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Orientation and self-calibration of ALOS PRISM imagery / S. Kocaman in Photogrammetric record, vol 23 n° 123 (September - November 2008)
[article]
Titre : Orientation and self-calibration of ALOS PRISM imagery Type de document : Article/Communication Auteurs : S. Kocaman, Auteur ; Armin W. Gruen, Auteur Année de publication : 2008 Conférence : ISPRS 2007, High-Resolution Earth Imaging for Geospatial Information workshop 29/05/2007 01/06/2007 Hanovre Allemagne Article en page(s) : pp 323 - 340 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] auto-étalonnage
[Termes IGN] capteur en peigne
[Termes IGN] compensation par faisceaux
[Termes IGN] détecteur à transfert de charge
[Termes IGN] élément d'orientation interne
[Termes IGN] erreur systématique
[Termes IGN] géoréférencement
[Termes IGN] image à très haute résolution
[Termes IGN] image ALOS-PRISM
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] orientation d'image
[Termes IGN] pas d'échantillonnage au solRésumé : (Auteur) High-resolution satellite images (HRSI) at sub-5 m footprint are becoming increasingly available. A set of algorithms for processing of HRSI has been developed at the Institute of Geodesy and Photogrammetry (IGP), ETH Zurich and realised in a software suite called Satellite Image Precision Processing (SAT-PP). The software has been used for the processing of a number of high resolution satellite sensors, such as IKONOS, QuickBird, SPOT 5 HRS/HRG, Cartosat-1 and ALOS PRISM. PRISM is a panchromatic radiometer carried on board the Japanese ALOS satellite. It has three optical systems for forward, nadir and backward view with 2·5 m ground sample distance (GSD). The photogrammetric processing of PRISM imagery has special requirements owing to the linear array CCD sensor structure and special characteristics of the interior geometry and exterior orientation. As a member of the ALOS calibration/validation team, new algorithms for geometric processing of the PRISM images have been implemented at the IGP, in particular for the interior orientation and self-calibration. The physical sensor model in SAT-PP is refined according to the multiple camera heads of the sensor. The rigorous model for PRISM is based on a modified bundle adjustment with the possibility of using two different trajectory models. The self-calibration is introduced into the adjustment to model the systematic errors of the sensor and the system as a whole. The methods of georeferencing and digital surface model (DSM) generation were tested using the PRISM data-sets acquired over five different testfields. The rigorous sensor model performed well and resulted in sub-pixel accuracy for point positioning in all testfields. The self-calibration model has been tested in two different phases of the project separately. In the initial phase, where interior orientation data was not available, the use of the self-calibration was essential to achieve good accuracy. However, in the later phase the relative positions of the CCD chip detectors on the focal plane were provided by the Japan Aerospace Exploration Agency (JAXA) and the improvements by self-calibration became less significant. A detailed analysis of the DSM generation is presented in another publication. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-396 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article DOI : 10.1111/j.1477-9730.2008.00493.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00493.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76551
in Photogrammetric record > vol 23 n° 123 (September - November 2008) . - pp 323 - 340[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-08031 RAB Revue Centre de documentation En réserve L003 Disponible Potential accuracy of image orientation of small satellites: a case study of CHRIS/Proba data / Ahmed Shaker in Photogrammetric record, vol 23 n° 123 (September - November 2008)
[article]
Titre : Potential accuracy of image orientation of small satellites: a case study of CHRIS/Proba data Type de document : Article/Communication Auteurs : Ahmed Shaker, Auteur ; J. Nichol, Auteur ; M. Wong, Auteur Année de publication : 2008 Conférence : ISPRS 2007, High-Resolution Earth Imaging for Geospatial Information workshop 29/05/2007 01/06/2007 Hanovre Allemagne Article en page(s) : pp 275 - 289 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] angle de visée
[Termes IGN] correction géométrique
[Termes IGN] espace image
[Termes IGN] espace objet
[Termes IGN] géoréférencement
[Termes IGN] Hong-Kong
[Termes IGN] image hyperspectrale
[Termes IGN] image PROBA-CHRIS
[Termes IGN] minisatellite
[Termes IGN] modèle empirique
[Termes IGN] modèle stéréoscopique
[Termes IGN] montagne
[Termes IGN] orientation d'image
[Termes IGN] point d'appui
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) The new technology of small satellites (microsatellites) opens a new era in satellite observation of the earth. Small satellites such as ESA's Project for On-Board Autonomy (Proba), launched on 22nd October 2001, are of interest due to their low cost, flexibility of positioning, and capability for multiangular scanning in both across-track and along-track directions. Proba's Compact High Resolution Imaging Spectrometer (CHRIS) provides multidirectional, as well as hyperspectral, data at 18 m resolution and is supplied mainly to the scientific community for experimental environmental applications. This research evaluates the use of various empirical mathematical models for small satellite orientation and terrain modelling using the multidirectional viewing capabilities of CHRIS data. Geometric correction and co-registration of multiangle images is essential for their use for data extraction. Ideally, rigorous mathematical models should be formulated which precisely describe the satellite motion and represent the relationship between the image and the object spaces. The use of rigorous mathematical models has not been fully investigated using CHRIS/Proba data, because the satellite information provided is not adequate for rigorous sensor modelling. In this paper, several alternative empirical models are tested for the orientation and 3D geopositioning of CHRIS sensor images. The images used in this study cover extremely mountainous terrain in central Hong Kong. A set of five images from CHRIS/Proba taken in December 2005 from different angles are used to test the applicability of different forms of the empirical models for 3D geopositioning. The accuracy of the models is tested for different numbers and distribution of ground control points (GCPs) using different combinations of observation angles and base-to-height ratios. The results obtained show high integrity of the models used for CHRIS/Proba image orientation. In some cases, accuracy better than 2 pixels can be achieved using a modest number of GCPs. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-393 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00490.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00490.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29386
in Photogrammetric record > vol 23 n° 123 (September - November 2008) . - pp 275 - 289[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-08031 RAB Revue Centre de documentation En réserve L003 Disponible Effects of DEM resolution and source on soil erosion modelling: a case study using the WEPP model / J.X. Zhang in International journal of geographical information science IJGIS, vol 22 n° 8-9 (august 2008)
[article]
Titre : Effects of DEM resolution and source on soil erosion modelling: a case study using the WEPP model Type de document : Article/Communication Auteurs : J.X. Zhang, Auteur ; K.T. Chang, Auteur ; J. Qiong, Auteur Année de publication : 2008 Article en page(s) : pp 925 - 942 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] bassin hydrographique
[Termes IGN] bassin sédimentaire
[Termes IGN] érosion hydrique
[Termes IGN] Idaho (Etats-Unis)
[Termes IGN] limite de résolution géométrique
[Termes IGN] modèle de simulation
[Termes IGN] modèle numérique de surface
[Termes IGN] pente
[Termes IGN] précision des données
[Termes IGN] prévention des risques
[Termes IGN] réseau hydrographique
[Termes IGN] ruissellementRésumé : (Auteur) Digital elevation models (DEMs) vary in resolution and accuracy by the production method. DEMs with different resolutions and accuracies can generate varied topographic and hydrological features, which can in turn affect predictions by soil erosion models, such as the WEPP (Water Erosion Prediction Project) model. This study investigates the effects of DEMs on deriving topographic and hydrological attributes, and on predicting watershed erosion using WEPP v2006.5. Six DEMs at three resolutions from three sources were prepared for two small forested watersheds located in northern Idaho, USA. These DEMs were used to calculate topographic and hydrological parameters that served as inputs to WEPP. The model results of sediment yields and runoffs were compared with field observations. For both watersheds, DEMs with different resolutions and sources generated varied watershed shapes and structures, which in turn led to different extracted hill slope and channel lengths and gradients, and produced substantially different erosion predictions by WEPP. Copyright Taylor & Francis Numéro de notice : A2008-309 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810701776817 En ligne : https://doi.org/10.1080/13658810701776817 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29302
in International journal of geographical information science IJGIS > vol 22 n° 8-9 (august 2008) . - pp 925 - 942[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08051 RAB Revue Centre de documentation En réserve L003 Disponible 079-08052 RAB Revue Centre de documentation En réserve L003 Disponible SRTM resample with short distance-low nugget kriging / C.H. Grohmann in International journal of geographical information science IJGIS, vol 22 n° 8-9 (august 2008)
[article]
Titre : SRTM resample with short distance-low nugget kriging Type de document : Article/Communication Auteurs : C.H. Grohmann, Auteur ; S.S. Steiner, Auteur Année de publication : 2008 Article en page(s) : pp 895 - 806 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] géostatistique
[Termes IGN] image radar moirée
[Termes IGN] image SRTM
[Termes IGN] interpolation
[Termes IGN] interpolation inversement proportionnelle à la distance
[Termes IGN] krigeage
[Termes IGN] MNS SRTM
[Termes IGN] modèle numérique de surface
[Termes IGN] modèle numérique de terrain
[Termes IGN] radargrammétrie
[Termes IGN] rééchantillonnage
[Termes IGN] variogrammeRésumé : (Auteur) The shuttle radar topography mission (SRTM), was flow on the space shuttle Endeavour in February 2000, with the objective of acquiring a digital elevation model of all land between 60° north latitude and 56° south latitude, using interferometric synthetic aperture radar (InSAR) techniques. The SRTM data are distributed at horizontal resolution of 1 arc-second (?30 m) for areas within the USA and at 3 arc-second (?90 m) resolution for the rest of the world. A resolution of 90 m can be considered suitable for the small or medium-scale analysis, but it is too coarse for more detailed purposes. One alternative is to interpolate the SRTM data at a finer resolution; it will not increase the level of detail of the original digital elevation model (DEM), but it will lead to a surface where there is the coherence of angular properties (i.e. slope, aspect) between neighbouring pixels, which is an important characteristic when dealing with terrain analysis. This work intents to show how the proper adjustment of variogram and kriging parameters, namely the nugget effect and the maximum distance within which values are used in interpolation, can be set to achieve quality results on resampling SRTM data from 3” to 1”. We present for a test area in western USA, which includes different adjustment schemes (changes in nugget effect value and in the interpolation radius) and comparisons with the original 1” model of the area, with the national elevation dataset (NED) DEMs, and with other interpolation methods (splines and inverse distance weighted (IDW)). The basic concepts for using kriging to resample terrain data are: (i) working only with the immediate neighbourhood of the predicted point, due to the high spatial correlation of the topographic surface and omnidirectional behaviour of variogram in short distances; (ii) adding a very small random variation to the coordinates of the points prior to interpolation, to avoid punctual artifacts generated by predicted points with the same location than original data points and; (iii) using a small value of nugget effect, to avoid smoothing that can obliterate terrain features. Drainages derived from the surfaces interpolated by kriging and by splines have a good agreement with streams derived from the 1” NED, with correct identification of watersheds, even though a few differences occur in the positions of some rivers in flat areas. Although the 1” surfaces resampled by kriging and splines are very similar, we consider the results produced by kriging as superior, since the spline-interpolated surface still presented some noise and linear artifacts, which were removed by kriging. Copyright Taylor & Francis Numéro de notice : A2008-307 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 13658810701730152 En ligne : https://doi.org/10.1080/13658810701730152 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29300
in International journal of geographical information science IJGIS > vol 22 n° 8-9 (august 2008) . - pp 895 - 806[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08051 RAB Revue Centre de documentation En réserve L003 Disponible 079-08052 RAB Revue Centre de documentation En réserve L003 Disponible 3D-model of Siberian fortress / M. Anikushkin in GIM international, vol 22 n° 7 (July 2008)
[article]
Titre : 3D-model of Siberian fortress Type de document : Article/Communication Auteurs : M. Anikushkin, Auteur ; S. Kotelnikov, Auteur Année de publication : 2008 Article en page(s) : pp 13 - 15 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] archéométrie
[Termes IGN] carte topographique
[Termes IGN] champ magnétique local
[Termes IGN] données laser
[Termes IGN] fortification
[Termes IGN] instrumentation Trimble
[Termes IGN] lasergrammétrie
[Termes IGN] lever souterrain
[Termes IGN] modèle numérique de surface
[Termes IGN] modélisation 3D
[Termes IGN] restitution
[Termes IGN] Sibérie
[Termes IGN] site archéologique
[Termes IGN] Triangulated Irregular NetworkRésumé : (Auteur) Exploration and preservation of Por-Bajin fortress, testimony to the former presence of ancient civilisation in the wildness of Siberia, is one of the largest-scale projects in modern archeology. Combining terrestrial laser-scanning, magnetic field and electrical resistance data revealed anomalies that had remained concealed during fieldwork and in aerial photos. Copyright Reed Business Information Numéro de notice : A2008-218 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29213
in GIM international > vol 22 n° 7 (July 2008) . - pp 13 - 15[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-08071 RAB Revue Centre de documentation En réserve L003 Disponible Populating a building Multi Representation Data Base with photogrammetric tools: recent progress / B. Frederique in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 4 (July - August 2008)PermalinkAccuracy assessment of Lidar-derived digital elevation models / F. Aguilar in Photogrammetric record, vol 23 n° 122 (June - August 2008)PermalinkFrom 2D to 3D land parcelation: fusion of LiDAR data and cadastral maps / S. Filin in SaLIS Surveying and land information science, vol 68 n° 2 (June 2008)PermalinkGeoeye's next-generation imaging satellite / J. Croft in Geoinformatics, vol 11 n° 4 (01/06/2008)PermalinkLeast visible path analysis in raster terrain / M. Lu in International journal of geographical information science IJGIS, vol 22 n° 6-7 (june 2008)PermalinkA model-based approach for reconstructing a terrain surface from airborne Lidar data / Gunho Sohn in Photogrammetric record, vol 23 n° 122 (June - August 2008)PermalinkThe digital aerial photography revolution / S. Cassettari in Geoinformatics, vol 11 n° 4 (01/06/2008)PermalinkVideogrammetric monitoring of as-built membrane roof structures / S.Y. Lin in Photogrammetric record, vol 23 n° 122 (June - August 2008)PermalinkAutomatic 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)PermalinkComparison of remotely sensed water stages from LiDAR, topographic contours and SRTM / G. Schumann in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 3 (May - June 2008)Permalink