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Fusion of high spatial and spectral resolution images: the ARSIS concept and its implementation / Thierry Ranchin in Photogrammetric Engineering & Remote Sensing, PERS, vol 66 n° 1 (January 2000)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 66 n° 1 (January 2000) . - pp 49 - 61 Titre : Fusion of high spatial and spectral resolution images: the ARSIS concept and its implementation Type de document : Article/Communication Auteurs : Thierry Ranchin, Auteur ; Lucien Wald, Auteur Année de publication : 2000 Article en page(s) : pp 49 - 61 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] fusion d'images [Termes IGN] image à haute résolution [Termes IGN] image Landsat [Termes IGN] image SPOT [Termes IGN] implémentation (informatique) [Termes IGN] limite de résolution géométrique [Termes IGN] modélisation [Termes IGN] spectre électromagnétique [Termes IGN] transformation en ondelettes Résumé : (Auteur) In various applications of remote sensing, when high spatial résolution is required in addition with classification results, sensor fusion is a solution. From a set of images with different spatial and spectral resolutions, the aim is to synthesize images with the highest spatial resolution available in the set and with an appropriate spectral content. Several sensor fusion and methods exist; most of them improve the spatial resolution but provide poor quality of the spectral content of the resulting image. Based on a rnultiresolution modeling of the information, the ARSIS concept (from its French name "Amélioration de la Résolution Spatiale par Injection de Structures") was designed with the aim of improving the spatial resolution together with a high quality in the spectral content of the synthesized images. The general case for the application of this concept is described. A quantitative comparison of all presented methods achieved for a SPOT image. Another example of the fusion of SPOT XS (20-m) and KVR-1000 (2-m) images is given. Practical information for the implementation of the wavelet transform, the multiresolution analysis, and the ARSIS concept by practitioners is given with particular relevance to SPOT and Landsat imagery. Numéro de notice : A2000-256 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://hal.science/hal-00356168 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21673 [article]

Requirement of ground tie points for InSAR DEM generation / G. Sun in Photogrammetric Engineering & Remote Sensing, PERS, vol 66 n° 1 (January 2000)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 66 n° 1 (January 2000) . - pp 81 - 90 Titre : Requirement of ground tie points for InSAR DEM generation Type de document : Article/Communication Auteurs : G. Sun, Auteur ; K.J. Ranson, Auteur ; J. Bufton, Auteur ; M. Roth, Auteur Année de publication : 2000 Article en page(s) : pp 81 - 90 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] image radar moirée [Termes IGN] image satellite [Termes IGN] interféromètrie par radar à antenne synthétique [Termes IGN] modèle numérique de surface [Termes IGN] points homologues Résumé : (Auteur) Ground tie points have been used to improve the accuracy of a DEM derived from Interferometric SAR (InSAR) data. The number of tie points required for ensuring certain accuracy of the InSAR-derived DEM was investigated in this study in two ways. One is the least-squares estimate of the corrections to a DEM using tie points, and the other is using an optimization procedure to estimate the uncertainties in estimations of InSAR parameters, mainly the baseline length, tilt angle, and reference phase using tie points, and resultant DEM error. It was found that, in terms of required tie points, both give comparable results. The latter method, though, can be applied in more realistic cases to design the tie point acquisition strategy for a mission. Numéro de notice : A2000-257 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.researchgate.net/publication/295637492_Requirement_of_ground_tie_poi [...] Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21674 [article]