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Géolocalisation en milieu urbain par appariement entre une collection d'images et un SIG 2D / N. Bioret in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI, vol 14 n° 5 (septembre - octobre 2009)
[article]
Titre : Géolocalisation en milieu urbain par appariement entre une collection d'images et un SIG 2D Type de document : Article/Communication Auteurs : N. Bioret, Auteur ; G. Moreau, Auteur ; M. Servieres, Auteur Année de publication : 2009 Article en page(s) : pp 107 - 131 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] appariement géométrique
[Termes IGN] bati
[Termes IGN] couche thématique
[Termes IGN] façade
[Termes IGN] géolocalisation
[Termes IGN] géométrie de l'image
[Termes IGN] image terrestre
[Termes IGN] incertitude géométrique
[Termes IGN] milieu urbain
[Termes IGN] positionnement dynamique
[Termes IGN] réseau routier
[Termes IGN] SIG 2D
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Nous proposons un outil de géolocalisation combinant l'extraction d'information sur des images de façades et les requêtes dans un système d'information géographique 2D (SIG). Sur des photographies de scènes urbaines, nous calculons les angles et les rapports des largeurs entre les façades reconnues. Nous calculons aussi les incertitudes sur ces éléments géométriques en fonction des erreurs de mesure dans l'image, puis nous les transformons en tolérances dans des requêtes dans un SIG. Un ensemble de poses est alors généré. Pour éliminer les poses incorrectes, nous vérifions la cohérence de chaque pose avec les couches route et bâtiment du SIG, et nous combinons les informations issues de plusieurs images. L'utilisation de tolérances dans les requêtes garantit que la pose correcte n'est jamais éliminée. Nous montrons sur des exemples réels qu'en utilisant un SIG à jour, on peut déterminer la pose correcte. Copyright Lavoisier Numéro de notice : A2009-397 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30028
in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI > vol 14 n° 5 (septembre - octobre 2009) . - pp 107 - 131[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 093-09051 RAB Revue Centre de documentation En réserve L003 Disponible Digital photogrammetry / W. Linder (2009)
Titre : Digital photogrammetry : a practical course Type de document : Guide/Manuel Auteurs : W. Linder, Auteur Mention d'édition : 3 Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2009 Importance : 220 p. Format : 16 x 24 cm + 1 paire de lunettes + 1 cederom ISBN/ISSN/EAN : 978-3-540-92724-2 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation
[Termes IGN] compensation par bloc
[Termes IGN] limite de résolution géométrique
[Termes IGN] limite de résolution radiométrique
[Termes IGN] modèle numérique de terrain
[Termes IGN] mosaïque d'images
[Termes IGN] orientation interne
[Termes IGN] orthoimage
[Termes IGN] photogrammétrie métrologiqueIndex. décimale : 33.30 Photogrammétrie numérique Résumé : (Editeur) The third edition is an "all-in-one" combination of basic theory and practical exercises. Potential readers/users are students of Photogrammetry, Geodesy, Geography and other sciences, but also all who are interested in this topic. No prior knowledge is necessary, except the handling of standard PCs. Theory is presented true to the motto "as little as possible, but as much as necessary". The main part of the book contains several tutorials. In increasing complexity, accompanied by texts explaining further theory, the reader can proceed step by step through the particular working parts. All intermediate as well as the final results are discussed with reference to accuracy and error handling. Most of the standard work in Digital Photogrammetry is shown and trained for example scanning, image orientation, mono and stereo plotting, aerial triangulation measurement (manual and automatic), block adjustment, automatic creation of surface models via image matching, creation of ortho images and mosaics, and others. Not only standard situations are dealt with but also more complex ones, such as unknown camera data, extreme relief or areas with very low contrast. Examples of both aerial and close-range photogrammetry present the power of these type of measurement techniques. The software is not limited to the example data included but may be used for personal projects. Part of the book comprises a complete description of the software. Note de contenu : 1 Introduction
1.1 Basic idea and main task of photogrammetry
1.2 Why photogrammetry ?
1.3 Image sources: Analogue and digital cameras
1.4 Digital consumer cameras
1.5 Short history of photogrammetric evaluation methods
1.6 Geometric principles 1: Camera position, focal length
1.7 Geometric principles 2: Image orientation
1.8 Geometric principles 3: Relative camera positions (stereo)
1.9 Some definitions
1.10 Length and angle units
1.11 A typical workflow in photogrammetry
2 Included software and data
2.1 Hardware requirements, operating system
2.2 Image material
2.3 Overview of the software
2.4 Installation
2.5 Additional programmes, copyright, data
2.6 General remarks
2.7 Software versions, support
3 Scanning of photos
3.1 Scanner types
3.2 Geometric resolution
3.3 Radiometric resolution
3.4 Some practical advice
3.5 Import of the scanned images
4 Example 1: A single model
4.1 Project definition
4.2 Orientation of the images
4.3 Model definition
4.4 Stereoscopic viewing
4.5 Measurement of object co-ordinates
4.6 Creation of DTMs via image matching
4.7 Ortho images
5 Example 2: Aerial triangulation
5.1 Aerial triangulation measurement (ATM)
5.2 Block adjustment with BLUH
5.3 Mosaics of DTMs and ortho images
6 Example 3: Some special cases
6.1 Scanning aerial photos with an A4 scanner
6.2 Interior orientation without camera parameters
6.3 Images from a digital camera
6.4 An example of close-range photogrammetry
6.5 Some remarks about lens distortion
6.6 Stereo images from satellites
6.7 Stereo images from flatbed scanners
6.8 A view into the future: Photogrammetry in 2020
7 Programme description
7.1 Some definitions
7.2 Basic functions
7.3 Aims and limits of the programme
7.4 Operating the programme
7.5 Buttons in the graphics windows
7.6 File handling
7.7 Pre programmes
7.8 Aerial triangulation measurement (ATM)
7.9 Processing
7.10 Display
7.11 Aerial triangulation with BLUHNuméro de notice : 20593 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Manuel Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=46832 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20593-01 33.30 Livre Centre de documentation Photogrammétrie - Lasergrammétrie Disponible DMC geometry analysis and virtual image characterisation / R. Alamus in Photogrammetric record, vol 23 n° 124 (December 2008 - February 2009)
[article]
Titre : DMC geometry analysis and virtual image characterisation Type de document : Article/Communication Auteurs : R. Alamus, Auteur ; W. Kornus, 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 353 - 371 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] aérotriangulation automatisée
[Termes IGN] auto-étalonnage
[Termes IGN] chambre à grand format
[Termes IGN] compensation par faisceaux
[Termes IGN] DMC
[Termes IGN] erreur systématique
[Termes IGN] espace image
[Termes IGN] géométrie de l'image
[Termes IGN] géoréférencement
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] points homologues
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] rapport base hauteur
[Termes IGN] résiduRésumé : (Auteur) Since the advent of the first large format digital aerial cameras, high expectations have been placed on their performance. The dream of obtaining aerial images virtually free of geometric errors and with greater radiometric quality is getting close. Nevertheless, systematic image residuals, unexpected height errors in aerial triangulation and the need for additional self-calibration parameters have been reported since 2005. In this paper a preliminary analysis of the theoretical accuracies in aerial triangulation using the Zeiss/Intergraph (Z/I) Digital Mapping Camera (DMC) and an analogue camera is conducted, motivated by those recent reports. This analysis considers a mathematical model where the image has conical geometry and is free of systematic errors. The influence on the propagated block accuracy of the base-to-height ratio, image pointing precision (both manual and automatic), GPS observations for projection centres and of pass/tie point density is studied. Moreover, the expected accuracy in the aerial triangulation of analogue images using current procedures (having regard to the a priori accuracy for image pointing, ground control measurement and GPS and pass/tie point density) is computed. The goal of this theoretical study is to find the requirements for aerial triangulation with DMC data which would yield the same or an even higher level of accuracy than that obtained with analogue data under the same conditions. The paper continues with a check on the conclusions of this theoretical analysis, using real data-sets and aerial triangulation set-up, which fit with the theoretical analysis. The results prove that the expected theoretical accuracy in aerial triangulation is only obtained if an appropriate self-calibration parameter set is considered in the bundle block adjustment and/or if good GPS observations are available. These requirements result from the unfavourable propagation from unmodelled systematic error in the DMC image blocks. Some authors have detected systematic residuals in the order of one-tenth of a pixel rms in DMC image space. For this reason, investigations are being carried out on systematic error characterisation, distribution in image space and stability over time and flying height, and systematic error modelling, using self-calibration parameter sets and applying correction grids. Finally, conclusions are drawn from the investigations. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-417 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00504.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00504.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29488
in Photogrammetric record > vol 23 n° 124 (December 2008 - February 2009) . - pp 353 - 371[article]High resolution elevation data derived from stereoscopic CORONA imagery ground control: an approach using IKONOS and SRTM data / Nikolaos Galiatsatos in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 9 (September 2008)
[article]
Titre : High resolution elevation data derived from stereoscopic CORONA imagery ground control: an approach using IKONOS and SRTM data Type de document : Article/Communication Auteurs : Nikolaos Galiatsatos, Auteur ; N.M. Donoghue, Auteur ; G. Philip, Auteur Année de publication : 2008 Article en page(s) : pp 1093 - 1106 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] contour
[Termes IGN] correction géométrique
[Termes IGN] distorsion d'image
[Termes IGN] estimation de précision
[Termes IGN] géométrie de l'image
[Termes IGN] image Corona
[Termes IGN] image Ikonos
[Termes IGN] image SRTM
[Termes IGN] MNS SRTM
[Termes IGN] modèle numérique de surface
[Termes IGN] modèle stéréoscopique
[Termes IGN] radargrammétrie
[Termes IGN] SyrieRésumé : (Auteur) The first space mission to provide stereoscopic imagery of the Earth’s surface was from the American CORONA spy satellite program from which it is possible to generate Digital Elevation Models (DEMs). CORONA imagery and derived DEMs are of most value in areas where conventional topographic maps are of poor quality, but the problem has been that until recently, it was difficult to assess their accuracy. This paper presents a methodology to create a high quality DEM from CORONA imagery using horizontal ground control derived from Ikonos space imagery and vertical ground control from map-based contour lines. Such DEMs can be produced without the need for field-based ground control measurements which is an advantage in many parts of world where ground surveying is difficult. Knowledge of CORONA image distortions, satellite geometry, ground resolution, and film scanning are important factors that can affect the DEM extraction process. A study area in Syria is used to demonstrate the method, and Shuttle Radar Topography Mission (SRTM) data is used to perform quantitative and qualitative accuracy assessment of the automatically extracted DEM. The SRTM data has enormous importance for validating the quality of CORONA DEMs, and so, unlocking the potential of a largely untapped part of the archive. We conclude that CORONA data can produce unbiased, high-resolution DEM data which may be valuable for researchers working in countries where topographic data is difficult to obtain. Copyright ASPRS Numéro de notice : A2008-346 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.74.9.1093 En ligne : https://doi.org/10.14358/PERS.74.9.1093 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29339
in Photogrammetric Engineering & Remote Sensing, PERS > vol 74 n° 9 (September 2008) . - pp 1093 - 1106[article]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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