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Line features between object space and image space / Jen-Jer Jaw in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 12 (December 2008)
[article]
Titre : Line features between object space and image space Type de document : Article/Communication Auteurs : Jen-Jer Jaw, Auteur ; N.h Perny, Auteur Année de publication : 2008 Article en page(s) : pp 1521 - 1528 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] appariement de données localisées
[Termes IGN] colinéarité
[Termes IGN] contrainte géométrique
[Termes IGN] données localisées 2D
[Termes IGN] données localisées 3D
[Termes IGN] espace image
[Termes IGN] espace objet
[Termes IGN] ligne caractéristique
[Termes IGN] objet géographique linéaire
[Termes IGN] traitement d'imageRésumé : (Auteur) In recent years, linear features have been gradually integrated into photogrammetry-related applications to estimate orientation parameters and facilitate object reconstruction, to name just a few. Yet, the correspondence of the conjugate linear features between different spaces or coordinate systems remains crucial to the goal of photogrammetric automation. When establishing exterior orientation of images on the line feature basis, the identifications and measurements of control line features must be involved. In this study, the authors develop an approach for effectively matching line features between object space and image space. The proposed algorithms start from projecting 3D line features into 2D image space employing collinearity equations with approximate orientation parameters. Then, the candidate lines detected from the images are chosen and matched with the 3D line features by imposing, in a sequential manner, geometric constraints that include angle, distance, reference point, and imaging geometry checks. Furthermore, a two-stage matching strategy, where the outcome of the first matching stage by partial 3D line features provides confined matching candidates for the second matching stage, is found effective in lowering the computational load, especially when faced with a great amount of 3D line features. Preliminary tests demonstrate successful, as well as satisfactory, 3D to 2D line feature correspondences using the proposed approach and strategy. Copyright ASPRS Numéro de notice : A2008-524 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.74.12.1521 En ligne : https://doi.org/10.14358/PERS.74.12.1521 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29593
in Photogrammetric Engineering & Remote Sensing, PERS > vol 74 n° 12 (December 2008) . - pp 1521 - 1528[article]Photogrammétrie et vision par ordinateur / Mahzad Kalantari in XYZ, n° 117 (décembre 2008 - février 2009)
[article]
Titre : Photogrammétrie et vision par ordinateur Type de document : Article/Communication Auteurs : Mahzad Kalantari , Auteur ; Mahzad Kalantari , Auteur ; Michel Kasser , Auteur Année de publication : 2008 Article en page(s) : pp 49 - 54 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] matrice
[Termes IGN] orientation relative
[Termes IGN] photogrammétrie
[Termes IGN] stéréoscopie
[Termes IGN] traitement d'image
[Termes IGN] vision par ordinateurRésumé : (Auteur) Une comparaison est effectuée entre les façons employées en photogrammétrie et en vision par ordinateur pour traiter les problèmes liés à l'acquisition de la 3D à partir d'images stéréoscopiques. Le formalisme adopté, assez différent, est présenté, et quelques perspectives d'évolution en sont déduites. Copyright AFT Numéro de notice : A2008-480 Affiliation des auteurs : LGA (2009-2011) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29549
in XYZ > n° 117 (décembre 2008 - février 2009) . - pp 49 - 54[article]Exemplaires(1)
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Photogrammétrie et vision par ordinateur - pdf éditeurAdobe Acrobat PDF Advanced studies in strip pair processing of Cartosat-1 data / P.K. Srivastava in Photogrammetric record, vol 23 n° 123 (September - November 2008)
[article]
Titre : Advanced studies in strip pair processing of Cartosat-1 data Type de document : Article/Communication Auteurs : P.K. Srivastava, Auteur ; T. Srinivasan, Auteur ; Amit Gupta, Auteur ; et al., 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 289 - 304 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] compensation par bloc
[Termes IGN] image Cartosat-1
[Termes IGN] modèle numérique de surface
[Termes IGN] orthoimage
[Termes IGN] point d'appui
[Termes IGN] qualité d'image
[Termes IGN] restauration d'image
[Termes IGN] spatiotriangulation
[Termes IGN] tâche image d'un point
[Termes IGN] variabilitéRésumé : (Auteur) With the launch of the Indian remote sensing satellite Cartosat-1, an along-track stereoscopic imaging mission of the Indian Space Research Organisation (ISRO), new possibilities for operational availability of high-resolution stereo-imagery from space for the remote sensing and cartography user communities have emerged. The high-resolution stereo data beamed from twin cameras on board the Cartosat-1 mission facilitates topographic mapping up to 1:25 000 scale. The primary advantage of the Cartosat-1 mission is seen in the generation of digital elevation models (DEMs) and the production of ortho-images in an operational set-up. This also facilitates 3D terrain visualisation for very large tracts of land. Stereo Strip Triangulation (SST) is a software system developed and perfected at the Space Applications Centre of ISRO for operational generation of secondary control and appropriate DEMs for subsequent use in the generation of ortho-images. This system has been in use for almost 2 years at the National Remote Sensing Agency in Hyderabad, India, and has generated a wealth of data for use in topographic mapping. An initiative to generate a database of seamless, homogeneous DEMs and associated ortho-image tiles at country level has been undertaken by ISRO. This data-set has been named CartoDEM. The Cartosat-1 data processing team has completed the design and testing of software for the generation of the CartoDEM. This software system has undergone detailed evaluation and currently is in the final stage of development of the operational procedures required to make maximum use of the capabilities of the Cartosat-1 sensors. A data dissemination software system is currently under development. As part of the large-scale evaluation exercises to finalise the specifications of CartoDEM, it is established that with the 2·5 m ground resolution, a base-to-height ratio of 0·62 and with capability to register conjugate points in the stereopair to sub-pixel level, DEMs can be generated at 0·3 arc second intervals, with a height accuracy of 3 to 4 m, over tracts of undulating land mass up to 15 000 km2 with the use of 10 to 20 ground control points. The Cartosat-1 data processing and evaluation team regularly monitors the radiometric quality of images. As part of the radiometric characterisation of sensors, the team computed point spread functions (PSFs) for the two cameras of Cartosat-1. Special filters based on the PSFs then work to improve the radiometric quality of the images. Initial results from these exercises show good promise in image restoration based on PSFs for Cartosat-1. This paper presents a summary of activities and exercises related to (i) Stereo Strip Triangulation, (ii) CartoDEM, (iii) image quality improvement using the PSF-based image restoration and (iv) block adjustment exercises using a COTS software package. Also reported are the results of post-launch experiments, study and evaluation of DEMs vis-à-vis ortho-images from Cartosat-1. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-394 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00491.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00491.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29387
in Photogrammetric record > vol 23 n° 123 (September - November 2008) . - pp 289 - 304[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-08031 RAB Revue Centre de documentation En réserve L003 Disponible Analysis of Cartosat-1 images regarding image quality, 3D point measurement and DSM generation / Emmanuel P. Baltsavias in Photogrammetric record, vol 23 n° 123 (September - November 2008)
[article]
Titre : Analysis of Cartosat-1 images regarding image quality, 3D point measurement and DSM generation Type de document : Article/Communication Auteurs : Emmanuel P. Baltsavias, Auteur ; S. Kocaman, Auteur ; K. Wolff, 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 305 - 322 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] correction radiométrique
[Termes IGN] géoréférencement
[Termes IGN] image Cartosat-1
[Termes IGN] modèle numérique de surface
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] point d'appui
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] qualité d'image
[Termes IGN] restauration d'image
[Termes IGN] RomeRésumé : (Auteur) The Institute of Geodesy and Photogrammetry (IGP) at ETH Zurich is participating in the Cartosat-1 evaluation programme, a common initiative of ISRO (India) and ISPRS. Within this programme various test sites with reference data have been established and Cartosat-1 images have been acquired over these sites. Here, investigations at the Rome (Italy) and Maussane-les-Alpilles (France) test sites are reported. First, radiometric problems encountered with the images and pre-processing for their improvement are reported. Examples are shown, together with pre-processing methods that can be employed in order to improve image quality, aimed especially at automatic generation of a digital surface model (DSM) with fewer blunders and more matched points. Then, georeferencing is discussed and the 3D point measurement accuracy that can be achieved is introduced, as well as problems encountered with the rational polynomial coefficients (RPCs). The georeferencing results were produced using various options regarding image pre-processing, the mathematical model used for georeferencing, the number and distribution of ground control points (GCPs) and the GCP image mensuration methods. The best results led to a planimetric and height accuracy (RMSE) of about 1·3 m. Use of an affine transformation after the RPCs, with about six well-distributed GCPs transferred with matching to the second image, is suggested. Finally, the results of automatic DSM generation using the SAT-PP program package developed at the IGP are presented. Various DSMs were generated with 10 m grid spacing. The results were checked visually and were also compared to the reference data provided. In the best case, the accuracy achieved is about 2·7 m without any manual editing, in spite of a 3-year difference between the matching and reference DSMs. Although some aspects regarding image quality and RPC generation could be improved, Cartosat-1 is a useful sensor for mapping and especially for the generation of DSMs. However, owing to its poor absolute geolocation accuracy, Cartosat-1 cannot be used for the generation of a global DSM without GCPs. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-395 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00492.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00492.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29388
in Photogrammetric record > vol 23 n° 123 (September - November 2008) . - pp 305 - 322[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-08031 RAB Revue Centre de documentation En réserve L003 Disponible Development and testing of a generic sensor model for pushbroom satellite imagery / T. Weser in Photogrammetric record, vol 23 n° 123 (September - November 2008)
[article]
Titre : Development and testing of a generic sensor model for pushbroom satellite imagery Type de document : Article/Communication Auteurs : T. Weser, Auteur ; Franz Rottensteiner, Auteur ; J. Willneff, Auteur ; et al., 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 255 - 274 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] Bhoutan
[Termes IGN] capteur en peigne
[Termes IGN] correction géométrique
[Termes IGN] erreur systématique
[Termes IGN] espace image
[Termes IGN] espace objet
[Termes IGN] fonction spline
[Termes IGN] image ALOS-PRISM
[Termes IGN] image Quickbird
[Termes IGN] image SPOT 5
[Termes IGN] Melbourne
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] orientation du capteur
[Termes IGN] test de performanceRésumé : (Auteur) A new generic pushbroom sensor model for high-resolution satellite images in which the orbit and attitudes are modelled by splines is presented. Direct observations for the satellite orbits and attitudes provided in imagery metadata files are used to determine the parameters of these splines. As such observations are contaminated by systematic errors, the new sensor model also incorporates error correction for the orbit and attitude angles. Camera model parameter definitions and file formats generally differ between satellite pushbroom scanners, and the system image- to object-space transformation models are not always compatible with a sensor model based on the familiar perspective model applied in photogrammetry. In order to make the new sensor model applicable to a large number of satellite imaging systems, these vendor-specific definitions are first mapped to the definitions of the new sensor model during data import. This is illustrated for QuickBird, SPOT 5 and ALOS PRISM imagery. The model has been extensively tested using imagery from these same three satellites, over test sites in Melbourne and Bhutan. The tests have shown that the new sensor model can produce georeferencing accuracy of 1 pixel and better when biases in orbit and attitude data are compensated. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-392 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00489.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00489.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29385
in Photogrammetric record > vol 23 n° 123 (September - November 2008) . - pp 255 - 274[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-08031 RAB Revue Centre de documentation En réserve L003 Disponible 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)PermalinkOrientation and self-calibration of ALOS PRISM imagery / S. Kocaman in Photogrammetric record, vol 23 n° 123 (September - November 2008)PermalinkPotential accuracy of image orientation of small satellites: a case study of CHRIS/Proba data / Ahmed Shaker in Photogrammetric record, vol 23 n° 123 (September - November 2008)PermalinkAccuracy assessment of high resolution satellite imagery orientation by leave-one-out method / Maria Antonia Brovelli in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 4 (July - August 2008)PermalinkComplete automation of the relative orientation of a stereopair / Mojca Kosmatin-Fras in Geodetski vestnik, vol 52 n° 2 (june - august 2008)PermalinkFrom 2D to 3D through modelling based on a single image / Diego Gonzalez-Aguilera in Photogrammetric record, vol 23 n° 122 (June - August 2008)PermalinkAdjustability and error propagation for true replacement sensor models / C. Puatanachokchai in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 3 (May - June 2008)PermalinkComparison of nine fusion techniques for very high resolution data / K.G. Nikolapoulos in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 5 (May 2008)PermalinkAutonomous initialisation of exterior orientation parameters using a collinearity search-based solution / G.H. Seedahmed in Photogrammetric record, vol 23 n° 121 (March - May 2008)PermalinkEstimation automatique de l'orientation relative : une approche directe basée sur la résolution de systèmes polynomiaux multivariables / Mahzad Kalantari in Revue Française de Photogrammétrie et de Télédétection, n° 189 (Mars 2008)Permalink