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Comparison of 3D physical and empirical models for generating DSMs from stereo HR images / Thierry Toutin in Photogrammetric Engineering & Remote Sensing, PERS, vol 72 n° 5 (May 2006)
[article]
Titre : Comparison of 3D physical and empirical models for generating DSMs from stereo HR images Type de document : Article/Communication Auteurs : Thierry Toutin , Auteur Année de publication : 2006 Article en page(s) : pp 597 - 604 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] analyse comparative
[Termes IGN] compensation par faisceaux
[Termes IGN] fonction linéaire
[Termes IGN] image à haute résolution
[Termes IGN] image Ikonos
[Termes IGN] image Quickbird
[Termes IGN] modèle numérique de surface
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] modèle physique
[Termes IGN] modèle stéréoscopiqueRésumé : (Auteur) This research study addressed and compared 3D physical and empirical models for stereo-processing and the generation of digital surface models (DSMs) from different stereo high-resolution (HR) sensors (Ikonos and QuickBird). The 3D physical model is Toutin's Model (TM) developed at the Canada Centre for Remote Sensing, and the empirical model is the rational function model (RFM). The study also evaluated the conditions of experimentation to appropriately use these 3D models. The first results on stereo-bundle adjustments demonstrated that TM and vendor-supplied RFMs gave similar results with Ikonos as soon as RFM was refined with a shift computed from one GCP. On the other hand, TM gave better results than vendor-supplied RFMs with QuickBird regardless of the polynomial order and the number of GCPs. Due to its relief dependency, QuickBird RFM needed to be refined at least with linear functions computed from at least 6 to 10 GCPs. Some large errors were, however, noted on forward image RFM in column. The DSMs were then generated using an intensity matching approach and compared to 0.2 m accurate lidar elevation data. Because DSMs included the height of land-cover (trees, houses), elevation linear errors with 90 percent confidence level (LE90) were computed and compared for the entire area and three land-cover classes (forests, urban/ residential, bare surfaces). TM and vendor-supplied RFMs with Ikonos, regardless of the method and GCP number, achieved comparable results for all classes, while TM achieved overall better results than vendor-supplied RFMs with QuickBird. All results demonstrated the necessity of refining Ikonos RFM with a shift and one GCP only and QuickBird RFM with lst-order linear functions and 6 to 10 GCPs due to its relief dependency. Numéro de notice : A2006-154 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.72.5.597 En ligne : https://doi.org/10.14358/PERS.72.5.597 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27881
in Photogrammetric Engineering & Remote Sensing, PERS > vol 72 n° 5 (May 2006) . - pp 597 - 604[article]DEM generation from SPOT-5 3-fold along track stereoscopic imagery using autocalibration / W. Kornus in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 3 (May 2006)
[article]
Titre : DEM generation from SPOT-5 3-fold along track stereoscopic imagery using autocalibration Type de document : Article/Communication Auteurs : W. Kornus, Auteur ; R. Alamus, Auteur ; et al., Auteur Année de publication : 2006 Article en page(s) : pp 147 - 159 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] auto-étalonnage
[Termes IGN] compensation par faisceaux
[Termes IGN] erreur moyenne quadratique
[Termes IGN] espace objet
[Termes IGN] image SPOT-HRS
[Termes IGN] modèle numérique de surface
[Termes IGN] modèle numérique de terrain
[Termes IGN] point d'appui
[Termes IGN] précision du positionnement
[Termes IGN] semis de pointsRésumé : (Auteur) This paper describes the derivation and accuracy assessment of Digital Elevation Models (DEM) from 3-fold along-track stereoscopic SPOT-5 imagery. The work was conducted in the scope of the HRS (Haute Resolution Stereoscopique)-Scientifïc Assessment Program, organized by the Centre National d'Etudes Spatiales (CNES) and the International Society of Photogrammetry and Remote Sensing (ISPRS). The orientation of the SPOT-5 image scene is reconstructed by bundle adjustment using ground control points. The functional model is based on correction polynomials and permits autocalibration. At 17 independent check points a RMS-error of 2 m was achieved. DEM are produced in two different ways: The more rigorous way employs an automatic region growing image matching process generating a dense point cloud in image space, transforms it into the object space using the estimated model parameters and converts it into a regular grid DEM. In a second approach the commercial software ISAE and rational functions are applied. The comparison with a digital terrain model (DTM) of superior accuracy yields standard deviations better than 5 m in flat and moderate terrain and better than 10 m in mountainous regions. With ISAE a DEM for the entire image area (approx. 60 x 80 km) is produced with a standard deviation of approximately 8 m. All grid points were generated fully automatically, i.e. the presented standard deviations still include the effect of large differences between the produced DEM and the DTM. Copyright ISPRS Numéro de notice : A2006-226 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2005.12.004 En ligne : https://doi.org/10.1016/j.isprsjprs.2005.12.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27953
in ISPRS Journal of photogrammetry and remote sensing > vol 60 n° 3 (May 2006) . - pp 147 - 159[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-06031 SL Revue Centre de documentation Revues en salle Disponible Generation of DSMs from SPOT-5 in-track HRS and across-track HRG stereo data using spatiotriangulation and autocalibration / Thierry Toutin in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 3 (May 2006)
[article]
Titre : Generation of DSMs from SPOT-5 in-track HRS and across-track HRG stereo data using spatiotriangulation and autocalibration Type de document : Article/Communication Auteurs : Thierry Toutin , Auteur Année de publication : 2006 Article en page(s) : pp 170 - 181 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] analyse comparative
[Termes IGN] auto-étalonnage
[Termes IGN] données lidar
[Termes IGN] erreur de mesure
[Termes IGN] image SPOT-HRG
[Termes IGN] image SPOT-HRS
[Termes IGN] modèle numérique de terrain
[Termes IGN] point d'appui
[Termes IGN] précision du positionnement
[Termes IGN] spatiotriangulation
[Termes IGN] traitement d'imageRésumé : (Auteur) Digital terrain models (DTMs) were extracted from SPOT-5 High Resolution Stereoscopic (HRS, 10m resolution) in-track stereo-images and High Resolution Geometric (HRG, 5m resolution) across-track stereo-images using a three-dimensional (3D) multisensor physical model developed at the Canada Centre for Remote Sensing, Natural Resources Canada, and were evaluated against precise lidar data. Firstly, the stereo HRS and HRG photogrammetric bundle block adjustments using spatiotriangulation and autocalibration were set-up with 10 ground control points and errors of about half-resolution were obtained over 190 and 95 independent checkpoints (ICPs): 6.4m, 6.8m and 5.1m in X, Y and Z axes, and 2.6m, 2.2m and 2.9m in X, Y and Z axes for HRS and HRG, respectively. The internal accuracy are, however, better because these errors include the half-pixel image plotting error and the 3m cartographic error on ICPs. Only the results with HRS were achieved with autocalibration of the lens to correct for the radial distortions due to the largest number of pixels. The DTMs were then generated using an area-based multi-scale image matching method and 3D semi-automatic editing tools, and then compared to lidar data with 0.2m accuracy in elevation. An elevation error with 68% confidence level (LE68) of 5.2m and 6.5m were achieved over the full area for HRS and HRG, respectively. Since the DTM is in fact a digital surface model where the height, or a part, of different land cover classes (trees, houses) is included, the accuracy is depending on the land cover types. Using previous 3D visual classification, different classes (forests, residential areas, bare surfaces) were generated to take into account the height of the surfaces (natural and human-made) in the accuracy evaluation. LE68 values of 3.2m to 6.7m were thus obtained depending on the land cover types. On the other hand, LE68 values of 2.4m and 2.2m were obtained over bare surfaces for HRS and HRG, respectively. These last results are more representative of the real stereo SPOT-5 potential for DTM, compliant with the highest topographic standard. Copyright ISPRS Numéro de notice : A2006-228 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2006.02.003 En ligne : https://doi.org/10.1016/j.isprsjprs.2006.02.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27955
in ISPRS Journal of photogrammetry and remote sensing > vol 60 n° 3 (May 2006) . - pp 170 - 181[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-06031 SL Revue Centre de documentation Revues en salle Disponible Sensor orientation via RPCs / Clive Simpson Fraser in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 3 (May 2006)
[article]
Titre : Sensor orientation via RPCs Type de document : Article/Communication Auteurs : Clive Simpson Fraser, Auteur ; et al., Auteur Année de publication : 2006 Article en page(s) : pp 182 - 194 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie spatiale
[Termes IGN] compensation par bloc
[Termes IGN] image à résolution métrique
[Termes IGN] image Ikonos
[Termes IGN] image Quickbird
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] modèle stéréoscopique
[Termes IGN] orientation du capteur
[Termes IGN] point d'appuiRésumé : (Auteur) The adoption of rational functions as a preferred sensor orientation model for narrow field of view line scanner imagery accompanied the introduction of commercial high-resolution satellite imagery (HRSI) at the turn of the millennium. This paper reviews the developments in ground point determination from HRSI via the model of terrain independent rational polynomial coefficients (RPCs). A brief mathematical background to rational functions is first presented, along with a review of the models for generating RPCs from a rigorous sensor orientation, and for geopositioning via either forward intersection or monoplotting. The concept of RPC block adjustment with compensation for exterior orientation biases is then discussed, as is the means to enhance the original RPCs through a bias correction procedure. The potential for RPC block adjustment to yield sub-pixel geopositioning accuracy from HRSI is illustrated using results from experimental testing with two Quickbird stereo image pairs and three multi-image IKONOS blocks. Finally, error propagation issues in RPC block adjustment of HRSI are considered. Copyright ISPRS Numéro de notice : A2006-229 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2005.11.001 En ligne : https://doi.org/10.1016/j.isprsjprs.2005.11.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27956
in ISPRS Journal of photogrammetry and remote sensing > vol 60 n° 3 (May 2006) . - pp 182 - 194[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-06031 SL Revue Centre de documentation Revues en salle Disponible Activities of calibration and validation for the Kompsat-2 MSC data / D.H. Lee in Revue Française de Photogrammétrie et de Télédétection, n° 181 (Mars 2006)
[article]
Titre : Activities of calibration and validation for the Kompsat-2 MSC data Type de document : Article/Communication Auteurs : D.H. Lee, Auteur ; D.C. Seo, Auteur ; et al., Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 9 - 12 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] élément d'orientation externe
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] étalonnage géométrique
[Termes IGN] étalonnage radiométrique
[Termes IGN] étalonnage spectral
[Termes IGN] image KompsatRésumé : (Auteur) KARI has prepared Calibration and Validation activities for the KOMPSAT-2 (KOrea Multi-Purpose SATellite-2) MSC data that will be launched at the middle of this year. Firstly, we divided the Cal/Val activities of it to four pans, Spatial, Spectral, Radiometric and Geometric, and defined the detailed Cal/Val parameters from them. Secondly, Cal/Val targets have been defined and manufactured for the role of them. Thirdly, we have made the plan and the procedure for the Cal/Val parameters, developed the codes for them, studied more detailed method to do them, and trained the Cal/Val activities using the foreign satellite image data by ourselves. KARI has been now setting up the KOMPSAT-2 LEOP plan with the Cal/Val activities, and probably will finish the EOP Cal/Val activities for the KOMPSAT-2 MSC data by the end of this year. Copyright SFPT Numéro de notice : A2006-613 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS2-17.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28336
in Revue Française de Photogrammétrie et de Télédétection > n° 181 (Mars 2006) . - pp 9 - 12[article]Réservation
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