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Termes IGN > sciences naturelles > physique > traitement d'image > acquisition d'images > modélisation de prise de vue > modélisation géométrique de prise de vue > aérotriangulation
aérotriangulationSynonyme(s)triangulation photogrammetrique triangulation aérienneVoir aussi |
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Experimente zur GPS-gestützten Aerotriangulation unter besonderer Berücksichtigung systematischer Einflüsse / C. Schwiertz (1994)
Titre : Experimente zur GPS-gestützten Aerotriangulation unter besonderer Berücksichtigung systematischer Einflüsse Titre original : [Expériences pour une aérotriangulation basée sur le GPS en considérant particulièrement les influences systématiques] Type de document : Monographie Auteurs : C. Schwiertz, Auteur Editeur : Munich : Universität der Bundeswehr Année de publication : 1994 Collection : Schriftenreihe des Instituts für Geodäsie, ISSN 0173-1009 num. 48 Importance : 190 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] aérotriangulation
[Termes IGN] densité des points
[Termes IGN] GPS en mode cinématique
[Termes IGN] point d'appuiIndex. décimale : 33.40 Photogrammétrie spatiale Résumé : (Auteur) Kinematic GPS-positioning enables the determination of the eccentric positions of exposure during a photo flight. Introducing these positions in an extended bundle adjustment makes it possible to reduce the number of ground control points necessary in classical mode to a minimum. This thesis concentrates on three main topics to reveal various advantages and problems concerning the combined adjustment of photogrammetric data and GPS-positions. In outline, the main results are as follows:
The influence of systematic errors
It is well known that exposure stations tend to compensate errors ill the photogrammetric block. In GPS-controlled blocks the exposure stations are virtually fixed in space. Remaining systematic errors will result in block deformation. The theoretical investigations show that the method of self-calibration becomes more important in this case. On the other hand, a more realistic determination of additional parameters and of the elements of interior orientation would be possible by GPS-supported aerial triangulation.
The datum problem
The datum problem is caused by the fact that GPS-derived positions are related to a global earth fixed coordinate system (e.g. WGS84), but the results of the photogrammetric point determination are preferably wanted ill a regional national reference system. The problem is solved ill GPS-supported aerial triangulation with control points as usual. For the needs of practicality and for the sake of accuracy, it is recommended to use control points and to determine the datum parameters by a combined adjustment. Some examinations using simulated data show that this is possible based only oil one control point. In such a case, additional geometric information -especially height information- would assist in limiting the loss of accuracy.
Mathematical models for GPS-supported aerial triangulation
At the onset of the discussion, different mathematical models for the integration of GPSderived coordinates of the perspective centres ill bundle adjustment are reviewed. These models contain additional parameters for modelling constant and time dependant trends ill GPS-positions.
Furthermore, a new model is presented which allows the formulation of a 'time-dependant' bundle adjustment. The calculation of the camera positions based on the GPS-positions and the recorded times of exposure is integrated in the combined adjustment. In marginal cases, exact knowledge of the times of exposure is no longer necessary.
The main advantage of all these models is that the influence of errors in GPS-data or in time recording can be mitigated during extended bundle adjustment.
The efficiency of GPS-controlled bundle adjustment is demonstrated by the results of two test flights carried out in the year 1988 (Schwabmünchen, photo scale 1:14.000) and 1990 (Hambach, photo scale 1:4.500). The Hambach test flight in particular shows that the positions of exposure eau be determined by kinematic GPS at a tolerance of 2 to 4 cm. Concerning the point determination, it can be established that GPS-supported aerial triangulation with only a few control points is almost as accurate as the conventional method.
Contrary to other test sites, investigated elsewhere, that were located in fairly flat terrain, t lie test area at Hambach shows great differences in height. This caused some problems for height deter mina ion in the CPS-supported mode when only a few control points were used, as there is a high correlation with the focal length computed by self calibration.Numéro de notice : 61670 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=60963 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 61670-01 33.40 Livre Centre de documentation Photogrammétrie - Lasergrammétrie Disponible Multiple-patch matching in the object space for aerotriangulation / Amnon Krupnik (1994)
Titre : Multiple-patch matching in the object space for aerotriangulation Type de document : Monographie Auteurs : Amnon Krupnik, Auteur Editeur : Colombus (Ohio) : Ohio State University Année de publication : 1994 Collection : Department of Geodetic Science and Surveying Reports num. 428 Importance : 94 p. Format : 21 x 27 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation
[Termes IGN] appariement
[Termes IGN] automatisation
[Termes IGN] modèle stéréoscopique
[Termes IGN] point d'appui
[Termes IGN] points homologuesIndex. décimale : 33.30 Photogrammétrie numérique Résumé : (Auteur) Aerotriangulation has been a well- established photogrammetric procedure for years. With recent developments in digital photogrammetry, it is possible to automate the selection and transfer of tie points as well as the measurement. This increases the efficiency, accuracy and reliability of aerotriangulation projects. This work is concerned with finding an automated method for accurately measuring the tie points.
Although accurate matching has been the subject of numerous research studies in the fields of photogrammetry and computer vision, its application for measuring tie points in aerotriangulation adds some new aspects that have not been fully addressed previously. Such aspects are, for example, lack of exterior orientation parameters, very high accuracy requirements, matching only one point at each area and consistent matching of more than two overlapping image patches.
The method proposed in this dissertation is based on matching warped image patches, or matching in the object space. The warping procedure requires the knowledge of the object surface around each prospective point. The surface is reconstructed by a hierarchical, iterative approach. Both the surface and the set of orientation parameters of all the photographs in the block are improved throughout the iterative procedure.
Experiments were performed to demonstrate the feasibility of the proposed method and to study its effects. The results show that where man-made objects exist, matching warped images outperforms the traditional image space matching techniques. The accuracy of the results is comparable to manual measurements even when relatively low resolution images are used.Numéro de notice : 12127 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54554 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 12127-01 33.30 Livre Centre de documentation Photogrammétrie - Lasergrammétrie Disponible Perspectives de la photogrammétrie numérique dans une agence / Olivier Jamet (06/09/1993)
Titre : Perspectives de la photogrammétrie numérique dans une agence Type de document : Article/Communication Auteurs : Olivier Jamet , Auteur Editeur : Paris : Institut Géographique National - IGN (1940-2007) Année de publication : 06/09/1993 Conférence : Euroconference GIS 1993, Algorithms for constructing quadtree surface maps 06/09/1993 09/09/1993 Roussillon France Importance : 3 p. Langues : Français (fre) Descripteur : [Vedettes matières IGN] Photogrammétrie
[Termes IGN] aérotriangulation
[Termes IGN] base de données topographiques
[Termes IGN] photogrammétrie numérique
[Termes IGN] restitution numériqueNuméro de notice : C1993-001 Affiliation des auteurs : IGN (1940-2011) Thématique : IMAGERIE Nature : Communication Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65529 Kinematic GPS in aerotriangulation in Finland / A. Hogholen (1993)
Titre : Kinematic GPS in aerotriangulation in Finland Type de document : Rapport Auteurs : A. Hogholen, Auteur Editeur : Helsinki : Finnish Geodetic Institute FGI Année de publication : 1993 Collection : Reports of the Finnish Geodetic Institute num. 93-5 Importance : 15 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-951-711-161-4 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] aérotriangulation
[Termes IGN] capteur aérien
[Termes IGN] chambre métrique (prise de vues argentique)
[Termes IGN] Finlande
[Termes IGN] GPS en mode cinématique
[Termes IGN] GPS-INS
[Termes IGN] instrument embarquéIndex. décimale : 30.81 Applications positionnement de chambres métriques GPS-INS Numéro de notice : 61703 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=60973 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 61703-02 30.81 Livre Centre de documentation Géodésie Disponible 61703-01 30.81 Livre Centre de documentation Géodésie Disponible Map making today / International cartographic association = association cartographique internationale (1993)Réservation
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Code-barres Cote Support Localisation Section Disponibilité 61166-01 CG1993 Livre Centre de documentation En réserve M-103 Disponible Minutes of the 83rd Meeting of the Steering Committee of the OEEPE, Volume 1. Minutes / Organisation européenne d'études photogrammétriques expériementales (1993)PermalinkMinutes of the 83rd Meeting of the Steering Committee of the OEEPE, Volume 2. Appendices, 1ère partie / Organisation européenne d'études photogrammétriques expériementales (1993)PermalinkMinutes of the 83rd Meeting of the Steering Committee of the OEEPE, Volume 3. Appendices, 2ème partie / Organisation européenne d'études photogrammétriques expériementales (1993)PermalinkPhotogrammetry, Volume 1. Fundamentals and standard processes / Karl Kraus (1993)PermalinkCounting the errors: presentation of aerotriangulation residuals for easy evaluation / G. Salsig in Photogrammetric Engineering & Remote Sensing, PERS, vol 56 n° 5 (may 1990)PermalinkThe use of onboard sensor data in aerial triangulation: GPS, stratoscope and laser measurements / Claude Million in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 118 (Avril 1990)PermalinkEstimation sans biais des variances des différents groupes d'observations dans une compensation hétérogène / Namik Kopliku (1990)PermalinkIntroduction aux méthodes photogrammétriques [Version 1.1] / Stéphane Rasse (1990)PermalinkKinematische Positionsbestimmung für die Aerotriangulation mit dem NAVSTAR Global Positioning System / P. Friess (1990)PermalinkConsiderations in the implementation of aerotriangulation with GPS derived exposure station positions / Raymond J. Hintz in Photogrammetric Engineering & Remote Sensing, PERS, vol 55 n° 12 (december 1989)Permalink