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An approach to the radiometric aerotriangulation of photogrammetric images / David Hernandez-Lopez in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 6 (November 2011)
[article]
Titre : An approach to the radiometric aerotriangulation of photogrammetric images Type de document : Article/Communication Auteurs : David Hernandez-Lopez, Auteur ; B. Felipe-Garcia, Auteur ; J. Gonzalez Piqueras, Auteur ; G. Villa Alcazar, Auteur Année de publication : 2011 Article en page(s) : pp 883 - 893 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] correction radiométrique
[Termes IGN] distribution du coefficient de réflexion bidirectionnelle BRDF
[Termes IGN] image aérienne
[Termes IGN] modèle de transfert radiatif
[Termes IGN] orientation externe
[Termes IGN] orthoimage
[Termes IGN] points homologues
[Termes IGN] qualité radiométrique (image)
[Termes IGN] zone homogèneRésumé : (Auteur) Harnessing the radiometric information provided by photogrammetric flights could be useful in increasing the thematic applications of aerial images. The aim of this paper is to improve relative and absolute homogenization in aerial images by applying atmospheric correction and treatment of bidirectional effects. We propose combining remote sensing methodologies based on radiative transfer models and photogrammetry models, taking into account the three-dimensional geometry of the images (external orientation and Digital Elevation Model). The photogrammetric flight was done with a Z/I Digital Mapping Camera (DMC) with a Ground Sample Distance (GSD) of 45 cm. Spectral field data were acquired by defining radiometric control points in order to apply atmospheric correction models, obtaining calibration parameters from the camera and surface reflectance images. Kernel-driven models were applied to correct the anisotropy caused by the bidirectional reflectance distribution function (BRDF) of surfaces viewed under large observation angles with constant illumination, using the overlapping area between images and the establishment of radiometric tie points. Two case studies were used: 8-bit images with applied Lookup Tables (LUTs) resulting from the conventional photogrammetric workflow for BRDF studies and original 12-bit images (Low Resolution Color, LRC) for the correction of atmospheric and bidirectional effects. The proposed methodology shows promising results in the different phases of the process. The geometric kernel that shows the best performance is the Lidense kernel. The homogenization factor in 8-bit images ranged from 6% to 25% relative to the range of digital numbers (0–255), and from 18% to 35% relative to levels of reflectance (0–100) in the 12-bit images, representing a relative improvement of approximately 1–30%, depending on the band analyzed. Numéro de notice : A2011-474 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2011.09.011 En ligne : https://doi.org/10.1016/j.isprsjprs.2011.09.011 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31368
in ISPRS Journal of photogrammetry and remote sensing > vol 66 n° 6 (November 2011) . - pp 883 - 893[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2011061 SL Revue Centre de documentation Revues en salle Disponible Automatic georeferencing of aerial images using stereo high-resolution satellite images / J. Oh in Photogrammetric Engineering & Remote Sensing, PERS, vol 77 n° 11 (November 2011)
[article]
Titre : Automatic georeferencing of aerial images using stereo high-resolution satellite images Type de document : Article/Communication Auteurs : J. Oh, Auteur ; K. Toth, Auteur ; A. Grejner-Brzezinska, Auteur Année de publication : 2011 Article en page(s) : pp 1157 - 1168 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] compensation par faisceaux
[Termes IGN] erreur de positionnement
[Termes IGN] géoréférencement indirect
[Termes IGN] image à haute résolution
[Termes IGN] image aérienne
[Termes IGN] image Ikonos
[Termes IGN] point d'appui
[Termes IGN] Ransac (algorithme)
[Termes IGN] SIFT (algorithme)
[Termes IGN] valeur aberranteRésumé : (Auteur) For airborne surveys, the GPS/INS system has become the primary source for aerial image georeferencing. However, alternative automated georeferencing is required to serve as a backup for georeferencing when GPS/iNS-based georeferencing is not feasible. High-resolution satellite images (HRSl) have been globally available with better spatial resolution and increasing positional accuracy. Therefore, hrsi has high potential as a ground control source for aerial image georeferencing which usually requires accurate 3D ground control points. Unfortunately, single imagery, which is often used as a reference, contains relief displacement due to objects on the ground introducing positional errors, unless it is not true orthorectified which is costly and time consuming. Therefore, in this study, a stereo HRSI-based automated georeferencing approach is proposed. The use of stereo images can avoid the impact of relief displacement and requires no external height information. The proposed method is based on a multi-scale image matching approach utilizing a combination of SIFT (Scale-Invariant Feature Transform) and ransac (RANdom SAmple Consensus). In the georeferencing step, the bundle adjustment with outlier removal of Baarda's data snooping was utilized. Experimental results for a strip of aerial images with stereo Ikonos images showed its potential as a backup system for automated georeferencing. Numéro de notice : A2011-449 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.77.11.1157 En ligne : https://doi.org/10.14358/PERS.77.11.1157 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31227
in Photogrammetric Engineering & Remote Sensing, PERS > vol 77 n° 11 (November 2011) . - pp 1157 - 1168[article]Pixel 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)
[article]
Titre : Pixel unmixing in hyperspectral data by means of neural networks Type de document : Article/Communication Auteurs : Giorgio Licciardi, Auteur ; F. Del Frate, Auteur Année de publication : 2011 Article en page(s) : pp 4163 - 4172 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] analyse des mélanges spectraux
[Termes IGN] analyse en composantes principales
[Termes IGN] classification par réseau neuronal
[Termes IGN] image AHS
[Termes IGN] image AVIRIS
[Termes IGN] image hyperspectrale
[Termes IGN] image PROBA-CHRIS
[Termes IGN] réduction géométrique
[Termes IGN] test de performanceRésumé : (Auteur) Neural networks (NNs) are recognized as very effective techniques when facing complex retrieval tasks in remote sensing. In this paper, the potential of NNs has been applied in solving the unmixing problem in hyperspectral data. In its complete form, the processing scheme uses an NN architecture consisting of two stages: the first stage reduces the dimension of the input vector, while the second stage performs the mapping from the reduced input vector to the abundance percentages. The dimensionality reduction is performed by the so-called autoassociative NNs, which yield a nonlinear principal component analysis of the data. The evaluation of the whole performance is carried out for different sets of experimental data. The first one is provided by the Airborne Hyperspectral Scanner. The second set consists of images from the Compact High-Resolution Imaging Spectrometer on board the Project for On-Board Autonomy satellite, and it includes multiangle and multitemporal acquisitions. The third set is represented by Airborne Visible/InfraRed Imaging Spectrometer measurements. A quantitative performance analysis has been carried out in terms of effectiveness in the dimensionality reduction phase and in terms of the accuracy in the final estimation. The results obtained, when compared with those produced by appropriate benchmark techniques, show the advantages of this approach. Numéro de notice : A2011-445 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2011.2160950 Date de publication en ligne : 01/08/2011 En ligne : https://doi.org/10.1109/TGRS.2011.2160950 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31223
in IEEE Transactions on geoscience and remote sensing > vol 49 n° 11 Tome 1 (November 2011) . - pp 4163 - 4172[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2011111A RAB Revue Centre de documentation En réserve L003 Disponible Geospatial disaster response during the Haiti earthquake : A case study spanning airborne deployment, data collection, transfer, processing, and dissemination / Jan Van Aardt in Photogrammetric Engineering & Remote Sensing, PERS, vol 77 n° 9 (September 2011)
[article]
Titre : Geospatial disaster response during the Haiti earthquake : A case study spanning airborne deployment, data collection, transfer, processing, and dissemination Type de document : Article/Communication Auteurs : Jan Van Aardt, Auteur ; Donald McKeown, Auteur ; J. Faulring, Auteur ; et al., Auteur Année de publication : 2011 Article en page(s) : pp 943 - 952 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] catastrophe naturelle
[Termes IGN] diffusion de données
[Termes IGN] dommage matériel
[Termes IGN] données localisées
[Termes IGN] données multisources
[Termes IGN] Haïti
[Termes IGN] image aérienne
[Termes IGN] séisme
[Termes IGN] télédétection aérienne
[Termes IGN] traitement de données localiséesRésumé : (Auteur) Immediately following the 12 January 2010 earthquake in Haiti, a disaster response team from Rochester Institute of Technology, ImageCat Inc., and Kucera Internationa!, funded by the Global Facility for Disaster Reduction and Recovery group of the World Bank, collected 0.15 m airborne imagery and two points/m2 lidar data for 650 km2 over a period of seven days. Data were transferred to Rochester, New York for processing at rates that approached 400 Mb/s using Internet2, orthorectified with a 24-hour turnaround, and distributed to response agencies through file or disk transfer. A unique response effort, dubbed the Global Earth Observation - Catastrophe Assessment Network (geo-can) and headed by ImageCat, utilized over 600 experts from 23 different countries to generate rapid turnaround damage assessment products. This paper highlights the airborne data collection, transfer, processing, and product development effort, which arguably has raised the bar in terms of response to large-scale disasters. Numéro de notice : A2011-383 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.77.9.943 En ligne : https://doi.org/10.14358/PERS.77.9.943 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31162
in Photogrammetric Engineering & Remote Sensing, PERS > vol 77 n° 9 (September 2011) . - pp 943 - 952[article]Taiwanese Lidar project / J. Liu in GIM international, vol 25 n° 8 (August 2011)
[article]
Titre : Taiwanese Lidar project Type de document : Article/Communication Auteurs : J. Liu, Auteur ; L. Fei, Auteur Année de publication : 2011 Article en page(s) : pp 23 - 25 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] grande échelle
[Termes IGN] image aérienne
[Termes IGN] orthophotoplan numérique
[Termes IGN] risque naturel
[Termes IGN] Taïwan
[Termes IGN] télémétrie laser aéroportéRésumé : (Auteur) Nearly three-quarters of the territory of Taiwan and 95% of its population are exposed to frequent hazard. In the aftermath of typhoon Morakot that scourged Southern Taiwan on 8th and 9th august 2009, causing the worst flooding in a century, the authorities realized that the country was dreadfully lacking in detailed, accurate and current elevation data, as well as aerial imagery covering the entire territory (36 000 km2). In response, a national mapping program spanning 2010 to 2015 was launched with the aim of simultaneously capturing the entire country airborne Lidar and digital imagery. The authors discuss specifications, status and challenges posed by this large-scale, long-term project. Numéro de notice : A2011-335 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31114
in GIM international > vol 25 n° 8 (August 2011) . - pp 23 - 25[article]Global ortho project / Matteo Luccio in GIM international, vol 25 n° 7 (July 2011)PermalinkMining boundary effects in areally referenced spatial data using the Bayesian information criterion / Sudipto Banerjee in Geoinformatica, vol 15 n° 3 (July 2011)PermalinkComparison of DMC, UltraCam, and ADS40 imagery for benthic habitat and propeller scar mapping / K. Green in Photogrammetric Engineering & Remote Sensing, PERS, vol 77 n° 6 (June 2011)PermalinkMission d'acquisition aérienne lidar pour les applications thématiques en écologie du paysage : le cas des coteaux de Gascogne / Sylvie Ladet in Collection EDYTEM. cahiers de géographie, n° 12 (01/06/2011)PermalinkApproche non supervisée par processus ponctuels marqués pour l'extraction d'objets à partir d'images aériennes et satellitaires / S. Ben Hadj in Revue Française de Photogrammétrie et de Télédétection, n° 194 (Mai 2011)PermalinkUsing horizontal and vertical building structure to constrain indirect sensor orientation / Markus Gerke in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 3 (May - June 2011)PermalinkL'observation en très haute résolution / Laurent Polidori in Géomètre, n° 2080 (avril 2011)PermalinkL'image aérienne proche infrarouge : une information essentielle pour l'étude et la cartographie de la végétation / Jean Guy Boureau in Rendez-vous techniques, n° 31 (hiver 2011)PermalinkLimitless potential of geospatial imagery / P. Mcintosh in Geoinformatics, vol 14 n° 2 (01/03/2011)PermalinkTiltan's automated geo-mapping (AGM) system: A highly integrated airborne image data acquisition & processing system / Gordon Petrie in Geoinformatics, vol 14 n° 2 (01/03/2011)Permalink