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A flexible mathematical method for calibration in digital aerial photogrammetry / Rongfu Tang in Photogrammetric Engineering & Remote Sensing, PERS, vol 78 n° 10 (October 2012)
[article]
Titre : A flexible mathematical method for calibration in digital aerial photogrammetry Type de document : Article/Communication Auteurs : Rongfu Tang, Auteur ; Dieter Fritsch, Auteur ; Michael Cramer, Auteur ; W. Schneider, Auteur Année de publication : 2012 Article en page(s) : pp 1069 - 1077 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] auto-étalonnage
[Termes IGN] caméra numérique
[Termes IGN] chambre DTC
[Termes IGN] élément d'orientation interne
[Termes IGN] étalonnage de chambre métrique
[Termes IGN] photogrammétrie aérienne
[Termes IGN] polynôme de Legendre
[Termes IGN] test de performanceRésumé : (Auteur) Self-calibration plays a significant role in the automatic interior/exterior orientation of camera systems. This paper presents a new family of self-calibration additional parameters (aps) for digital airborne camera calibration. Photogrammetric self-calibration can (to a very large extent) be considered as a function approximation problem in mathematics. Based on the rigorous approximation theory, a new family of so-called Legendre self-calibration APs is developed from the orthogonal Legendre Polynomials. An approach is suggested to assess the full potential of in-situ camera calibration. The performance of Legendre aps is investigated in many field tests on the DMC, UltracamX, UltracamXp and DigiCAM camera systems. The external accuracy in the tests can reach 0.2 GSD and 0.4 GSD in horizontal and vertical dimensions, respectively. The posterior standard deviation estimation of image measurements is approx. 0.12 pixel or even less. The advantages of Legendre aps are illustrated over the conventional counterparts. From both the theoretical and practical views, Legendre aps are orthogonal, rigorous, flexible, and effective for calibrating frame-format airborne cameras. Numéro de notice : A2012-486 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.78.10.1069 En ligne : https://doi.org/10.14358/PERS.78.10.1069 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31932
in Photogrammetric Engineering & Remote Sensing, PERS > vol 78 n° 10 (October 2012) . - pp 1069 - 1077[article]Coherence evaluation of TanDEM-X interferometric data / M. Martone in ISPRS Journal of photogrammetry and remote sensing, vol 73 (September 2012)
[article]
Titre : Coherence evaluation of TanDEM-X interferometric data Type de document : Article/Communication Auteurs : M. Martone, Auteur ; B. Braütigam, Auteur ; P. Rizzoli, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 21 - 29 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] analyse de données
[Termes IGN] cohérence des données
[Termes IGN] image TanDEM-X
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] modèle numérique de surface
[Termes IGN] test de performanceRésumé : (Auteur) The TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) mission comprises two nearly identical satellites: TerraSAR-X (TSX, launched in 2007), and TanDEM-X (TDX, launched in June 2010). The primary objective of the mission is to generate a worldwide and consistent digital elevation model (DEM) with an unprecedented accuracy. During the first 3 months after its launch, the TDX satellite was tested and calibrated in monostatic configuration with both satellites flying in 20 km along-track distance, and it was proven that the system and acquisition performance is almost identical to TSX. Both satellites were then brought into close formation of a few hundred meters distance to begin the bistatic commissioning phase. Since then, TSX and TDX have acted as a large single-pass radar interferometer, which overcomes the limitations imposed by repeat-pass interferometry and allow the acquisition of highly accurate cross- and along-track interferograms. In December 2010, TanDEM-X began with operational global acquisition: bistatic and monostatic SAR images are simultaneously acquired in stripmap mode and processed to interferograms, from which a global DEM is derived. The key parameter in estimating interferometric performance is the coherence, which is deeply evaluated in this paper. The impact of different decorrelation sources as well as the performance stability over time is investigated by means of statistical analyses and dedicated acquisitions on defined test sites, demonstrating the outstanding interferometric capabilities of the TanDEM-X mission. Numéro de notice : A2012-311 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.06.006 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.06.006 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31757
in ISPRS Journal of photogrammetry and remote sensing > vol 73 (September 2012) . - pp 21 - 29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2012071 SL Revue Centre de documentation Revues en salle Disponible Capturing sail shape in a wind tunnel environment / M. Smith in Photogrammetric record, vol 27 n° 138 (June - August 2012)
[article]
Titre : Capturing sail shape in a wind tunnel environment Type de document : Article/Communication Auteurs : M. Smith, Auteur ; J. Paton, Auteur ; H. Morvan, Auteur ; N. Korras, Auteur Année de publication : 2012 Article en page(s) : pp 195 - 209 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] étalonnage de chambre métrique
[Termes IGN] modèle numérique de surface
[Termes IGN] photogrammétrie terrestre
[Termes IGN] stéréophotogrammétrie
[Termes IGN] test de performanceRésumé : (Auteur) Validation is an important part of computer-based numerical modelling and can be very difficult to achieve. Comparisons with results from practical trials are often used; in this research, photogrammetry has proved to be an excellent method of creating a benchmark model from experimental results against which the computer generated numerical model can be compared. The wind tunnel experimental environment is challenging with practical limitations imposed by space and airflow capabilities. There are few documented cases where stereo-photogrammetry has been used in wind tunnel sail modelling and the results from this research have shown it has played a prominent role in validating an innovative method of modelling fluid–structure interaction. This paper presents the photogrammetric work undertaken to validate a fluid–structure interaction (FSI) solution by measuring the shape of a close reaching asymmetric spinnaker in a wind tunnel at The University of Nottingham. There is particular focus on the data capture in the wind tunnel and the photogrammetric analysis. Numéro de notice : A2012-306 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2012.00684.x Date de publication en ligne : 20/06/2012 En ligne : https://doi.org/10.1111/j.1477-9730.2012.00684.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31752
in Photogrammetric record > vol 27 n° 138 (June - August 2012) . - pp 195 - 209[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-2012021 RAB Revue Centre de documentation En réserve L003 Disponible A comparison between WCS and OPeNDAP for making model results and data products available through the Internet / F. Baart in Transactions in GIS, vol 16 n° 2 (April 2012)
[article]
Titre : A comparison between WCS and OPeNDAP for making model results and data products available through the Internet Type de document : Article/Communication Auteurs : F. Baart, Auteur ; G. De Boer, Auteur ; W. De Haas, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 249 - 265 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] accès aux données localisées
[Termes IGN] analyse comparative
[Termes IGN] cartographie à la volée
[Termes IGN] convivialité
[Termes IGN] Pays-Bas
[Termes IGN] protocole
[Termes IGN] test de performance
[Termes IGN] Web Coverage ServiceRésumé : (Auteur) Numerical models produce output with a large number of variables, grid cells and time steps. The same applies to algorithms that produce gridded datasets from sparse or abundant raw data. Further use of the resulting data products has been challenging, especially for dissemination outside the institute of origin. Due to the gradually increasing size of data products, simply downloading copies of them is becoming impossible. A gradual transition from traditional download methods to web services is therefore observed. Web services allow for on-the-fly access to subsets of data that were hitherto considered as indivisible granules. Here we compare the most mature candidates to serve gridded data through the web: the Open-source Project for a Network Data Access Protocol (OPeNDAP) and Web Coverage Service (WCS) protocols. In the framework of the new Dutch National Model and Data Centre (NMDC.eu) a distributed data storage has been created by coupling OPeNDAP servers. A WCS service layer is provided for the same data. This allows us to compare OPeNDAP and WCS. Using several use cases, we compare the usability, performance and features of the two protocols. Numéro de notice : A2012-163 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01312.x Date de publication en ligne : 13/04/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01312.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31610
in Transactions in GIS > vol 16 n° 2 (April 2012) . - pp 249 - 265[article]Ein modulares Simulationskonzept zur Evaluierung von Positionssensoren sowie Filter- und Regelalgorithmen am Beispiel des automatisierten Strassenbaus / A. Beetz (2012)
Titre : Ein modulares Simulationskonzept zur Evaluierung von Positionssensoren sowie Filter- und Regelalgorithmen am Beispiel des automatisierten Strassenbaus Titre original : [Une méthode de simulation modulaire pour l'évaluation de détecteurs de position ainsi que d'algorithmes de filtre et de règle avec l'exemple de la construction automatisée de routes] Type de document : Thèse/HDR Auteurs : A. Beetz, Auteur Editeur : Stuttgart : University of Stuttgart Année de publication : 2012 Importance : 175 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-5100-3 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] détecteur
[Termes IGN] engin de génie civil
[Termes IGN] filtre
[Termes IGN] guidage de véhicules
[Termes IGN] positionnement cinématique
[Termes IGN] test de performanceRésumé : (Auteur) In recent years, great progress has been made in the field of automated road construction, so that automated construction machines are already widely used on large highway construction sites. In these machines automated height control of the tools is mainly used. A completely automated control of the position and height of the vehicle and the tool is only realized for slow-moving construction machines such as asphalt pavers and slip form pavers. The design of such systems is usually carried out individually for each machine, for which the combination of sensors, filters and control algorithms is of prime importance. Usually, the design must be effected again for each type of construction machine. Previous simulations for the implementation of the software on the machine computer are usually realized on software side. An intermediate step is missing in which sensor components or filter algorithms can be tested individually in the laboratory without being affected by outside influences such as of the ground or other environmental influences. The development of a three-step approach in this thesis closes this gap by developing an additional hardware-in-the-loop simulator. For the hardware-in-the-loop simulator remote-controlled vehicles in a scale of 1:14 are used which are able to reflect a realistic kinematic behavior. Simulations can be performed due to the interconnection of different sensors, software, and the remote-controlled models. Thereby new sensors and algorithms can be optimized in laboratory with respect to their implementation.
For the realization of the simulator, a geometric description of widely spread kinematic vehicle models is set up. Furthermore, an exemplary geometric description is shown for three characteristic tools of construction machines. These tools are the plate of a bulldozer, the plate of a motor grader and the screed of an asphalt paver. A local sensitivity analysis is carried out on the basis of two of these geometrical tool models, which determines the influence of various sensors on the achievable position accuracy of the tools.
For a better understanding of the terms of systems theory and control engineering, a brief introduction is given to these topics. In this introduction, the focus is laid on controllers used for lateral control of the vehicle models on a predetermined trajectory in the simulator. The controllers used consist of various combinations of the PID controller and are thus based on a non-model based approach. The root mean square (RMS = Root Mean Square) is adopted for the description of the control quality. The RMS is calculated with lateral deviations of the vehicle to a desired trajectory during the lateral control. It will be applied to evaluate the used sensors, the controllers and filter algorithms in the control loop. Before using the controllers in the simulator system, they will be evaluated by means of software simulations.
Three robotic total stations are used for the positioning of the controlled vehicles in the simulator. They will be analyzed as to their achievable accuracy in order to determinate the control quality. In this case also a laser tracker is used as a position reference, so that it is possible to make a separation of the control quality from the accuracy of the measurement.
The vehicles implemented in the simulator are a caterpillar and a truck model. With these remote-controlled models it is possible to investigate a large range of vehicle models found on construction sites. In order to determine the steering parameters for a computer-aided control system, an automated calibration method is presented for these models. The simulator is used for testing the implemented vehicle models and also to compare two variants of Kalman filters with respect to improving the control quality. Within the test series, a control quality of 2-4 mm at a speed range of 10 - 30 cm/s could be achieved.Numéro de notice : 14624 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Thèse étrangère DOI : 10.18419/opus-3887 En ligne : http://doi.org/10.18419/opus-3887 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62674 WebGIS performance tests / H. Dai in GIM international, vol 26 n° 1 (January 2012)PermalinkPixel unmixing in hyperspectral data by means of neural networks / Giorgio Licciardi in IEEE Transactions on geoscience and remote sensing, vol 49 n° 11 Tome 1 (November 2011)PermalinkStrapdown INS/DGPS airborne gravimetry tests in the Gulf of Mexico / X. Li in Journal of geodesy, vol 85 n° 9 (September 2011)PermalinkCalibrating and validating multispectral 3D imaging systems at a permanent test site: case study with an Intergraph DMC / Eija Honkavaara in Photogrammetric record, vol 26 n° 134 (June - August 2011)PermalinkL’information « objective » comme représentation subjective : Une analyse expérimentale des besoins pour un système d’information pour le pastoralisme / G. Leclerc in Revue internationale de géomatique, vol 21 n° 2 (juin - août 2011)PermalinkStructured Light Scanners: Working Principles, Performance and Accuracy / A. Georgopoulos in GIM international, vol 25 n° 2 (February 2011)Permalink2D change detection from satellite imagery: Performance analysis and impact of the spatial resolution of input images / Nicolas Champion (2011)PermalinkDétection de changement 2D à partir d’imagerie satellitaire : Application à la mise à jour des bases de données géographiques / Nicolas Champion (2011)PermalinkAdjustment computation of HASM : a high-accuracy and high speed method / T. Yue in International journal of geographical information science IJGIS, vol 24 n°11-12 (december 2010)PermalinkRecord, Replay, Rewind : Testing GNSS Receivers with Record and Playback Techniques / D. Hall in GPS world, vol 21 n° 10 (October 2010)PermalinkCartographie héliportée avec un système Lidar photogrammétrique portable à la main : expériences pratiques en montagne, analyse des performances et de la phase de calibration / Jacques Vallet in Revue Française de Photogrammétrie et de Télédétection, n° 192 (Septembre 2010)PermalinkDGPF projec t: evaluation of digital photogrammetric aerial-based imaging systems: overview and results from the pilot center / Michael Cramer in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 9 (September 2010)PermalinkUsing clustering methods in geospatial information systems / X. Wang in Geomatica, vol 64 n° 3 (September 2010)PermalinkTesting multi-GNSS equipment: systems, simulators and the production pyramid [part 1] / I. Petrovski in Inside GNSS, vol 5 n° 5 (July - August 2010)PermalinkGALILEO test user receiver: status, key results, performance / A. Van Den Berg in GPS world, vol 21 n° 4 (April 2010)PermalinkDigital camera performance where spatial resolution is determined by the optical component / G.H. Thomson in Photogrammetric record, vol 25 n° 129 (March - May 2010)PermalinkAcoustics & GPS: real-time scoring and classification of munitions / M. Cardoza in Inside GNSS, vol 5 n° 1 (January - February 2010)PermalinkPermalinkOne year in orbit: GIOVE-B E1 CBOC signal quality assessment / M. Sollner in GPS world, vol 20 n° 9 (September 2009)PermalinkThe WAAS L5 signal: an assessment of its behavior and potential end use / H. Rho in GPS world, vol 20 n° 5 (May 2009)PermalinkEvaluation ponctuelle des performances du réseau TERIA / Stéphane Durand in XYZ, n° 118 (mars - mai 2009)PermalinkMulti-band test robotic total stations: Trimble VX, Part 4 / L. Van Der Poel in Geoinformatics, vol 12 n° 1 (01/01/2009)PermalinkPermalinkTrajectory determination and analysis in sports by satellite and inertial navigation / Adrian Wägli (2009)PermalinkMulti-band test robotic total stations: Leica TPS 1200+, part 3 / L. Van Der Poel in Geoinformatics, vol 11 n° 8 (01/12/2008)PermalinkRadiometric calibration and characterization of large-format digital photogrammetric sensors in a test field / Lauri Markelin in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 12 (December 2008)PermalinkMulti-brand test robotic total stations: Sokkia SRX robotic total station, part 2 / N. Rengers in Geoinformatics, vol 11 n° 7 (01/11/2008)PermalinkDevelopment and testing of a generic sensor model for pushbroom satellite imagery / T. Weser in Photogrammetric record, vol 23 n° 123 (September - November 2008)PermalinkMulti-user test robotic total station: TOPCON IS-03 imaging station, part 1 / N. Rengers in Geoinformatics, vol 11 n° 6 (01/09/2008)PermalinkThe view from Chilbolton: in-orbit test results from the second Galileo satellite / G. Gatti in Inside GNSS, vol 3 n° 6 (September 2008)PermalinkTestabilité des services web / S. Salva in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI, vol 13 n° 3 (mai - juin 2008)PermalinkCoarse orientation of terrestrial laser scans in urban environments / Claus Brenner in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 1 (January - February 2008)PermalinkEntwicklung eines Qualitätsmodells für die Generierung von digitalen Gelandemodellen aus airborne Laser scanning / Hans Jürg Luthy (2008)PermalinkEvaluation et amélioration des performances de la chaine MNT P+XS SPOT5 / Jean Figuerola (2008)PermalinkRéalisation d'une interface internet pour la gestion de données urbanistiques de la commune de Frameries / J.R. Octavius (2008)PermalinkGateway to a successful start of Galileo: gate, Galileo test environment / S. Plum in Geoinformatics, vol 10 n° 8 (01/12/2007)PermalinkBidirectional reflectance spectrometry of gravel at the Sjökulla test field / J. Peltoniemi in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 6 (November-December 2007)PermalinkCalibrating survey instruments / Olivier Martin in GIM international, vol 21 n° 8 (August 2007)PermalinkBuilding detection by fusion of airborne laser scanner data and multi-spectral images: performance evaluation and sensitivity analysis / Franz Rottensteiner in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 2 (June 2007)PermalinkGalileo signal experimentation / M. Hollreiser in GPS world, vol 18 n° 5 (May 2007)PermalinkMeet GIOVE-A: Galileo's first test satellite / E. Rooney in GPS world, vol 18 n° 5 (May 2007)PermalinkTime for GIOVE-A: the onboard rubidium clock experiment / J. Hahn in GPS world, vol 18 n° 5 (May 2007)PermalinkNetwork real-time kinematic performance analysis using RTCM 3.0 and the Southern Alberta network / Kyle O'Keefe in Geomatica, vol 61 n° 1 (March 2007)PermalinkÉtude des possibilités de mise en place d'un ensemble interconnecté de serveurs cartographiques et de bases de données géographiques / F. Moraux (2007)PermalinkPerformance analysis of integrated sensor orientation / A. Ip in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 1 (January 2007)Permalink