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The application of GPS precise point positioning technology in aerial triangulation / Xiuxiao Yuan in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 6 (November - December 2009)
[article]
Titre : The application of GPS precise point positioning technology in aerial triangulation Type de document : Article/Communication Auteurs : Xiuxiao Yuan, Auteur ; Jianhong Fu, Auteur ; Hongxing Sun, Auteur ; Charles K. Toth, Auteur Année de publication : 2009 Article en page(s) : pp 541 - 550 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation numérique
[Termes IGN] analyse comparative
[Termes IGN] compensation par faisceaux
[Termes IGN] erreur aléatoire
[Termes IGN] erreur systématique
[Termes IGN] GPS en mode différentiel
[Termes IGN] positionnement ponctuel précisRésumé : (Auteur) In traditional GPS-supported aerotriangulation, differential GPS (DGPS) positioning technology is used to determine the 3-dimensional coordinates of the perspective centers at exposure time with an accuracy of centimeter to decimeter level. This method can significantly reduce the number of ground control points (GCPs). However, the establishment of GPS reference stations for DGPS positioning is not only labor-intensive and costly, but also increases the implementation difficulty of aerial photography. This paper proposes aerial triangulation supported with GPS precise point positioning (PPP) as a way to avoid the use of the GPS reference stations and simplify the work of aerial photography. Firstly, we present the algorithm for GPS PPP in aerial triangulation applications. Secondly, the error law of the coordinate of perspective centers determined using GPS PPP is analyzed. Thirdly, based on GPS PPP and aerial triangulation software self-developed by the authors, four sets of actual aerial images taken from surveying and mapping projects, different in both terrain and photographic scale, are given as experimental models. The four sets of actual data were taken over a flat region at a scale of 1:2500, a mountainous region at a scale of 1:3000, a high mountainous region at a scale of 1:32000 and an upland region at a scale of 1:60000 respectively. In these experiments, the GPS PPP results were compared with results obtained through DGPS positioning and traditional bundle block adjustment. In this way, the empirical positioning accuracy of GPS PPP in aerial triangulation can be estimated. Finally, the results of bundle block adjustment with airborne GPS controls from GPS PPP are analyzed in detail. The empirical results show that GPS PPP applied in aerial triangulation has a systematic error of half-meter level and a stochastic error within a few decimeters. However, if a suitable adjustment solution is adopted, the systematic error can be eliminated in GPS-supported bundle block adjustment. When four full GCPs are emplaced in the corners of the adjustment block, then the systematic error is compensated using a set of independent unknown parameters for each strip, the final result of the bundle block adjustment with airborne GPS controls from PPP is the same as that of bundle block adjustment with airborne GPS controls from DGPS. Although the accuracy of the former is a little lower than that of traditional bundle block adjustment with dense GCPs, it can still satisfy the accuracy requirement of photogrammetric point determination for topographic mapping at many scales. Numéro de notice : A2009-495 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2009.03.006 En ligne : https://doi.org/10.1016/j.isprsjprs.2009.03.006 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30124
in ISPRS Journal of photogrammetry and remote sensing > vol 64 n° 6 (November - December 2009) . - pp 541 - 550[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-09061 RAB Revue Centre de documentation En réserve L003 Disponible Quality assessment for GPS-supported bundle block adjustment based on aerial digital frame imagery / X. Yuan in Photogrammetric record, vol 24 n° 126 (June - August 2009)
[article]
Titre : Quality assessment for GPS-supported bundle block adjustment based on aerial digital frame imagery Type de document : Article/Communication Auteurs : X. Yuan, Auteur Année de publication : 2009 Article en page(s) : pp 139 - 156 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation numérique
[Termes IGN] bloc d'images
[Termes IGN] compensation par bloc
[Termes IGN] compensation par faisceaux
[Termes IGN] coordonnées géographiques
[Termes IGN] pas d'échantillonnage au sol
[Termes IGN] point d'appui
[Termes IGN] positionnement par GPS
[Termes IGN] qualité géométrique (image)Résumé : (Auteur) Accuracy and reliability are two popular indicators for assessment of the quality of aerial triangulation. This paper explores these quality indicators in relation to GPS-supported bundle block adjustment based on aerial digital frame imagery with GPS navigation data. A set of aerial digital frame imagery, taken over hilly terrain using an SWDC-4 area-array digital camera made in China, was selected and used. These empirical images have superior resolution with a pixel size of 9 um, with a ground sample distance of 10 cm and larger than traditional overlaps (80% longitudinal and 63% lateral). GPS-supported bundle block adjustment was carried out with the WuCAPS high-precision combined bundle block adjustment software package developed by the author. The achieved a posteriori standard deviation (rms errors of observation residuals) of the image coordinates is +3·7 um. The empirical accuracy of the photogrammetric point coordinates reaches +7·1 cm for planimetry and +4·8 cm for elevation on the ground, and the average redundancies (average components of the redundancy for one kind of observation) of the image coordinates and the camera station coordinates determined via GPS are more than 0·74 and 0·69, respectively. These results have shown that GPS-supported aerial triangulation with aerial digital frame imagery provides higher precision and reliability; the practical height accuracy is close to its theoretical possibility; also, it avoids the use of the cross strips and lines of ground height control points on each side of the adjusted block. This not only changes the present situation, in which height accuracy is always lower than the planimetric accuracy in aerial triangulation of aerial film images, but also opens up a new prospect in which the orientation points for models for stereoplotting need not be determined by full field surveying for topographic mapping of reasonably flat terrain at medium and large scales. Therefore, this paper provides an operational basis for a broad range of applications for aerial digital imagery in national basic surveying and mapping, and the rapid production and updating of geographic information in general. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2009-207 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2009.00527.x En ligne : https://doi.org/10.1111/j.1477-9730.2009.00527.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29837
in Photogrammetric record > vol 24 n° 126 (June - August 2009) . - pp 139 - 156[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-09021 RAB Revue Centre de documentation En réserve L003 Disponible Testing the stereoscopic precision of a large-format digital camera / Benjamin Arias in Photogrammetric record, vol 24 n° 126 (June - August 2009)
[article]
Titre : Testing the stereoscopic precision of a large-format digital camera Type de document : Article/Communication Auteurs : Benjamin Arias, Auteur ; J. Gomez-Lahoz, Auteur Année de publication : 2009 Article en page(s) : pp 157 - 170 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] analyse comparative
[Termes IGN] caméra numérique
[Termes IGN] chambre à grand format
[Termes IGN] erreur systématique
[Termes IGN] image aérienne
[Termes IGN] précision stéréoscopique
[Termes IGN] stéréoscopieRésumé : (Auteur) The use of large-format digital cameras in aerial photogrammetry is leading to great improvements in photogrammetric production. Since they were first introduced about 10 years ago, the technological community has been testing and investigating the conditions under which this major change can be consolidated. But a certain (and understandable) bias may be noticed in the efforts that developers, researchers and clients are undertaking. Almost all of the efforts aim at checking the quality of automated measurements and very little attention has been directed to stereoscopic measurements by human operators, which, nevertheless, still represent an important task that needs to be carried out in the production chain. This paper presents the results from a number of tests (13 operators from a variety of enterprises) performed to check the stereoscopic precision of Vexcel UltraCamD camera images compared with Leica RC30 film images. The main conclusion to be drawn from the empirical data is that stereoscopic precision does not depend on the type of camera. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2009-208 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2009.00530.x En ligne : https://doi.org/10.1111/j.1477-9730.2009.00530.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29838
in Photogrammetric record > vol 24 n° 126 (June - August 2009) . - pp 157 - 170[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-09021 RAB Revue Centre de documentation En réserve L003 Disponible A three-dimensional Douglas-Peucker algorithm and its application to automated generalization of DEMs / Fei Lifan in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)
[article]
Titre : A three-dimensional Douglas-Peucker algorithm and its application to automated generalization of DEMs Type de document : Article/Communication Auteurs : Fei Lifan, Auteur ; Jianhua He, Auteur Année de publication : 2009 Article en page(s) : pp 703 - 718 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] algorithme de Douglas-Peucker
[Termes IGN] données localisées 3D
[Termes IGN] généralisation automatique de données
[Termes IGN] généralisation de MNT
[Termes IGN] modèle numérique de surface
[Termes IGN] quadrillage
[Termes IGN] quantité discrèteRésumé : (Auteur) This article reviews the formation of the 3-D Douglas-Peucker algorithm on the basis of analyzing the nature of the 2-D algorithm and further studies the application of the 3-D method to the automated global generalization of digital elevation model (DEM). Compared to the general 3-D Douglas-Peucker algorithm put forward by the authors in the previous publication, further improvements and expansion of the algorithm have been included in this article, namely, (1) for randomly distributed points, 'loneliness index' of the current point has been taken as the dynamic weight factor of the point-plane distance, so as to improve the selection of the feature points; (2) aiming at the mass volume of the regular square grids, which forms the majority of the DEM data; three measures have been suggested in this article for the improvement of the efficiency of the automated generalization. Experiments have proven that these measures can greatly heighten the efficiency of the DEM generalization with satisfactory results and have offered us the practical possibility of on-the-fly global generalization of DEM with a huge volume of data. Copyright Taylor & Francis Numéro de notice : A2009-314 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810701703001 En ligne : https://doi.org/10.1080/13658810701703001 Format de la ressource électronique : u Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29944
in International journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 703 - 718[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-09041 RAB Revue Centre de documentation En réserve L003 Disponible 079-09042 RAB Revue Centre de documentation En réserve L003 Disponible Semi-automatic process for hybrid DTM Generalization based on structural elements multi-analysis / M. Martin in Cartographic journal (the), vol 46 n° 2 (May 2009)
[article]
Titre : Semi-automatic process for hybrid DTM Generalization based on structural elements multi-analysis Type de document : Article/Communication Auteurs : M. Martin, Auteur ; Jorge Rodriguez, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 146 - 154 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] cartographie et localisation simultanées
[Termes IGN] données massives
[Termes IGN] données multiéchelles
[Termes IGN] généralisation automatique de données
[Termes IGN] généralisation de MNT
[Termes IGN] levé à grande échelle
[Termes IGN] modèle numérique de terrain
[Termes IGN] photogrammétrie numériqueRésumé : (Auteur) The generalization of digital terrain models (DTMs) is a tool of great potential for simultaneous cartographic and photogrammetry generation processes at different scales, the main object of which is to feed different geographic information systems (GIS). These GIS enable multi-scale analysis and visualization through different data bases. This research proposes a semi-automatic DTM generalization process conditioned by a series of predefined parameters resulting in the generation of hybrid DTMs at different scales starting from a single cloud of points obtained through large-scale massive data acquisition processes. The generalization results obtained, applied on different areas of different relief, offer specific application ranks for each parameter with great precision, in contrast with DTMs obtained directly in each scale. Numéro de notice : A2009-265 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/000870409X459905 En ligne : https://doi.org/10.1179/000870409X459905 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29895
in Cartographic journal (the) > vol 46 n° 2 (May 2009) . - pp 146 - 154[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-09021 RAB Revue Centre de documentation En réserve L003 Disponible An adaptive approach to topographic feature extraction from Digital Terrain Models / Y. Song in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 3 (March 2009)PermalinkA graph cut optimization guided by 3D-features for surface height recovery / Nesrine Chehata in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 2 (March - April 2009)PermalinkRole of tie points in integrated sensor orientation for photogrammetric map compilation / Kourosh Khoshelham in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 3 (March 2009)PermalinkA radiometric aerial triangulation for the equalization of digital aerial Images and orthoimages / Laure Chandelier in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 2 (February 2009)PermalinkPermalinkCMRT09 Object extraction for 3D city models, road databases and traffic monitoring-concepts, algorithms and evaluation / Uwe Stilla (2009)PermalinkDEM generation using a digital large format frame camera / Joachim Höhle in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 1 (January 2009)PermalinkDigital photogrammetry / W. Linder (2009)PermalinkPermalinkErrors within the inverse distance weighted (IDW) interpolation procedure / G. Achilleos in Geocarto international, vol 23 n° 6 (December 2008 - January 2009)PermalinkLine features between object space and image space / Jen-Jer Jaw in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 12 (December 2008)PermalinkPhotogrammétrie et vision par ordinateur / Mahzad Kalantari in XYZ, n° 117 (décembre 2008 - février 2009)PermalinkLa sémantique de scènes 3D : une approche sémantique pour l'adaptation et la réutilisation de scènes 3D / I. 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