DEM is a fundamental parameter for the mission planning. In this paper, a novel quality indicator is derived. It is based on the comparison of the interferometric measure, the unwrapped phase, and the stereo-radargrammetric measure, the geometrical shifts computed in the coregistration stage. By stating the accuracy of the unwrapped phase, it constitutes a useful parameter for the determination of problematic scenes, which will be resubmitted to the dual baseline phase unwrapping processing chain for the mitigation of phase unwrapping errors. The stereo-radargrammetric measure is also operationally used for the Raw DEM absolute calibration through an accurate estimation of the absolute phase offset. This paper examines the interferometric algorithms implemented for the operational TanDEM-X Raw DEM generation, focusing particularly on its quality assessment and its calibration. Numéro de notice : A2012-310 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.05.014 Date de publication en ligne : 02/07/2012 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.05.014 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31756
in ISPRS Journal of photogrammetry and remote sensing > vol 73 (September 2012) . - pp 12 - 20[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2012071 SL Revue Centre de documentation Revues en salle Disponible Exploring geomorphometry through user generated content: Comparing an unsupervised geomorphometric classification with terms attached to georeferenced images in Great Britain / C. Gschwend in Transactions in GIS, vol 16 n° 4 (August 2012)
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Titre : Exploring geomorphometry through user generated content: Comparing an unsupervised geomorphometric classification with terms attached to georeferenced images in Great Britain Type de document : Article/Communication Auteurs : C. Gschwend, Auteur ; Ross S. Purves, Auteur Année de publication : 2012 Article en page(s) : pp 499 - 522 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] analyse comparative
[Termes IGN] classification non dirigée
[Termes IGN] données localisées de référence
[Termes IGN] données localisées des bénévoles
[Termes IGN] géomorphométrie
[Termes IGN] Grande-Bretagne
[Termes IGN] modèle numérique de surface
[Termes IGN] reliefRésumé : (Auteur) User generated content such as the georeferenced images and their associated tags found in Flickr provides us with opportunities to explore how the world is described in the non-scientific, everyday language used by contributors. Geomorphometry, the quantitative study of landforms, provides methods to classify Digital Elevation Models (DEMs) according to attributes such as slope and convexity. In this article we compare the terms used in Flickr and Geograph in Great Britian to describe georeferenced images to a quantitative, unsupervised classification of a DEM, using a well established method, and explore the variation of terms across geomorphometric classes and space. Anthropogenic terms are primarily associated with more gentle slopes, while terms which refer to objects such as mountains and waterfalls are typical of steeper slopes. Terms vary both across and within classes, and the source of the user generated content has an influence on the type of term used with Geograph, a collection which aims to document the geography of Great Britain, dominated by features which might be observed on a map. Numéro de notice : A2012-364 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01307.x Date de publication en ligne : 03/05/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01307.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31810
in Transactions in GIS > vol 16 n° 4 (August 2012) . - pp 499 - 522[article]Multidirectional visibility index for analytical shading enhancement / T. Podobnikar in Cartographic journal (the), vol 49 n° 3 (August 2012)
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Titre : Multidirectional visibility index for analytical shading enhancement Type de document : Article/Communication Auteurs : T. Podobnikar, Auteur Année de publication : 2012 Article en page(s) : pp 195 - 207 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] azimut
[Termes IGN] estompage
[Termes IGN] méthode robuste
[Termes IGN] modèle numérique de surface
[Termes IGN] ombre
[Termes IGN] pente
[Termes IGN] relief
[Termes IGN] visibilité
[Termes IGN] visualisation 3DRésumé : (Auteur) A novel method called multidirectional visibility index (MVI) has been developed and verified. The MVI improves standard cartographic analytical shading with a number of enhancements to topographic detail and prominent structures, i.e. the portrayal of flat areas in lighter tones, the accentuation of morphologic edges, and the multiscale visualisation of morphologic terrain features. The procedure requires a digital elevation model (DEM) and involves the following steps: visibility mask computation; the respective multidirectional altering of the azimuth and elevation angle; the generation of continuous grid MVIs that indicate upper/lower views, quasi-slope, and relative relief; and an appropriate visualisation of the relevant MVI as a standalone technique or in combination with standard hill-shaded relief. The modelling parameters are robust and therefore highly adaptive to different landforms. Numéro de notice : A2012-535 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000012 Date de publication en ligne : 22/11/2013 En ligne : https://doi.org/10.1179/1743277412Y.0000000012 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31981
in Cartographic journal (the) > vol 49 n° 3 (August 2012) . - pp 195 - 207[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2012031 RAB Revue Centre de documentation En réserve L003 Disponible Extraction of vineyards out of aerial photo-image using texture information / Arnaud Le Bris in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol I-3 (2012)
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Titre : Extraction of vineyards out of aerial photo-image using texture information Type de document : Article/Communication Auteurs : Arnaud Le Bris , Auteur
Année de publication : 2012 Conférence : ISPRS 2012, Commission 3, 22th international congress 25/08/2012 01/09/2012 Melbourne Australie OA ISPRS Annals Commission 3 Article en page(s) : pp 383 - 388 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] détection automatique
[Termes IGN] occupation du sol
[Termes IGN] orthoimage
[Termes IGN] SIFT (algorithme)
[Termes IGN] transformation de Fourier
[Termes IGN] viticultureRésumé : (auteur) A cartography of vineyards is required by many mapping agencies, both to draw topographic maps and to complete the "vineyard" layer of large scale land cover databases. In this paper, two distinct approaches are proposed and tested to achieve a (semi-)automatic detection of vineyards task out of 50cm ground resolution ortho-images. Both are object based approaches relying on image texture analysis in homogeneous land cover regions. Therefore, the first step (common to both approaches) is a segmentation of the image into homogeneous land cover regions. These regions can then be classified as vineyards or not by the next approaches. A first approach consists in a frequency analysis of the image texture in each region. A semi-variogram is first calculated from the ortho-image for each region of the segmentation. A Fourier transform (FFT) of this semi-variogram of the image is then considered. If a periodic signal with a high frequency (i.e. of which the frequency is upper than a threshold) is identified, the region is labelled as a vineyard. The second approach is a supervised (per region) land cover classification one. It uses texture indexes calculated from ortho-images as input image information. In particular, some texture indexes derived from SIFT descriptors calculated from ortho-images have been used in the experiments, giving good results. Numéro de notice : A2012-761 Affiliation des auteurs : LASTIG MATIS (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5194/isprsannals-I-3-383-2012 Date de publication en ligne : 23/07/2012 En ligne : https://doi.org/10.5194/isprsannals-I-3-383-2012 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101199
in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences > vol I-3 (2012) . - pp 383 - 388[article]Building detection in complex thorough effective separation of buildings from trees / M. Awrangjeb in Photogrammetric Engineering & Remote Sensing, PERS, vol 78 n° 7 (July 2012)
PermalinkA deterministic method to integrate triangular meshes of different resolution / Giorgio Agugiaro in ISPRS Journal of photogrammetry and remote sensing, vol 71 (July 2012)
Permalink"Yu laid out the lands": georeferencing the Chinese Yujitu (Map of the Tracks of Yu) of 1136 / A. Akin in Cartography and Geographic Information Science, vol 39 n° 3 (July 2012)
PermalinkAn interactive 3-Dimensional database applied to the conservation of a painted chapel / Jean-Marc Vallet in International Journal of Heritage in the Digital Era, vol 1 n° 2 (June 2012)
PermalinkApproximation theory applied to DEM vertical accuracy assessment / X. Liu in Transactions in GIS, vol 16 n° 3 (June 2012)
PermalinkCapturing sail shape in a wind tunnel environment / M. Smith in Photogrammetric record, vol 27 n° 138 (June - August 2012)
PermalinkPermalinkPermalinkOutils de prétraitements des images optiques Kalideos / Bruno Lafrance in Revue Française de Photogrammétrie et de Télédétection, n° 197 (Juin 2012)
PermalinkVers une cartographie des trajectoires des communautés récifales en réponse aux perturbations : approche du blanchiment coralien sur l'île de la Réunion / G. Pennober in Revue Française de Photogrammétrie et de Télédétection, n° 197 (Juin 2012)
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