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Multichannel Pulse-Coupled Neural Network-Based Hyperspectral Image Visualization / Puhong Duan in IEEE Transactions on geoscience and remote sensing, vol 58 n° 4 (April 2020)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 58 n° 4 (April 2020) . - pp 2444 - 2456 Titre : Multichannel Pulse-Coupled Neural Network-Based Hyperspectral Image Visualization Type de document : Article/Communication Auteurs : Puhong Duan, Auteur ; Xudong Kang, Auteur ; Shutao Li, Auteur ; et al., Auteur Année de publication : 2020 Article en page(s) : pp 2444 - 2456 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] analyse d'image numérique [Termes IGN] analyse multibande [Termes IGN] chromatopsie [Termes IGN] classification par réseau neuronal convolutif [Termes IGN] cohérence des couleurs [Termes IGN] image en couleur composée [Termes IGN] image hyperspectrale [Termes IGN] image RVB [Termes IGN] synthèse trichromatique [Termes IGN] visualisation de données Résumé : (auteur) Hyperspectral Image (HSI) visualization, which aims at displaying as much material information of original images as possible on a trichromatic monitor with natural color, plays an important role in image interpretation and analysis. However, most of the HSI visualization methods only focus on presenting the detail information of a scene without providing natural colors and distinguishing land covers with similar colors. In order to address this problem, this article proposes a multichannel pulse-coupled neural network (MPCNN)-based HSI visualization method, which consists of the following steps. First, the MPCNN is proposed and explored to fuse the original HSI so as to obtain a fused band with rich spatial details. Then, a color mapping scheme is proposed to determine the weights of red, green, and blue (RGB) channels. Finally, the weighted RGB channels are stacked together for visualization. Experiments performed on four hyperspectral data sets demonstrate that the proposed method not only displays the HSI with nature colors but also improves the details in the image. The effectiveness of the proposed method is demonstrated in terms of both visual effect and objective indexes. Numéro de notice : A2020-197 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2019.2949427 date de publication en ligne : 20/11/2019 En ligne : https://doi.org/10.1109/TGRS.2019.2949427 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=94867 [article]

Colour Helmholtz stereopsis for reconstruction of dynamic scenes with arbitrary unknown reflectance / Nadejda Roubtsova in International journal of computer vision, vol 124 n° 1 (August 2017)  

Public [article]  inInternational journal of computer vision > vol 124 n° 1 (August 2017) . - pp 18 – 48 Titre : Colour Helmholtz stereopsis for reconstruction of dynamic scenes with arbitrary unknown reflectance Type de document : Article/Communication Auteurs : Nadejda Roubtsova, Auteur ; Jean-Yves Guillemaut, Auteur Année de publication : 2017 Article en page(s) : pp 18 – 48 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] chromatopsie [Termes IGN] distribution du coefficient de réflexion bidirectionnelle BRDF [Termes IGN] image multibande [Termes IGN] longueur d'onde [Termes IGN] multiplexage [Termes IGN] reconstruction d'image [Termes IGN] réflectance Résumé : (auteur) Helmholtz Stereopsis is a powerful technique for reconstruction of scenes with arbitrary reflectance properties. However, previous formulations have been limited to static objects due to the requirement to sequentially capture reciprocal image pairs (i.e. two images with the camera and light source positions mutually interchanged). In this paper, we propose colour Helmholtz Stereopsis—a novel framework for framework based on wavelength multiplexing. To address the new set of challenges introduced by multispectral data acquisition, the proposed Colour Helmholtz Stereopsis pipeline uniquely combines a tailored photometric calibration for multiple camera/light source pairs, a novel procedure for spatio-temporal surface chromaticity calibration and a state-of-the-art Bayesian formulation necessary for accurate reconstruction from a minimal number of reciprocal pairs. In this framework, reflectance is spatially unconstrained both in terms of its chromaticity and the directional component dependent on the illumination incidence and viewing angles. The proposed approach for the first time enables modelling of dynamic scenes with arbitrary unknown and spatially varying reflectance using a practical acquisition set-up consisting of a small number of cameras and light sources. Experimental results demonstrate the accuracy and flexibility of the technique on a variety of static and dynamic scenes with arbitrary unknown BRDF and chromaticity ranging from uniform to arbitrary and spatially varying. Numéro de notice : A2017-398 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article En ligne : https://doi.org/10.1007/s11263-016-0951-0 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85935 [article]

Constrained Palette-Space Exploration / Nicolas Mellado in ACM Transactions on Graphics, TOG, Vol 36 n° 4 (July 2017)    

Public [article]  inACM Transactions on Graphics, TOG > Vol 36 n° 4 (July 2017) . - 14 p. Titre : Constrained Palette-Space Exploration Type de document : Article/Communication Auteurs : Nicolas Mellado, Auteur ; David Vanderhaeghe, Auteur ; Charlotte Hoarau , Auteur ; Sidonie Christophe , Auteur ; Mathieu Brédif , Auteur ; Loïc Barthe, Auteur Année de publication : 2017 Projets : 1-Pas de projet / Conférence : SIGGRAPH 2017, ACM conference 30/07/2017 03/08/2017 Los Angeles Californie - Etats-Unis Article en page(s) : 14 p. Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] cartologie [Termes IGN] chromatopsie [Termes IGN] graphe [Termes IGN] interpolation [Termes IGN] malvoyant [Termes IGN] palette de couleurs [Termes IGN] programmation par contraintes [Vedettes matières IGN] Géovisualisation Résumé : (Auteur) Color palettes are widely used by artists to define colors of artworks and explore color designs. In general, artists select the colors of a palette by following a set of rules, e.g. contrast or relative luminance. Existing interactive palette exploration tools explore palette spaces following limited constraints defined as geometric configurations in color space e.g. harmony rules on the color wheel. Palette search algorithms sample palettes from color relations learned from an input dataset, however they cannot provide interactive user edits and palette refinement. We introduce in this work a new versatile formulation enabling the creation of constraint-based interactive palette exploration systems. Our technical contribution is a graph-based palette representation, from which we define palette exploration as a minimization problem that can be solved efficiently and provide real-time feedback. Based on our formulation, we introduce two interactive palette exploration strategies: constrained palette exploration, and for the first time, constrained palette interpolation. We demonstrate the performances of our approach on various application cases and evaluate how it helps users finding trade-offs between concurrent constraints. Numéro de notice : A2017-404 Affiliation des auteurs : LaSTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1145/3072959.3073650 date de publication en ligne : 20/07/2017 En ligne : https://doi.org/10.1145/3072959.3073650 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86220 [article]

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Cartographic continuum rendering based on color and texture interpolation to enhance photo-realism perception / Charlotte Hoarau in ISPRS Journal of photogrammetry and remote sensing, vol 127 (May 2017)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 127 (May 2017) . - pp 27 - 38 Titre : Cartographic continuum rendering based on color and texture interpolation to enhance photo-realism perception Type de document : Article/Communication Auteurs : Charlotte Hoarau , Auteur ; Sidonie Christophe , Auteur Année de publication : 2017 Projets : Mapstyle / Christophe, Sidonie Article en page(s) : pp 27 - 38 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] chromatopsie [Termes IGN] continuité cartographique [Termes IGN] couche thématique [Termes IGN] couleur (rédaction cartographique) [Termes IGN] données maillées [Termes IGN] données vectorielles [Termes IGN] interpolation [Termes IGN] orthoimage [Termes IGN] rendu réaliste [Termes IGN] représentation continue [Termes IGN] texture d'image [Termes IGN] visualisation de données [Vedettes matières IGN] Géovisualisation Résumé : (Auteur) Graphic interfaces of geoportals allow visualizing and overlaying various (visually) heterogeneous geographical data, often by image blending: vector data, maps, aerial imagery, Digital Terrain Model, etc. Map design and geo-visualization may benefit from methods and tools to hybrid, i.e. visually integrate, heterogeneous geographical data and cartographic representations. In this paper, we aim at designing continuous hybrid visualizations between ortho-imagery and symbolized vector data, in order to control a particular visual property, i.e. the photo-realism perception. The natural appearance (colors, textures) and various texture effects are used to drive the control the photo-realism level of the visualization: color and texture interpolation blocks have been developed. We present a global design method that allows to manipulate the behavior of those interpolation blocks on each type of geographical layer, in various ways, in order to provide various cartographic continua. Numéro de notice : A2017-187 Affiliation des auteurs : LaSTIG COGIT (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2016.09.012 date de publication en ligne : 20/10/2016 En ligne : https://doi.org/10.1016/j.isprsjprs.2016.09.012 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84772 [article]

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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 [Termes IGN] visualisation lenticulaire 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

Réseaux de neurones convolutifs pour la segmentation sémantique et l'apprentissage d'invariants de couleur / Damien Fourure (2017)  

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Les troubles de la perception des couleurs en cartographie / Frédéric Miotto in Carto, le monde en cartes, n° 37 (septembre - octobre 2016)

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Assessing the effectiveness and efficiency of map colour for colour impairments using an eye-tracking approach / Weihua Dong in Cartographic journal (the), Vol 53 n° 2 (May 2016)  

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Amélioration de la carte topographique pour les daltoniens / Francis Dhée (2013)  

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Increasing accessibility for map readers with acquired and inherited colour vision deficiencies: A re-colouring algorithm for maps / G. Culp in Cartographic journal (the), vol 49 n° 4 (November 2012)  

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Imagerie numérique / Christine Fernandez-Maloigne (2012)

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Traitements numériques des images de télédétection, Vol. 1. Notions de base sur les couleurs / Olivier de Joinville (2012)

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N'oubliez pas les daltoniens : Présentation de F. Dhée lors de l'ICC 2011 sur le site du COGIT / Françoise de Blomac in SIG la lettre, n° 130 (octobre 2011)

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Traitement des données de télédétection / Michel-Claude Girard (2010)

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A process to design creative legends on-demand / Sidonie Christophe (15/11/2009) 

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