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Improved nonsubsampled contourlet transform for multi-sensor image registration / R. Wang in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 1 (January 2013)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 79 n° 1 (January 2013) . - pp 51 - 66 Titre : Improved nonsubsampled contourlet transform for multi-sensor image registration Type de document : Article/Communication Auteurs : R. Wang, Auteur ; J. Ma, Auteur ; H. Huang, Auteur ; Wei Shi, Auteur Année de publication : 2013 Article en page(s) : pp 51 - 66 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] appariement de lignes [Termes IGN] appariement de points [Termes IGN] détection de contours [Termes IGN] image SPOT 5 [Termes IGN] image Terra-ASTER [Termes IGN] similitude [Termes IGN] superposition d'images [Termes IGN] transformation Résumé : (Auteur) Homologous feature point extraction is a key problem in the multi-sensor image registration. In this paper, a new feature point extraction method using nonsubsampled contourlet transform (NSCT) and an adaptive shrink operator (ASO_NSCT) for multi-sensor image registration is proposed. Moreover, this proposed feature matching is different from the traditional feature matching strategies and is performed using a similarity measure computed from neighborhood circles in low-frequency bands. Then, a number of reliable matched couples with even distributions are obtained, which assures the accuracy of the registration. Applications of the proposed algorithm to different optical images as well as optical and synthetic aperture radar images show that, in each case, a large number of accurate matched couples could be identified. Additionally, the RMSE patterns are analyzed and comparisons of the parameters are carried out between the registration models and the actual ground structures, which further demonstrates the effectiveness of the proposed algorithm. Numéro de notice : A2013-005 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.79.1.51 En ligne : https://doi.org/10.14358/PERS.79.1.51 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32143 [article]

Automatic generation of 2.5D terrain models without occluding routes of interest / Hao Deng in Photogrammetric Engineering & Remote Sensing, PERS, vol 78 n° 11 (November 2012)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 78 n° 11 (November 2012) . - pp 1175 - 1185 Titre : Automatic generation of 2.5D terrain models without occluding routes of interest Type de document : Article/Communication Auteurs : Hao Deng, Auteur ; L. Zhang, Auteur ; J. Ma, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 1175 - 1185 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] données localisées 2,5D [Termes IGN] modèle numérique de terrain [Termes IGN] montagne [Termes IGN] réseau routier [Termes IGN] visibilité Résumé : (Auteur) When a car drives in mountainous regions, the views based on conventional perspective projection often suffer from features of interest being occluded. We propose a method for generating disocclusion views in mountainous regions. The terrain is segmented to build a potential set of occluders; and then an optimized viewpoint is determined, and elevations are rearranged. To obtain a smooth deformed terrain, a smooth displacement function is introduced to deform the level-of-detail terrain models. Compared with previous methods, the merit of this study lies in automatically generating disocclusion views with temporal coherence while keeping the details of the deformed terrain the same as the original terrain. Experiments performed on the 4098 pixel x 4098 pixel mountainous terrain landscape prove that the disocclusion views can achieve 42 to 58 frames/second. Moreover, the shapes of the features of interest on the driving route without occlusion and the spatial configuration of geographical landmarks in its neighborhood can be easily recognized. Numéro de notice : A2012-585 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.78.11.1175 En ligne : https://doi.org/10.14358/PERS.78.11.1175 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32031 [article]

Mapping impervious surfaces from superresolution enhanced CHRIS/Proba imagery using multiple endmember unmixing / Luca Demarchi in ISPRS Journal of photogrammetry and remote sensing, vol 72 (August 2012)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 72 (August 2012) . - pp 99 - 112 Titre : Mapping impervious surfaces from superresolution enhanced CHRIS/Proba imagery using multiple endmember unmixing Type de document : Article/Communication Auteurs : Luca Demarchi, Auteur ; Jonathan Cheung-Wai Chan, Auteur ; J. Ma, Auteur ; Frank Canters, Auteur Année de publication : 2012 Article en page(s) : pp 99 - 112 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] analyse de mélange spectral d’extrémités multiples [Termes IGN] analyse des mélanges spectraux [Termes IGN] image à ultra haute résolution [Termes IGN] image PROBA-CHRIS [Termes IGN] occupation du sol [Termes IGN] satellite agile [Termes IGN] surface imperméable [Termes IGN] zone urbaine Résumé : (Auteur) In this paper, the potential of superresolution (SR) image reconstruction methods for sub-pixel land-cover mapping in dense urban areas is studied. A multiple endmember approach (MESMA) is used for unmixing both original hyperspectral CHRIS/Proba and SR enhanced CHRIS/Proba data. Validation based on high resolution orthophotos (25 cm) shows that land-cover fraction maps generated from SR-enhanced CHRIS/Proba data (9 m) have a lower overall fractional error compared to the land-cover fractions produced from the original CHRIS data (18 m), when validating both results at the 18 m resolution. Validation of SR results at the 9 m resolution produces an overall mean absolute error (OMAE) of 16.7% compared to an OMAE of 14.3% at the 18 m resolution, with the original data, yet the impervious surface map produced at 9 m has a much higher level of detail than the original map, better representing the built-up pattern of the urban environment. Detailed analysis of impervious surface mapping results for different reference proportion intervals points at smaller average fractional errors for impervious surface fractions produced from SR-enhanced data when validation is done at the original 18 m resolution, over the entire range of proportions. Only for pixels not containing any impervious surface cover the fractional error is marginally higher than with the original data. These results demonstrate the potential of SR-enhanced data for more accurate impervious surface mapping in dense and heterogeneous urban areas. Numéro de notice : A2012-496 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.05.015 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.05.015 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31942 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
081-2012061	SL	Revue	Centre de documentation	Revues en salle	Disponible

Damage 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)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 31 n° 13 (July /2010) . - pp 3427 - 3433 Titre : Damage consequence chain mapping after the Wenchuan Earthquake using remotely sensed data Type de document : Article/Communication Auteurs : H. Guo, Auteur ; J. Ma, Auteur ; B. Zhang, Auteur ; et al., Auteur Année de publication : 2010 Article en page(s) : pp 3427 - 3433 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] dommage matériel [Termes IGN] image aérienne [Termes IGN] image optique [Termes IGN] image radar moirée [Termes IGN] impact sur l'environnement [Termes IGN] lever aérien [Termes IGN] outil d'aide à la décision [Termes IGN] séisme [Termes IGN] Setchouan (Chine) Résumé : (Auteur) The Wenchuan Earthquake occurred on 12 May 2008 followed by frequent aftershocks. The earthquake suddenly caused heavy damage to roads, bridges, buildings and communication facilities. Two B4101 Citation II remote sensing airplanes from the Chinese Academy of Sciences took off to monitor the region soon after the earthquake and collected images using a synthetic aperture radar (SAR) device and an optical ADS40 sensor. Using images obtained from airborne surveys, a damage consequence chain was mapped that provided information about the type of damage and its extent. This proved to be of great help for rescue operations and after earthquake reconstructions. We present details of airborne survey, images and mapping of damages caused by the earthquake and the use of such information for a rescue operation. Numéro de notice : A2010-349 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431161003727648 En ligne : https://doi.org/10.1080/01431161003727648 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30543 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
080-2010081	RAB	Revue	Centre de documentation	En réserve L003	Exclu du prêt

Superresolution enhancement of hyperspectral CHRIS/Proba images with a thin-plate spline nonrigid transform model / J. Chan in IEEE Transactions on geoscience and remote sensing, vol 48 n° 6 (June 2010)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 48 n° 6 (June 2010) . - pp 2669 - 2579 Titre : Superresolution enhancement of hyperspectral CHRIS/Proba images with a thin-plate spline nonrigid transform model Type de document : Article/Communication Auteurs : J. Chan, Auteur ; J. Ma, Auteur ; Pieter Kempeneers, Auteur ; Frank Canters, Auteur Année de publication : 2010 Article en page(s) : pp 2669 - 2579 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] accentuation d'image [Termes IGN] fonction spline [Termes IGN] image hyperspectrale [Termes IGN] image PROBA-CHRIS [Termes IGN] itération [Termes IGN] point d'appui [Termes IGN] reconstruction d'image Résumé : (Auteur) Given the hyperspectral-oriented waveband configuration of multiangular CHRIS/Proba imagery, the scope of its application could widen if the present 18-m resolution would be improved. The multiangular images of CHRIS could be used as input for superresolution (SR) image reconstruction. A critical procedure in SR is an accurate registration of the low-resolution images. Conventional methods based on affine transformation may not be effective given the local geometric distortion in high off-nadir angular images. This paper examines the use of a nonrigid transform to improve the result of a nonuniform interpolation and deconvolution SR method. A scale-invariant feature transform is used to collect control points (CPs). To ensure the quality of CPs, a rigorous screening procedure is designed: 1) an ambiguity test; 2) the m-estimator sample consensus method; and 3) an iterative method using statistical characteristics of the distribution of random errors. A thin-plate spline (TPS) nonrigid transform is then used for the registration. The proposed registration method is examined with a Delaunay triangulation-based nonuniform interpolation and reconstruction SR method. Our results show that the TPS nonrigid transform allows accurate registration of angular images. SR results obtained from simulated LR images are evaluated using three quantitative measures, namely, relative mean-square error, structural similarity, and edge stability. Compared to the SR methods that use an affine transform, our proposed method performs better with all three evaluation measures. With a higher level of spatial detail, SR-enhanced CHRIS images might be more effective than the original data in various applications. Numéro de notice : A2010-192 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2009.2039797 En ligne : https://doi.org/10.1109/TGRS.2009.2039797 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30386 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
065-2010061	RAB	Revue	Centre de documentation	En réserve L003	Disponible
065-2010062	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Measurement of the left-lateral displacement of ms 8.1 Kunlun earthquake on 14 November 2001 using Landsat-7 ETM+ imagery / J.G. Liu in International Journal of Remote Sensing IJRS, vol 27 n°9-10 (May 2006)  

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Global structure of marine wind speed variability derived from Topex altimeter data / G. Chen in International Journal of Remote Sensing IJRS, vol 24 n° 24 (December 2003)  

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