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Titre : Detecting water bodies on Radarsat imagery Type de document : Article/Communication Auteurs : G. Kuang, Auteur ; J. Li, Auteur ; Z. He, Auteur Année de publication : 2011 Article en page(s) : pp 15 - 25 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] détection de contours
[Termes IGN] image radar moirée
[Termes IGN] image Radarsat
[Termes IGN] plan d'eau
[Termes IGN] précision des donnéesRésumé : (Auteur) This paper presents a novel geodesic active contour (GAC) model based on an edge detector for rapid detection of water bodies from spaceborne synthetic aperture radar (SAR) imagery with high speckle noise. The original edge indicator function based on gradients is replaced by an edge indicator function based on the ratio of exponentially weighted averages (ROEWA) operator. Thus, the capability of edge detection and the accuracy of locating edges are greatly improved, which makes the model more appropriate for SAR images. In addition, an enhancing term is added to the original model’s energy function in order to boost the strength for the contour’s evolution. An unconditionally stable additive operator splitting (AOS) scheme and a fast algorithm for re-initialization of the level set function are adopted, which not only enhances the model’s stability, but also speeds up the model’s convergence remarkably. The experimental results on simulated and real RADARSAT-1/-2 images show its efficiency and accuracy. Numéro de notice : A2011-537 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.5623/cig2011-005 En ligne : https://cdnsciencepub.com/doi/pdf/10.5623/cig2011-005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31431
in Geomatica > vol 65 n° 1 (March 2011) . - pp 15 - 25[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 035-2011011 RAB Revue Centre de documentation En réserve L003 Disponible It's all about elevation: Radar satellites cover our Earth in 3D / Gertrud Riegler in Geoinformatics, vol 14 n° 2 (01/03/2011)
[article]
Titre : It's all about elevation: Radar satellites cover our Earth in 3D Type de document : Article/Communication Auteurs : Gertrud Riegler, Auteur Année de publication : 2011 Article en page(s) : pp 16 - 14 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] image radar moirée
[Termes IGN] image TanDEM-X
[Termes IGN] image TerraSAR-X
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] MNS TerraSAR & TanDEM-X
[Termes IGN] modèle numérique de terrainRésumé : (Auteur) With the successful launch of the German radar satellite TanDEM-X on june 21st, 2010, a new era of global digital elevation information provision has commenced. Together with TerraSAR-X, TanDEM-X forms a high-precision radar interferometer acquiring the data basis for a global homogeneous Digital Elevation Model of unprecedented quality, accuracy, and coverage. This unique dataset will be available for the entire land surface of the Earth from 2014 onwards. Numéro de notice : A2011-061 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30842
in Geoinformatics > vol 14 n° 2 (01/03/2011) . - pp 16 - 14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-2011021 SL Revue Centre de documentation Revues en salle Disponible Limitless potential of geospatial imagery / P. Mcintosh in Geoinformatics, vol 14 n° 2 (01/03/2011)
[article]
Titre : Limitless potential of geospatial imagery Type de document : Article/Communication Auteurs : P. Mcintosh, Auteur Année de publication : 2011 Article en page(s) : pp 10 - 12 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] défense nationale
[Termes IGN] données localisées
[Termes IGN] image aérienne
[Termes IGN] image optique
[Termes IGN] image radar
[Termes IGN] image spatiale
[Termes IGN] outil d'aide à la décision
[Termes IGN] protection civile
[Termes IGN] risque naturel
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Today, geospatial imagery is a valuable source about the world around us. Its widespread availability provides us with timely and accurate data about virtually anything occurring on the Earth's surface, from natural phenomena and disasters to events caused by human activity, such as military operations. The use of imagery is far reaching, in both private industry and government applications - its value now being additionally enhanced as it becomes an effective source of input to GIS, allowing like never before the ability to verify the validity or quantity of field work, justify investment expenses and aid in decision making. Numéro de notice : A2011-060 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30841
in Geoinformatics > vol 14 n° 2 (01/03/2011) . - pp 10 - 12[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-2011021 SL Revue Centre de documentation Revues en salle Disponible Edge enhancement algorithm based on the wavelet transform for automatic edge detection InSAR images / Mariví Tello Alonso in IEEE Transactions on geoscience and remote sensing, vol 49 n° 1 Tome 1 (January 2011)
[article]
Titre : Edge enhancement algorithm based on the wavelet transform for automatic edge detection InSAR images Type de document : Article/Communication Auteurs : Mariví Tello Alonso, Auteur ; C. Lopez-Martinez, Auteur ; J. Mallorqui, Auteur ; P. Salembier, Auteur Année de publication : 2011 Conférence : IGARSS 2009, International Geoscience And Remote Sensing Symposium 12/07/2009 17/07/2009 Le Cap Afrique du sud Proceedings IEEE Article en page(s) : pp 222 - 235 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] accentuation de contours
[Termes IGN] détection automatique
[Termes IGN] détection de contours
[Termes IGN] image radar moirée
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] trait de côte
[Termes IGN] transformation en ondelettesRésumé : (Auteur) This paper presents a novel technique for automatic edge enhancement and detection in synthetic aperture radar (SAR) images. The characteristics of SAR images justify the importance of an edge enhancement step prior to edge detection. Therefore, this paper presents a robust and unsupervised edge enhancement algorithm based on a combination of wavelet coefficients at different scales. The performance of the method is first tested on simulated images. Then, in order to complete the automatic detection chain, among the different options for the decision stage, the use of geodesic active contour is proposed. The second part of this paper suggests the extraction of the coastline in SAR images as a particular case of edge detection. Hence, after highlighting its practical interest, the technique that is theoretically presented in the first part of this paper is applied to real scenarios. Finally, the chances of its operational capability are assessed. Numéro de notice : A2011-050 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2010.2052814 Date de publication en ligne : 26/07/2010 En ligne : https://doi.org/10.1109/TGRS.2010.2052814 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30831
in IEEE Transactions on geoscience and remote sensing > vol 49 n° 1 Tome 1 (January 2011) . - pp 222 - 235[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2011011A RAB Revue Centre de documentation En réserve L003 Disponible Orthorectification of VHR optical satellite data exploiting the geometric accuracy of TerraSAR-X data / Peter Reinartz in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 1 (January - February 2011)
[article]
Titre : Orthorectification of VHR optical satellite data exploiting the geometric accuracy of TerraSAR-X data Type de document : Article/Communication Auteurs : Peter Reinartz, Auteur ; R. Muller, Auteur ; P. Schwind, Auteur ; et al., Auteur Année de publication : 2011 Article en page(s) : pp 124 - 132 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image mixte
[Termes IGN] appariement d'images
[Termes IGN] erreur moyenne quadratique
[Termes IGN] image ALOS-PRISM
[Termes IGN] image Ikonos
[Termes IGN] image optique
[Termes IGN] image radar
[Termes IGN] image TerraSAR-X
[Termes IGN] méthode robuste
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] orientation du capteur
[Termes IGN] orthorectification
[Termes IGN] point d'appui
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] zone urbaineRésumé : (Auteur) Orthorectification of satellite data is one of the most important pre-processing steps for application oriented evaluations and for image data input into Geographic Information Systems. Although high- and very high-resolution optical data can be rectified without ground control points (GCPs) using an underlying digital elevation model (DEM) to positional root mean square errors (RMSEs) between 3 m and several hundred meters (depending on the satellite), there is still need for ground control with higher precision to reach lower RMSE values for the orthoimages. The very high geometric accuracy of geocoded data of the TerraSAR-X satellite has been shown in several investigations. This is due to the fact that the SAR antenna measures distances which are mainly dependent on the terrain height and the position of the satellite. The latter can be measured with high precision, whereas the satellite attitude need not be known exactly. If the used DEM is of high accuracy, the resulting geocoded SAR data are very precise in their geolocation. This precision can be exploited to improve the orientation knowledge and thereby the geometric accuracy of the rectified optical satellite data. The challenge is to match two kinds of image data, which exhibit very different geometric and radiometric properties. Simple correlation techniques do not work and the goal is to develop a robust method which works even for urban areas, including radar shadows, layover and foreshortening effects. First the optical data have to be rectified with the available interior and exterior orientation data or using rational polynomial coefficients (RPCs). From this approximation, the technique used is the measurement of small identical areas in the optical and radar images by automatic image matching, using a newly developed adapted mutual information procedure followed by an estimation of correction terms for the exterior orientation or the RPC coefficients. The matching areas are selected randomly from a regular grid covering the whole imagery. By adjustment calculations, parameters from falsely matched areas can be eliminated and optimal improvement parameters are found. The original optical data are orthorectified again using the delivered metadata together with these corrections and the available DEM. As proof of method the orthorectified data from IKONOS and ALOS-PRISM sensors are compared with conventional ground control information from high-precision orthoimage maps of the German Cartographic Survey. The results show that this method is robust, even for urban areas. Although the resulting RMSE values are in the order of 2–6 m, the advantage is that this result can be reached even for optical sensors which do not exhibit low RMSE values without using manual GCP measurements. Numéro de notice : A2011-017 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2010.10.003 En ligne : https://doi.org/10.1016/j.isprsjprs.2010.10.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30799
in ISPRS Journal of photogrammetry and remote sensing > vol 66 n° 1 (January - February 2011) . - pp 124 - 132[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2011011 SL Revue Centre de documentation Revues en salle Disponible Physical limitations on detecting tunnels using underground-focusing spotlight synthetic aperture radar / J. Martinez-Lorenzo in IEEE Transactions on geoscience and remote sensing, vol 49 n° 1 Tome 1 (January 2011)PermalinkThe distress alerting satellite system: Taking the search out of search and rescue / D. Affens in GPS world, vol 22 n° 1 (January 2011)PermalinkGeodetically accurate InSAR data processor / H. Zebker in IEEE Transactions on geoscience and remote sensing, vol 48 n° 12 (December 2010)PermalinkGeographic information system (GIS)-aided per-segment scene analysis of multi-temporal spaceborne synthetic aperture radar (SAR) series with application to urban areas / G. Trianni in International Journal of Remote Sensing IJRS, vol 31 n° 22 (November 2010)PermalinkStatus and future of laser scanning, synthetic aperture radar and hyperspectral remote sensing data for forest biomass assessment / B. Koch in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 6 (November - December 2010)PermalinkPersistent scatterer interferometry : potential, limits and initial C- and X-band comparison / M. Crosetto in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 9 (September 2010)PermalinkDamage consequence chain mapping after the Wenchuan Earthquake using remotely sensed data / H. Guo in International Journal of Remote Sensing IJRS, vol 31 n° 13 (July /2010)PermalinkMulti-path PALSAR interferometric observations of the 2008 magnitude 8.0 Wenchuan earthquake / K. Zhang in International Journal of Remote Sensing IJRS, vol 31 n° 13 (July /2010)PermalinkGeneration of three-dimensional deformation maps from InSAR data using spectral diversity techniques / E. Erten in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 4 (July - August 2010)PermalinkMonitoring oil production facilities using radar coherent change detection / D. Holcomb in Geoinformatics, vol 13 n° 5 (01/07/2010)PermalinkRadarsat-2 data: automated high accuracy geometric correction and mosaicking without ground control points / Penggen Cheng in Geoinformatics, vol 13 n° 5 (01/07/2010)PermalinkVertical accuracy of digital elevation model from Shuttle Radar Topographic Mission: a case study / Ashu Sharma in Geocarto international, vol 25 n° 4 (July 2010)PermalinkEvaluation of the RPC model for spaceborne SAR imagery / G. Zhang in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 6 (June 2010)PermalinkEvaluation of Terrasar-X observations for wetland INSAR application / S.H. Hong in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)PermalinkInterferometric microrelief sensing with Terrasar-X: first results / J. Baade in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)PermalinkTerrasar-X SAR processing and products / H. Breit in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)PermalinkFusion d'images optique et radar à haute résolution pour la mise à jour de bases de données cartographiques / Vincent Poulain (2010)PermalinkUtilisation conjointe d'mageries optique et radar haute résolution spatiale pour la cartographie de l'occupation du sol dans un contexte tropical / Mohamed Sebane (2010)PermalinkA matching algorithm for detecting land use changes using case-based reasoning / X. Li in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 11 (November 2009)PermalinkA Wavelet and IHS integration method to fuse high resolution SAR with moderate resolution multispectral images / G. Hong in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 10 (October 2009)PermalinkClassification comparisons between dual-pol, compact polarimetric and quad-pol SAR imagery / T. Ainsworth in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 5 (September - October 2009)PermalinkDiscrimination of agricultural crops in a tropical semi-arid region of Brazil based on L-band polarimetric airborne SAR data / W. Silva in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 5 (September - October 2009)PermalinkInterferometric SAR for characterization of ravines as a function of their density, depth, and surface cover / R.S. Chatterjee in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 5 (September - October 2009)Permalinkvol 64 n° 5 - September - October 2009 - Mapping with SAR: Techniques and applications (Bulletin de ISPRS Journal of photogrammetry and remote sensing) / A. ReigberPermalinkRapid mapping of high resolution SAR scenes / F. Dell'acqua in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 5 (September - October 2009)PermalinkStereo analysis of high-resolution SAR images for building height estimation in cases of orthogonal aspect directions / Uwe Soergel in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 5 (September - October 2009)PermalinkUsing small baseline Interferometric SAR to map nonlinear ground motion: a case study in Northern Tibet / Zhenhong Li in Journal of applied geodesy, vol 3 n° 3 (August 2009)PermalinkAn adaptive thresholding multiple classifiers system for remote sensing image classification / Y. Tzeng in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 6 (June 2009)PermalinkPotentiality of feed-forward neural networks for classifying dark formations to oil spills and look-alikes / Konstantinos Topouzelis in Geocarto international, vol 24 n° 3 (June - July 2009)PermalinkTerraSAR-X and TanDEM-X: Revolution in spaceborne radar / F. Hensler in Bulletin des sciences géographiques, n° 23 (juin 2009)PermalinkObservation des eaux continentales depuis l'espace / Anny Cazenave in Géosciences, n° 9 (avril 2009)PermalinkMapping vegetated wetlands of Alaska using L-band radar satellite imagery / Jane Whitcomb in Canadian journal of remote sensing, vol 35 n° 1 (February 2009)PermalinkForest cover mapping in French Guiana since 1992 using satellite radar imagery / Tuomas Häme (2009)PermalinkRemote sensing of soil salinization / G. Metternicht (2009)PermalinkTerrasar-X1M spaceborne radar / M. Weber in GIM international, vol 23 n° 1 (January 2009)PermalinkThe Sichuan earthquake (3): satellite-based global flood response / F. Koudogbo in GIM international, vol 22 n° 12 (December 2008)PermalinkImproved filtering parameter determination for the Goldstein radar interferogram filter / Z.W. Li in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 6 (November - December 2008)PermalinkThe Sichuan earthquake (2) : space-borne SAR in earthquake response / Y. Shao in GIM international, vol 22 n° 11 (November 2008)PermalinkExtreme wind conditions observed by satellite synthetic aperture radar in the North West Pacific / A. Reppucci in International Journal of Remote Sensing IJRS, vol 29 n° 21 (October 2008)PermalinkA scheme for ship detection in inhomogeneous regions based on segmentation of SAR images / F. Zhang in International Journal of Remote Sensing IJRS, vol 29 n°19-20 (October 2008)Permalinkvol 46 n° 10 Tome 1 - October 2008 - Special issue on the 2007 International Geoscience and Remote Sensing Symposium (IGARSS'07): sensing and understanding our planet, [actes], Barcelona, July 23-27, 2007. Part 1 of two parts (Bulletin de IEEE Transactions on geoscience and remote sensing) / A. CampsPermalinkvol 46 n° 10 Tome 2 - October 2008 - Special issue on the 2007 International Geoscience and Remote Sensing Symposium (IGARSS'07): sensing and understanding our planet, [actes], Barcelona, July 23-27, 2007. Part 2 of two parts (Bulletin de IEEE Transactions on geoscience and remote sensing) / A. CampsPermalinkThe Sichuan earthquake (1): satellite imagery for rapid response / Timo Balz in GIM international, vol 22 n° 10 (October 2008)PermalinkModel investigation about the potential of C-band SAR in herbaceous wetlands flood monitoring / F. Grings in International Journal of Remote Sensing IJRS, vol 29 n° 17-18 (September 2008)PermalinkRéalisation de spatio-cartes géologiques à l'aide de l'imagerie satellitale radar ERS pour une prospection minière efficace en Afrique de l'Ouest : application aux localités de Tortiya et Tienko en Côté d'Ivoire / B.G. Koffi in Photo interprétation, vol 44 n° 2 (Septembre 2008)Permalink