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Recent developments on direct relative orientation / H. Stewenius in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 4 (June - July 2006)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 60 n° 4 (June - July 2006) . - pp 284 - 294 Titre : Recent developments on direct relative orientation Type de document : Article/Communication Auteurs : H. Stewenius, Auteur ; C. Engels, Auteur ; D. Nister, Auteur Année de publication : 2006 Article en page(s) : pp 284 - 294 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] analyse comparative [Termes IGN] Matlab [Termes IGN] matrice [Termes IGN] orientation relative [Termes IGN] transformation polynomiale [Termes IGN] vecteur propre Résumé : (Auteur) This paper presents a novel version of the five-point relative orientation algorithm given in Nister [Nister, D., 2004. An efficient solution to the five-point relative pose problem, IEEE Transactions on Pattern Analysis and Machine Intelligence, 26 (6), 756–770]. The name of the algorithm arises from the fact that it can operate even on the minimal five-point correspondences required for a finite number of solutions to relative orientation. For the minimal five correspondences, the algorithm returns up to 10 real solutions. The algorithm can also operate on many points. Like the previous version of the five-point algorithm, our method can operate correctly even in the face of critical surfaces, including planar and ruled quadric scenes. The paper presents comparisons with other direct methods, including the previously developed five-point method, two different six-point methods, the seven-point method, and the eight-point method. It is shown that the five-point method is superior in most cases among the direct methods. The new version of the algorithm was developed from the perspective of algebraic geometry and is presented in the context of computing a Gröbner basis. The constraints are formulated in terms of polynomial equations in the entries of the fundamental matrix. The polynomial equations generate an algebraic ideal for which a Gröbner basis is computed. The Gröbner basis is used to compute the action matrix for multiplication by a single variable monomial. The eigenvectors of the action matrix give the solutions for all the variables and thereby also relative orientation. Using a Gröbner basis makes the solution clear and easy to explain. Copyright ISPRS Numéro de notice : A2006-282 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2006.03.005 En ligne : https://doi.org/10.1016/j.isprsjprs.2006.03.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28009 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
081-06041	SL	Revue	Centre de documentation	Revues en salle	Disponible

Le symposium de l'ISPRS / Anonyme in Géomatique expert, n° 51 (01/06/2006)

Public [article]  inGéomatique expert > n° 51 (01/06/2006) . - pp 8 - 10 Titre : Le symposium de l'ISPRS Type de document : Article/Communication Auteurs : Anonyme, Auteur Année de publication : 2006 Article en page(s) : pp 8 - 10 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] acquisition d'images [Termes IGN] capteur (télédétection) [Termes IGN] géoréférencement direct [Termes IGN] image radar [Termes IGN] image spectrale [Termes IGN] photogrammétrie spatiale [Termes IGN] positionnement par GPS [Termes IGN] traitement d'image Résumé : (Auteur) L'International Society of Photogrammetry and Remote Sensing tenait un symposium de "mi-course" dans les locaux de l'ENSG à Marne-la-Vallée. L'occasion de faire le point sur les nouvelles techniques en terme d'imagerie spatiale. Numéro de notice : A2006-274 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28001 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
265-06041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

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)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 72 n° 5 (May 2006) . - pp 597 - 604 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 stéréoscopique Résumé : (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 [article]

Uncovering the statistical and spatial characteristics of fine toposcale DEM error / Juha Oksanen in International journal of geographical information science IJGIS, vol 20 n° 4 (april 2006)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 20 n° 4 (april 2006) . - pp 345 - 369 Titre : Uncovering the statistical and spatial characteristics of fine toposcale DEM error Type de document : Article/Communication Auteurs : Juha Oksanen, Auteur ; Tapani Sarjakoski, Auteur Année de publication : 2006 Article en page(s) : pp 345 - 369 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] contour [Termes IGN] données laser [Termes IGN] erreur aléatoire [Termes IGN] erreur systématique [Termes IGN] Finlande [Termes IGN] modèle d'erreur [Termes IGN] modèle numérique de surface [Termes IGN] propagation d'erreur Résumé : (Auteur) The aim of our study was to characterize statistical and spatial details of the errors in a fine toposcale DEM derived by contour data. The fine toposcale DEMs are typically represented in a 5-50 m grid and used in the application scale 1:10000-1:50000. The errors were determined by using high-quality reference data covering the entire study area from an airborne laser scanner. The work was motivated because of the essential role played by the correct characterization of DEM error in error-propagation studies. The results showed that the spatial autocorrelation of the fine toposcale DEM error was the result of a complex combination of random and systematic-like components, and its appropriate modelling by geostatistical methods is problematic because of the small extent of the areas in which the assumption of stationarity is valid. In addition, describing the shape of the DEM error distribution was impossible with a single parameter of dispersion. This was due to a large number of outliers, which suggests that more robust descriptors of the error should be used in addition to conventional error statistics. Numéro de notice : A2006-178 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810500433891 En ligne : https://doi.org/10.1080/13658810500433891 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27905 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-06041	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-06042	RAB	Revue	Centre de documentation	En réserve L003	Disponible

DEM generation using Quickbird stereo data without ground controls, using tie points only / Penggen Cheng in Geoinformatics, vol 9 n° 2 (01/03/2006)

Public [article]  inGeoinformatics > vol 9 n° 2 (01/03/2006) . - pp 36 - 38 Titre : DEM generation using Quickbird stereo data without ground controls, using tie points only Type de document : Article/Communication Auteurs : Penggen Cheng, Auteur ; C. Chaapel, Auteur Année de publication : 2006 Article en page(s) : pp 36 - 38 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] géoréférencement direct [Termes IGN] image Quickbird [Termes IGN] MNS SRTM [Termes IGN] modèle numérique de surface [Termes IGN] modèle stéréoscopique [Termes IGN] OrthoEngine [Termes IGN] point d'appui Résumé : (Auteur) This article examines the extraction of Digital Elevation Models (DEMs) from QuickBird stereo image pairs without the use of ground control points (GCPs). Due to the frequent unavailability of ground control points, a DEM generation method requiring no GCPs would be of significant interest to users of stereo data. The article also explores the refinement of extracted DEMs by applying horizontal shifts based on reference DEMs from the Shuttle Radar Topography Mission (SRTM). Numéro de notice : A2006-107 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27834 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
262-06021	SL	Revue	Centre de documentation	Revues en salle	Disponible

The accuracy of grid digital elevation models linearly constructed from scattered sample data / F. Aguilar in International journal of geographical information science IJGIS, vol 20 n° 2 (february 2006)  

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Image-based modeling for object and human reconstruction / Fabio Remondino (2006)  

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Photogrammetric techniques in civil engineering material testing and structure monitoring / Hans-Gerd Maas in Photogrammetric Engineering & Remote Sensing, PERS, vol 72 n° 1 (January 2006)  

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Reliability of direct georeferencing: An overview of the current approaches and possibilities / Jan Skaloud (2006)    

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Reliability of direct georeferencing: A case study on practical problems and solutions / Klaus Legat (2006)    

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Utilisation conjointe de données image et laser pour la segmentation et la modélisation 3D / Matthieu Deveau (2006) 

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Effects of JPEG2000 compression on automated dsm extraction: evidence from aerial photographs / T.Y. Shih in Photogrammetric record, vol 20 n° 112 (December 2005 - February 2006)  

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Extraction semi-automatique de bâtiments par contours actifs surfaciques : adaptation au contexte Pléiades / P. Cornic in Revue Française de Photogrammétrie et de Télédétection, n° 180 (Décembre 2005)

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Rational function model-based image matching for digital elevation models / H.G. Sohn in Photogrammetric record, vol 20 n° 112 (December 2005 - February 2006)  

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City map to virtual reality: 3D reconstruction models of cities / P. Alkhoven in GIM international, vol 19 n° 10 (October 2005)

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Lidar elevation data for surface hydrologic modeling: resolution and representation issues / C. Barber in Cartography and Geographic Information Science, vol 32 n° 4 (October 2005)  

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3D building modelling with digital map, Lidar data and video image sequences / Y. Zhang in Photogrammetric record, vol 20 n° 111 (September - November 2005)  

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Direct sensor orientation for large scale mapping: potential, problems, solutions / N. Yastikli in Photogrammetric record, vol 20 n° 111 (September - November 2005)  

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Photogrammétrie et archéologie sous-marine profonde : le cas de l'épave étrusque grand Ribaud F [2ème partie] / P. Drap in XYZ, n° 104 (septembre - novembre 2005)

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Automatic 3D object recognition and reconstruction based on neuro-fuzzy modelling / F. Samadzadegan in ISPRS Journal of photogrammetry and remote sensing, vol 59 n° 5 (August - October 2005)  

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New approach to geodata representation with Geokosmos: technology based on airborne Lidar & digital aerial photography / E. Medvedev in Geoinformatics, vol 8 n° 5 (01/08/2005)

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DEM generation and building detection from Lidar data / R. Ma in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 7 (July 2005)  

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A split-and-merge technique for automated reconstruction of roof planes / Kourosh Khoshelham in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 7 (July 2005)  

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Comment reproduire le MNT d'une rivière ensablée ? / B. Federici in Géomatique expert, n° 44 (01/06/2005)

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Photogrammetric and Lidar data registration using linear features / A. Habib in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 6 (June 2005)  

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