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Pansharpening: context-based generalized Laplacian pyramids by robust regression / Gemine Vivone in IEEE Transactions on geoscience and remote sensing, vol 58 n° 9 (September 2020)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 58 n° 9 (September 2020) . - pp 6152 - 6167 Titre : Pansharpening: context-based generalized Laplacian pyramids by robust regression Type de document : Article/Communication Auteurs : Gemine Vivone, Auteur ; Stefano Marano, Auteur ; Jocelyn Chanussot, Auteur Année de publication : 2020 Article en page(s) : pp 6152 - 6167 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] analyse multirésolution [Termes IGN] fonction de transfert de modulation [Termes IGN] fusion d'images [Termes IGN] image multibande [Termes IGN] image panchromatique [Termes IGN] lissage de données [Termes IGN] Normalized Difference Vegetation Index [Termes IGN] pansharpening (fusion d'images) [Termes IGN] régression [Termes IGN] transformation en ondelettes Résumé : (auteur) Pansharpening refers to the combination of panchromatic (PAN) and multispectral (MS) images, designed to obtain a fused product retaining the fine spatial resolution of the former and the high spectral content of the latter. One of the most popular and successful approaches to pansharpening is the method known as context-based generalized Laplacian pyramid, which requires as a key ingredient for the estimation of the so-called injection coefficients. In this article, we propose the adoption of robust techniques for the estimation of the injection coefficients and detection strategies to select the clusters for which robust regression is needed, providing a suitable balancing between fusion performance and computational burden. Experimental results conducted on five real data sets acquired by the sensors QuickBird, WorldView-3, and WorldView-4, show the superiority of the proposed method with respect to current state-of-the-art pansharpening techniques. Numéro de notice : A2020-528 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2020.2974806 Date de publication en ligne : 04/03/2020 En ligne : https://doi.org/10.1109/TGRS.2020.2974806 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95706 [article]

Global observations of ocean surface winds and waves using spaceborne synthetic aperture radar measurements / Huimin Li (2019)  

Public Titre : Global observations of ocean surface winds and waves using spaceborne synthetic aperture radar measurements Type de document : Thèse/HDR Auteurs : Huimin Li, Auteur Editeur : Institut Mines-Télécom Atlantique IMT Atlantique Année de publication : 2019 Importance : 163 p. Format : 21 x 30 cm Note générale : Bibliographie Thèse de Doctorat de l'Ecole Nationale Supérieure des Mines-Telecom Atlantique Bretagne Pays de la Loire-IMT Atlantique, en Sciences de la Mer et du littoral : Spécialité : Océanographie, Physique et Environnement Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] angle d'incidence [Termes IGN] étalonnage des données [Termes IGN] fonction de transfert de modulation [Termes IGN] houle [Termes IGN] image Envisat-ASAR [Termes IGN] image Gaofen [Termes IGN] image radar moirée [Termes IGN] image Radarsat [Termes IGN] image Sentinel-SAR [Termes IGN] océan [Termes IGN] phénomène météorologique [Termes IGN] polarisation croisée [Termes IGN] radar à antenne synthétique [Termes IGN] rapport signal sur bruit [Termes IGN] tempête [Termes IGN] vague [Termes IGN] vent Index. décimale : THESE Thèses et HDR Résumé : (auteur) Spaceborne synthetic aperture radar (SAR) has been demonstrated invaluable in observing the global ocean winds and waves. SAR images acquired by multiple sensors are employed, including Sentinel-1(S-1), Envisat/ASAR, Gaofen-3 and Radarsat-2. This thesis reviews the commonly used SAR parameters (NRCS and azimuth cutoff) in the first part. A series of calibration steps are required to obtain a proper NRCS and assessment of NRCS is carried out for S-1wave mode (WV). It turns out that WV is poorly calibrated and is thus re-calibrated to obtain accurate NRCS. Azimuth cut off is demonstrated to be complementary to NRCS and can account for the sea state impact on the wind retrieval. Based on the available fully polarimetric SAR products, azimuth cut off is found to vary greatly with polarizations. The present SAR mapping transformation is sufficient to interpret the co-polarized azimuth cut off, while not for the cross-polarization. With the limitations of SAR imaging in mind, a new parameter is proposed and defined based on the SAR image cross-spectra, termed as MACS. The imaginary part of MACS is found to be a signed quantity relative to the wind direction. Given this dependence, an independent wind retrieval algorithm is expected to benefit. The magnitude of MACS is able to aid for estimate of modulation function of SAR mapping. In addition, MACS also gives promising results regarding the global wave studies. The global signatures of MACS at various wave lengths are well representative of the winds distributions, spatially and seasonally. MACS of long waves shows greater values over the storm tracks while the shorter waves are mostly within the trader winds. These results are expected to help evaluate the model outputs and complement further studies of the global wave spectral climate. Data continuity in the coming 10 years shall extend the study towards longer duration. Note de contenu : I- Background and study of the existing SAR parameters Chap. 1 - Background Chap. 2 - SAR imaging of the ocean surface Chap. 3 - Status and challenges in SAR winds Chap. 4 - Azimuth cutoff of polarimetric SAR images II- A new SAR parameter and its applications in wind/wave study Chap. 5 - A new SAR parameter: MACS and its directionality Chap. 6 - Statistics of MACS magnitude and derived RAR MTF Chap. 7 - Investigation of global ocean waves using SAR MACS Chap. 8 - Conclusion and perspectives Numéro de notice : 25729 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse française Note de thèse : Thèse de Doctorat : Océanographie, Physique et Environnement : Ecole nationale supérieure Mines-Télécom Atlantique : 2019 Organisme de stage : Ifremer nature-HAL : Thèse DOI : sans En ligne : https://tel.archives-ouvertes.fr/tel-02164506/document Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=94895

Vision-based localization with discriminative features from heterogeneous visual data / Nathan Piasco (2019)  

Public Titre : Vision-based localization with discriminative features from heterogeneous visual data Type de document : Thèse/HDR Auteurs : Nathan Piasco , Auteur ; Valérie Gouet-Brunet , Directeur de thèse ; Cédric Demonceaux, Directeur de thèse Editeur : Dijon : Université Bourgogne Franche-Comté UBFC Année de publication : 2019 Importance : 174 p. Format : 21 x 30 cm Note générale : Bibliographie Thèse présentée à l'école doctorale n° 37 de l'Université de Dijon pour l'obtention du Doctorat en instrumentation et informatique de l'image Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] algorithme ICP [Termes IGN] carte de profondeur [Termes IGN] classification par réseau neuronal convolutif [Termes IGN] données hétérogènes [Termes IGN] estimation de pose [Termes IGN] fonction de transfert de modulation [Termes IGN] localisation basée image [Termes IGN] localisation basée vision [Termes IGN] recherche d'image basée sur le contenu [Termes IGN] vision monoculaire Index. décimale : THESE Thèses et HDR Résumé : (Auteur) Visual-based Localization (VBL) consists in retrieving the location of a visual image within a known space. VBL is involved in several present-day practical applications, such as indoor and outdoor navigation, 3D reconstruction, etc. The main challenge in VBL comes from the fact that the visual input to localize could have been taken at a different time than the reference database. Visual changes may occur on the observed environment during this period of time, especially for outdoor localization. Recent approaches use complementary information in order to address these visually challenging localization scenarios, like geometric information or semantic information. However geometric or semantic information are not always available or can be costly to obtain. In order to get free of any extra modalities used to solve challenging localization scenarios, we propose to use a modality transfer model capable of reproducing the underlying scene geometry from a monocular image. At first, we cast the localization problem as a Content-based Image Retrieval (CBIR) problem and we train a CNN image descriptor with radiometry to dense geometry transfer as side training objective. Once trained, our system can be used on monocular images only to construct an expressive descriptor for localization in challenging conditions. Secondly, we introduce a new relocalization pipeline to improve the localization given by our initial localization step. In a same manner as our global image descriptor, the relocalization is aided by the geometric information learned during an offline stage. The extra geometric information is used to constrain the final pose estimation of the query. Through comprehensive experiments, we demonstrate the effectiveness of our proposals for both indoor and outdoor localization. Note de contenu : 1. Introduction 1.1 Long-term mapping 1.2 pLaTINUM project 1.3 Visual-based Localization with heterogeneous data 2. Review of Visual-Based Localization methods 2.1 Data Representation 2.2 VBL methods 2.3 Data with Dissimilar Appearances 2.4 Data heterogeneity 2.5 Discussion 2.6 Conclusion 3 Side modality learning for localization 3.1 Related work 3.2 Model architectures and training 3.3 Implementation details 3.4 Long-term localization 3.5 Night to day localization scenarios 3.6 Laser reflectance as side information 3.7 Conclusion 4. Pose refinement with learned depth map 4.1 Method 4.2 Relative pose estimation 4.3 Preliminary results 4.4 Indoor localization 4.5 Unsupervised training and outdoor localization 4.6 Discussion 4.7 Conclusion 5. Conclusion 5.1 Summary of the thesis 5.2 Scientific contributions 5.3 Future Research A Network architectures A.1 Global image descriptor network A.2 Multitask pose refinement network Numéro de notice : 26415 Affiliation des auteurs : LASTIG MATIS (2012-2019) Thématique : IMAGERIE Nature : Thèse française Note de thèse : Thèse de Doctorat : Instrumentation et informatique de l'image : Dijon : 2019 Organisme de stage : LaSTIG (IGN) nature-HAL : Thèse DOI : sans Date de publication en ligne : 13/11/2020 En ligne : https://hal.science/tel-03003651/document Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96302

Eye Tracking methodology / Andrew T. Duchowski (2017)  

Public Titre : Eye Tracking methodology Type de document : Monographie Auteurs : Andrew T. Duchowski, Auteur Editeur : Springer International Publishing Année de publication : 2017 Importance : 387 p. ISBN/ISSN/EAN : 978-3-319-57883-5 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Informatique [Termes IGN] acuité visuelle [Termes IGN] champ visuel [Termes IGN] chromatopsie [Termes IGN] fonction de transfert de modulation [Termes IGN] interface homme-machine [Termes IGN] logiciel de visualisation [Termes IGN] oculométrie [Termes IGN] Python (langage de programmation) [Termes IGN] réalité virtuelle [Termes IGN] vision [Termes IGN] vision binoculaire Résumé : (éditeur) Focusing on recent advances in analytical techniques, this third edition of Andrew Duchowski’s successful guide has been revised and extended. It includes new chapters on calibration accuracy, precision and correction; advanced eye movement analysis; binocular eye movement analysis; practical gaze analytics; eye movement synthesis. Eye Tracking Methodology opens with useful background information, including an introduction to the human visual system and key issues in visual perception and eye movement. The author then surveys eye-tracking devices and provides a detailed introduction to the technical requirements necessary for installing a system and developing an application program. Modern programming examples (in Python) are included and the author outlines the gaze analytics pipeline, a step-by-step data processing sequence from raw data to statistical analysis. Focusing on the use of modern video-based, corneal-reflection eye trackers – the most widely available and affordable types of systems, Andrew Duchowski takes a look at a number of interesting and challenging applications in human factors, collaborative systems, virtual reality, marketing and advertising. His primary focus is on methodology, and how analysis of eye movements can enhance research and development of anything that is inspected visually. Note de contenu : I- Introduction to the Human Visual System (HVS) II- Eye Tracking Systems III- Eye Tracking Methodology IV- Eye Tracking Applications Conclusion Numéro de notice : 25789 Affiliation des auteurs : non IGN Thématique : INFORMATIQUE Nature : Monographie En ligne : https://doi.org/10.1007/978-3-319-57883-5 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95001

MTF-adjusted pansharpening approach based on coupled multiresolution decompositions / Abdelaziz Kallel in IEEE Transactions on geoscience and remote sensing, vol 53 n° 6 (June 2015)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 53 n° 6 (June 2015) . - pp 3124 - 3145 Titre : MTF-adjusted pansharpening approach based on coupled multiresolution decompositions Type de document : Article/Communication Auteurs : Abdelaziz Kallel, Auteur Année de publication : 2015 Article en page(s) : pp 3124 - 3145 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] analyse multirésolution [Termes IGN] décomposition d'image [Termes IGN] fonction de transfert de modulation [Termes IGN] image Geoeye [Termes IGN] image multibande [Termes IGN] image Pléiades-HR [Termes IGN] image SPOT 6 [Termes IGN] pansharpening (fusion d'images) [Termes IGN] transformation en ondelettes Résumé : (Auteur) Among others, the wavelet-based pansharpening approach tries to enhance the resolution of the multispectral (MS) image by injection of spatial details extracted from the high-resolution panchromatic (PAN) image. The problem is presented as follows, the inputs are a coarse-resolution MS image and a high-resolution detail image provided from the PAN image; therefore, one would think that the wavelet reconstruction allows combining approximations and details to construct the high-resolution MS image. However, the wavelet transform (WT) assumes that details and approximations are calculated using the same wavelet decomposition. Now, in the pansharpening case, the MS low-resolution image is assumed to be aliased and blurred due to the imaging system modulation transfer function (MTF) that is approximated as a specific low-pass filter. Meanwhile, there are no constraints about details that can be extracted from PAN using discrete WT (DWT). Approximation and details are not any more orthogonal as needed in the reconstruct of the MS high-resolution image based on DWT. For that, we propose in this paper a new fusion schema [coupled multiresolution decomposition model (CMD)] allowing the reconstruction of a high-resolution MS given its approximation and details obtained by MTF-tailored downsampling and wavelet decomposition, respectively. For validation, CMD is applied to Pléiades, GeoEye-1, and SPOT 6 images. Compared to other approaches [i.e., Gram-Schmidt (GS) adaptive, GS mode 2 (GS2), “À trous' WT (AWT), generalized Laplacian pyramid (GLP), DWT, and PCI Geomatics software algorithm], our method performs generally better. Numéro de notice : A2015-282 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2014.2369056 Date de publication en ligne : 19/12/2014 En ligne : https://doi.org/10.1109/TGRS.2014.2369056 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76399 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
065-2015061	SL	Revue	Centre de documentation	Revues en salle	Disponible

An experimental comparison of directly and indirectly derived modulation transfer functions / Chia-Hsiang Yang in Photogrammetric record, vol 30 n° 149 (March - May 2015)  

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Pléiades satellites image quality commissioning / Laurent Lebègue in Revue Française de Photogrammétrie et de Télédétection, n° 209 (Janvier 2015)  

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Manual of photogrammetry, sixth edition / J. Chris Mcglone (2013)

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Influence of image characteristics on image quality / T. Royer (2010)

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Comparative geometric and radiometric evaluation of mobile phone and still video cameras / Devrim Akca in Photogrammetric record, vol 24 n° 127 (September - November 2009)  

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Imagerie spatiale / P. Lier (2008)

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Evaluation of resolving power and MTF of DMC / Eija Honkavaara in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)  

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Angular resolution of terrestrial laser scanners / Derek D. Lichti in Photogrammetric record, vol 21 n° 114 (June - August 2006)  

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MTF-tailored multiscale fusion of high-resolution multispectral and panchromatic imagery / B. Aiazzi in Photogrammetric Engineering & Remote Sensing, PERS, vol 72 n° 5 (May 2006)  

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Automatic Digital Surface Model (DSM) generation from linear array images / Li Zhang (2005)  

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