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Synergetic fusion of GPS and photogrammetrically generated elevation models / Jon P. Mills in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 4 (April 2003)
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Titre : Synergetic fusion of GPS and photogrammetrically generated elevation models Type de document : Article/Communication Auteurs : Jon P. Mills, Auteur ; S.J. Buckley, Auteur ; H.L. Mitchell, Auteur Année de publication : 2003 Article en page(s) : pp 341 - 349 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] appariement géométrique
[Termes IGN] coût
[Termes IGN] données GPS
[Termes IGN] erreur systématique
[Termes IGN] fusion de données
[Termes IGN] GPS en mode cinématique
[Termes IGN] image numérique
[Termes IGN] méthode des moindres carrés
[Termes IGN] modèle numérique de surface
[Termes IGN] orientation relative
[Termes IGN] photographie aérienne
[Termes IGN] point d'appui
[Termes IGN] restitutionRésumé : (Auteur) Digital elevation models (DEMs) produced from photogrammetric data sources have long relied on the use of ground control points to give them scale and orientation. However, in areas such as coastlines, landslides, or glaciers, where identification of suitable natural features and premarking is difficult, the use of conventional ground control may be unfeasible. This paper reports on research that uses independently collected DEMs derived from kinematic GPS to orient surfaces produced by aerial photogrammetric methods, using a leastsquares surface matching algorithm. During algorithm development, three stages of testing were carried out, Using increasingly more complex datasets. Initially, simulated surfaces were used to validate the matching theory and program. Then, a DEM derived from conventional aerial photography was matched with a GPS model, highlighting the effectiveness of surface matching to recover systematic errors in datosets. Finally, surfaces derived from small format digital imagery were successfully fused with wireframe GPS surfaces, the high redundancy and automation potential creating an elegant and cheaper alternative to photocontrol. Numéro de notice : A2003-109 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.69.4.341 En ligne : https://doi.org/10.14358/PERS.69.4.341 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22405
in Photogrammetric Engineering & Remote Sensing, PERS > vol 69 n° 4 (April 2003) . - pp 341 - 349[article]Accuracy prediction for ortho-image generation / Amnon Krupnik in Photogrammetric record, vol 18 n° 101 (March - May 2003)
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Titre : Accuracy prediction for ortho-image generation Type de document : Article/Communication Auteurs : Amnon Krupnik, Auteur Année de publication : 2003 Article en page(s) : pp 41 - 58 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Orthophotographie, orthoimage
[Termes IGN] erreur de mesure
[Termes IGN] modèle numérique de terrain
[Termes IGN] orthoimage
[Termes IGN] pente
[Termes IGN] point d'appui
[Termes IGN] points homologues
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] propagation d'erreurRésumé : (Auteur) This paper revisits the basic mathematical formulation of orthoimage (digital orthophoto) generation. The main objective is to provide an approach for predicting the accuracy of an orthoimage, according to the accuracy of the digital elevation model (DEM), control points and image measurements, the configuration of fiducial, tie and control points, and the ground slope. The approach is based on applying the wellknown law of error propagation to the mathematical model of orthoimage generation. Although it may seem intuitive for professionals in the field of photogrammetry, such an approach is essential in the era when specialists in other fields use offtheshelf software packages for orthoimage generation. Simulations with the derived approach show that the accuracy of the orthoimage is more sensitive to errors in image measurement of fiducial, tie and control points and ground coordinates of control points, than to DEM errors. Nonstandard configurations of fiducial, tie and control points further impair the accuracy. In addition, certain combinations of point location and ground slope might lead to unacceptably large error on the orthoimage. Numéro de notice : A2003-090 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/0031-868X.t01-1-00001 En ligne : https://doi.org/10.1111/0031-868X.t01-1-00001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22386
in Photogrammetric record > vol 18 n° 101 (March - May 2003) . - pp 41 - 58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-03011 RAB Revue Centre de documentation En réserve L003 Disponible Semiautomated building extraction based on CSG model-image fitting / Yi-Hsing Tseng in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 2 (February /2003)
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Titre : Semiautomated building extraction based on CSG model-image fitting Type de document : Article/Communication Auteurs : Yi-Hsing Tseng, Auteur ; Shuo Wang, Auteur Année de publication : 2003 Article en page(s) : pp 171 - 180 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] détection de contours
[Termes IGN] détection du bâti
[Termes IGN] extraction semi-automatique
[Termes IGN] géomètrie algorithmique
[Termes IGN] image aérienne
[Termes IGN] méthode des moindres carrés
[Termes IGN] point de vérification
[Termes IGN] primitive géométrique
[Termes IGN] solideRésumé : (Auteur) Building extraction based on preestablished models has been recognized as a promising idea for acquiring 3D data for buildings from aerial images. This paper proposes a novel building extraction method developed from the concept of fitting CSG (Constructive Solid Geometry) primitives to aerial images. To be practicable, this method adopts a semiautomatic procedure, carrying out highlevel tasks (building detection, model selection, and attribution) interactively by the operator and performing optimal modelimage fitting automatically with a leastsquares fitting algorithm. Buildings, represented by CSG models, can be reconstructed part by part after fitting each parameterized CSG primitive to the edge pixels of aerial images. Reconstructed building parts can then be combined using CSG Boolean set operators. Consequently, a building is represented by a CSG tree in which each node links two branches of combined parts. This paper demonstrates ten examples of building extraction from aerial photos taken at a scale of 1:5,000 and scanned at a pixel size of 25 1.um. All of the tests were performed in the prototypal system implemented in a CADbased environment cooperated with a number of specially designed programs. The process time for each primitive is about 20 seconds and the successful rate of model-image fitting was about 90 percent. Evaluated with some check points, the fitting accuracy was about 0,3 m horizontally and 1 m vertically. The test results are encouraging and promote the theory of modelbased building extraction. Numéro de notice : A2003-012 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.69.2.171 En ligne : https://doi.org/10.14358/PERS.69.2.171 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22310
in Photogrammetric Engineering & Remote Sensing, PERS > vol 69 n° 2 (February /2003) . - pp 171 - 180[article]Error tracking in Ikonos geometric processing using a 3D parametric model / Thierry Toutin in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 1 (January 2003)
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Titre : Error tracking in Ikonos geometric processing using a 3D parametric model Type de document : Article/Communication Auteurs : Thierry Toutin , Auteur Année de publication : 2003 Article en page(s) : pp 43 - 51 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] classificateur paramétrique
[Termes IGN] compensation par faisceaux
[Termes IGN] correction géométrique
[Termes IGN] données localisées 3D
[Termes IGN] image Ikonos
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] orthorectification
[Termes IGN] point d'appui
[Termes IGN] point de vérification
[Termes IGN] précision métrique
[Termes IGN] propagation d'erreurRésumé : (Auteur) Thirteen panchromatic (Pan) and multiband (XS) Ikonos Geoproduct images over seven study sites with various environments and terrain were tested using different cartographic data and accuracies with a 3D parametric model developed at the Canada Centre for Remote Sensing, Natural Resources Canada. The objectives of this study were to define the relationship between the final accuracy and the number and accuracy of input data, to track error propagation during the full geometric correction process (bundle adjustment and orthorectification), and to advise on the applicability of the model in operational environments.
When ground control points (GCPs) have an accuracy poorer than 3 m, 20 GGPs over the entire image are a good compromise to obtain a 3- to 4-m accuracy in the bundle adjustment. When GCP accuracy is better than 1 m, ten GCPs are enough to decrease the bundle adjustment error of either panchromatic or multiband images to 2 to 3 m. Because GGP residuals reflect the input data errors (map and/or plotting), these errors did not propagate through the 3D parametric model, and the internal accuracy of the geometric model is thus better (around a pixel or less).
Quantitative and qualitative evaluations of orthoimages were thus performed with either independent check points or overlaid digital vector files. Generally, the measured errors confirmed the predicted errors or were even slightly better, and a 2- to 4-m positioning accuracy was achieved for the orthoimages depending upon the elevation accuracy (DEM and grid spacing). To achieve a better final positioning accuracy, such as 1 m, a DEM with an accuracy of 1 to 2 m and with a fine grid spacing is required, in addition to welldefined GCPs with an accuracy of 1 m.Numéro de notice : A2003-001 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.69.1.43 En ligne : https://doi.org/10.14358/PERS.69.1.43 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22299
in Photogrammetric Engineering & Remote Sensing, PERS > vol 69 n° 1 (January 2003) . - pp 43 - 51[article]
Titre : Geometrical performances of the VEGETATION products Type de document : Article/Communication Auteurs : Sylvia Sylvander, Auteur ; I. Albert-Grousset, Auteur ; P. Henry, Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2003 Conférence : IGARSS 2003, International Geoscience And Remote Sensing Symposium 21/07/2003 25/07/2003 Toulouse France Proceedings IEEE Importance : pp 573 - 575 Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] étalonnage d'instrument
[Termes IGN] image SPOT 4
[Termes IGN] image SPOT 5
[Termes IGN] image SPOT-Végétation
[Termes IGN] point d'appui
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] qualité géométrique (image)
[Termes IGN] spatiotriangulationRésumé : (auteur) VEGETATION data are mainly used for multidate applications, which induces high level geometrical specifications, especially for multitemporal registration. To comply with them, the VEGETATION 1 image location is improved by a systematic use of ground control points. These are provided by a ground control points data base generated through VEGETATION 1 chips using spacetriangulation method. Consequently, since its launch onboard SPOT 4 in March 1998, VEGETATION 1 has showed a very good and stable geometrical performance. VEGETATION 2, launched onboard SPOT 5 in May 2002, completes now VEGETATION 1 for operational production. It is so essential to ensure geometrical continuity between both sensors. On SPOT 5, a stellar sensor provides a very good estimation of satellite attitude, implying a very good absolute image location : it is not necessary to improve VEGETATION 2 images using ground control points. However, it was necessary to perform a fine geometrical calibration of VEGETATION 2 cameras that was realised during the commissioning phase using ground control points of the VEGETATION 1 data base. Today, we can say that VEGETATION 2 geometrical performance is at least as good as VEGETATION 1's and geometrical continuity is guaranteed. The object of this paper is to present VEGETATION 1 geometrical performance and the methods and results of VEGETATION 2 geometrical commissioning phase. Numéro de notice : C2003-053 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/IGARSS.2003.1293846 En ligne : https://doi.org/10.1109/IGARSS.2003.1293846 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102630 Calibration and validation of SAR interferometry for DEM generation / M. Crosetto in ISPRS Journal of photogrammetry and remote sensing, vol 57 n° 3 (December 2002 - January 2003)PermalinkOrthophoto generation using Ikonos imagery and high-resolution DEM: a case study on volcanic hazard monitoring of Nysoros island (Greece) / S. Vassilopoulou in ISPRS Journal of photogrammetry and remote sensing, vol 57 n° 1-2 (November - December 2002)PermalinkRéalisation de spatiocartes dans des zones d'accès difficile / P. De Mayer in Le monde des cartes, n° 173-174 (septembre - décembre 2002)PermalinkExperimental evaluation of positional accuracy estimates from linear network using point- and line-based testing methods / T.G. Van Niel in International journal of geographical information science IJGIS, vol 16 n° 5 (july 2002)PermalinkUpdating solutions of the rational function model using additional control information / Y. Hu in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 7 (July 2002)PermalinkTowards automating the selection of ground control points in Radarsat images using a topographic database and vector-based matching / Isabelle Couloigner in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 5 (Mai 2002)PermalinkThree-dimensional [3D] geopositioning accuracy of Ikonos imagery / Clive Simpson Fraser in Photogrammetric record, vol 17 n° 99 (April - September 2002)PermalinkKonzeption, Entwicklung und Erprobung eines digitalen integrierten flugzeuggetragenen Fernerkundungssystems für Precision Farming (PFIFF) / Görres Grenzdorffer (2002)PermalinkSaisie de la couverture neigeuse de sites avalancheux par des systèmes aéroportés / Julien Vallet (2002)PermalinkAn approach to single image automatic orientation and point determination by using ortho-images and a DTM / J.S. Shan in Photogrammetric record, vol 17 n° 98 (October 2001 - March 2002)PermalinkGeopositioning accuracy of Ikonos imagery: indications from two dimensional transformations / H.B. Hanley in Photogrammetric record, vol 17 n° 98 (October 2001 - March 2002)PermalinkAirborne GPS photogrammetry in low-altitude applications (Part Two) / Peter Kuntu-Mensah in Surveying and land information systems, vol 61 n° 3 (01/09/2001)PermalinkAirborne GPS photogrammetry comes of age (Part One) / Peter Kuntu-Mensah in Surveying and land information systems, vol 61 n° 2 (01/06/2001)PermalinkDigital image georeferencing from a multiple camera system by GPS-INS / M.M. Mostafa in ISPRS Journal of photogrammetry and remote sensing, vol 56 n° 1 (May - June 2001)PermalinkPhoto orientation under unstable conditions: a robust trial and error approach using range ratios / Arie Croitoru in Photogrammetric record, vol 17 n° 97 (April - September 2001)PermalinkGenauigkeitsuntersuchungen zur GPS/INS-Integration in der Aerophotogrammetrie / Michael Cramer (2001)PermalinkVegetation geometrical image quality / Sylvia Sylvander in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 159 (Juillet 2000)PermalinkOrientation of optical airborne and spaceborne images for small and medium scale mapping purposes / Eija Honkavaara (1999)PermalinkPractical influences of geometric and radiometric image quality provided by different digital camera systems / S. Robson in Photogrammetric record, vol 16 n° 92 (October 1998 - March 1999)PermalinkRecalage de données SPOT et SAR en zone de fort relief / L. Merlin (1998)Permalink