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contenu dans ICC'15, 27th International Cartographic Conference, Rio de Janeiro, Brazil / International cartographic association = association cartographique internationale (2015)

Titre :	Sliding from imagery realism to topographic abstraction
Type de document :	Article/Communication
Auteurs :	Charlotte Hoarau , Auteur ; Sidonie Christophe , Auteur ; Sébastien Mustière , Auteur
Editeur :	International Cartographic Association ICA - Association cartographique internationale ACI
Année de publication :	2015
Projets :	Mapstyle / Christophe, Sidonie
Conférence :	ICC 2015, 27th International Cartographic Conference, 16th General Assembly 23/08/2015 28/08/2015 Rio de Janeiro Brésil open access proceedings
Note générale :	bibliographie
Langues :	Anglais (eng)
Descripteur :	[Termes IGN] niveau d'abstraction [Termes IGN] rendu réaliste [Vedettes matières IGN] Géovisualisation
Résumé :	(auteur) As the amount of cartographic representations dramatically rise, cartographers are incited to merge them into mixed cartographic representations. We identify two widespread design trends among such representations: a higher level of realism and an increasing use of imagery background. Moreover, current geovisualization applications provide interactive covisualization tools such as sliders, swipes, magnifiers, lenses or anchored windows that allow users to explore two cartographic representations simultaneously. Some related research works focus on the realism level of cartographic representations, while designing semi-realistic symbols (Jenny & Jenny 2014, Patterson 2002) or while integrating imagery data (Raposo 2014). Indeed, (Boer et al. 2013) foresee the impact of the realism level on the fitness for use of such representations. Our work aims at creating a cartographic continuum enabling users to navigate from an imagery based representation to a topographic map. An important issue of this work is to provide automatic design methods to build in-between cartographic representations. It takes up different challenges. First, we intend to preserve the readability of relevant cartographic elements in each in-between representation. Second, we aim at providing smooth transitions ensuring the continuity between consecutive representations of our continuum. Finally, we look for adapting promising computer graphics rendering methods such as texturing, shading or blending modes to our design issues. We propose elementary rendering methods to rise these design challenges. Progressive symbolization methods allow smooth transitions by using progressive transparency or procedural texturing methods, or by applying color morphing between, on the one hand, bright and artificial map colors and, and on the other hand, natural and unsaturated imagery colors. Adaptive symbolization methods provide road or label symbolizations that are locally contrasted regarding imagery background colors. The objective is to take into account the visual diversity and complexity of imagery backgrounds. Our elementary rendering methods provide symbolization specifications for each cartographic theme independently, or depending on the background layer. In order to create a consistent cartographic continuum and build complete in-between representations, these elementary methods have been combined into a global cartographic process. The calibration of the relative realism levels our elementary rendering method outputs have been guided by a user visual test in order to ensure an homogeneous level of realism for the whole representation. Our work further contributes to the formalisation of the concept of in-between cartographic representation which could be used to build other continuums (through seasonal representations or artistic styles for exemple), the proposal of cartographic rendering methods inspired by computer graphics and the conception of geovisualization tools to browse in-between representations from a topographic map to an imagery based cartographic representation.
Note de contenu :	abstract.
Numéro de notice :	C2015-026
Affiliation des auteurs :	LASTIG COGIT (2012-2019)
Thématique :	GEOMATIQUE
Nature :	Communication
nature-HAL :	ComAvecCL&ActesPubliésIntl
DOI :	sans
En ligne :	https://icaci.org/files/documents/ICC_proceedings/ICC2015/papers/2/fullpaper/T2- [...]
Format de la ressource électronique :	URL article
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=83284

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Sliding from imagery realism - Abstract

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contenu dans ICC'15, 27th International Cartographic Conference, Rio de Janeiro, Brazil / International cartographic association = association cartographique internationale (2015)

Titre :	Automatic rendering of a Cassini style
Type de document :	Article/Communication
Auteurs :	Sidonie Christophe , Auteur ; Charlotte Hoarau , Auteur ; Laurane Boulanger, Auteur ; Jérémie Turbet, Auteur ; David Vanderhaeghe, Auteur
Editeur :	International Cartographic Association ICA - Association cartographique internationale ACI
Année de publication :	2015
Projets :	Mapstyle / Christophe, Sidonie
Conférence :	ICC 2015, 27th International Cartographic Conference, 16th General Assembly 23/08/2015 28/08/2015 Rio de Janeiro Brésil open access proceedings
Note générale :	bibliographie
Langues :	Anglais (eng)
Descripteur :	[Termes IGN] carte de Cassini [Termes IGN] conception cartographique [Termes IGN] rendu expressif [Termes IGN] style cartographique [Termes IGN] Styled Layer Descriptor [Termes IGN] symbology encoding [Termes IGN] variable visuelle [Vedettes matières IGN] Géovisualisation
Mots-clés libres :	MapStyle project [ANR-12-CORD-0025]
Note de contenu :	abstract.
Numéro de notice :	C2015-025
Affiliation des auteurs :	LASTIG COGIT+Ext (2012-2019)
Thématique :	GEOMATIQUE
Nature :	Communication
nature-HAL :	ComAvecCL&ActesPubliésIntl
DOI :	sans
En ligne :	http://www.icc2015.org/abstract,1012.html
Format de la ressource électronique :	URL
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=83185

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Automatic rendering - Abstract

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contenu dans ICC'15, 27th International Cartographic Conference, Rio de Janeiro, Brazil / International cartographic association = association cartographique internationale (2015)

Titre :	A framework to formalize multi-scales land-use generalization in the ScaleMaster 2.0
Type de document :	Article/Communication
Auteurs :	Jean-François Girres , Auteur ; Guillaume Touya , Auteur
Editeur :	International Cartographic Association ICA - Association cartographique internationale ACI
Année de publication :	2015
Conférence :	ICC 2015, 27th International Cartographic Conference, 16th General Assembly 23/08/2015 28/08/2015 Rio de Janeiro Brésil open access proceedings
Note générale :	bibliographie
Langues :	Anglais (eng)
Descripteur :	[Termes IGN] base de données multi-représentation [Termes IGN] représentation multiple [Termes IGN] utilisation du sol [Vedettes matières IGN] Généralisation
Mots-clés libres :	continuous multi-representation scalemaster land-use
Résumé :	(auteur) This article presents a general framework to formalize the generalization of land-use coverages within the ScaleMaster2.0 model, a multi-scale automatic generalization system, developed to facilitate smooth transitions (i.e. cartographic continuum) between level of details in a multi-representation database (MRDB). The article describes the land-use simplification method developed, the strategy used to manage generalization on large areas, and the way to formalize multi-scales land-use generalization rules in the ScaleMatsre2.0. Finally, an experiment is provided on two datasets to illustrate the proposition: a land-use coverage in the area of Dakar (Senegal) and a map of sedimentary floor off the coast of Brittany (France).
Numéro de notice :	C2015-034
Affiliation des auteurs :	LASTIG COGIT+Ext (2012-2019)
Thématique :	GEOMATIQUE
Nature :	Communication
nature-HAL :	ComAvecCL&ActesPubliésIntl
DOI :	sans
En ligne :	https://icaci.org/files/documents/ICC_proceedings/ICC2015/papers/3/fullpaper/T3- [...]
Format de la ressource électronique :	URL article
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=83157

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A framework to formalize multi-scales

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contenu dans ICC'15, 27th International Cartographic Conference, Rio de Janeiro, Brazil / International cartographic association = association cartographique internationale (2015)

Titre :	Automatic structure detection and generalization of railway networks
Type de document :	Article/Communication
Auteurs :	Sandro Savino, Auteur ; Guillaume Touya , Auteur
Editeur :	International Cartographic Association ICA - Association cartographique internationale ACI
Année de publication :	aug 2015
Conférence :	ICC 2015, 27th International Cartographic Conference, 16th General Assembly 23/08/2015 28/08/2015 Rio de Janeiro Brésil open access proceedings
Note générale :	bibliographie
Langues :	Anglais (eng)
Descripteur :	[Termes IGN] détection automatique [Termes IGN] données localisées des bénévoles [Termes IGN] généralisation automatique de données [Termes IGN] OpenStreetMap [Termes IGN] réseau ferroviaire [Vedettes matières IGN] Généralisation
Résumé :	(auteur) Unlike road or river networks, railway networks automatic generalization are missing to properly handle the detailed networks provided in current geo-datasets like OpenStreetMap. This paper proposes automatic methods to automatically identify key structures of railway networks, such as parallel main tracks, or fan and pack patterns inside large train stations. Then, algorithms based on the detected structures are proposed to generalize the railway networks. The algorithms are tested on real datasets, including OpenStreetMap data.
Numéro de notice :	C2015-035
Affiliation des auteurs :	LASTIG COGIT+Ext (2012-2019)
Thématique :	GEOMATIQUE
Nature :	Communication
nature-HAL :	ComAvecCL&ActesPubliésIntl
DOI :	sans
En ligne :	https://icaci.org/files/documents/ICC_proceedings/ICC2015/papers/3/fullpaper/sav [...]
Format de la ressource électronique :	URL article
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=83187

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Automatic structure detection

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contenu dans ICC'15, 27th International Cartographic Conference, Rio de Janeiro, Brazil / International cartographic association = association cartographique internationale (2015)

Titre :	A system to apply cartographic practices on 3D renderings
Type de document :	Article/Communication
Auteurs :	Mickaël Brasebin , Auteur ; Elodie Buard , Auteur ; Sidonie Christophe , Auteur ; Florian Pelloie, Auteur
Editeur :	International Cartographic Association ICA - Association cartographique internationale ACI
Année de publication :	2015
Conférence :	ICC 2015, 27th International Cartographic Conference, 16th General Assembly 23/08/2015 28/08/2015 Rio de Janeiro Brésil open access proceedings
Note générale :	bibliographie
Langues :	Anglais (eng)
Descripteur :	[Termes IGN] données localisées 3D [Termes IGN] rendu réaliste [Termes IGN] style cartographique [Termes IGN] symbole graphique 3D [Termes IGN] variable visuelle [Vedettes matières IGN] Géovisualisation
Résumé :	(auteur) 3D renderings are used and abused, notably for public consultation concerning urban projects. As 3D semiotics is not clearly defined (Häberling, 2008), the impact of graphic parameters (e.g. material color or light) of such renderings on public understanding and perception is not controlled. On the contrary, in cartographic domain, good practices based on a set of visual variables have been recommended by (Bertin, 1982) in order to ensure understandable cartographic messages. The aim of our work is to use and revisit these practices to apply them on 3D renderings and thus to create 3D semiotics. In this contribution, we introduce an original generic method to assess styles of 3D renderings. The first step is to define 3D styles. We analyse graphic parameters of each geographic features composing the rendering (e.g. sidewalk, tree trunk, house roof or door). Four categories of styles are highlighted combining two pairs of characteristics, level of details and level of photorealism: detailed representation vs non-detailed representation and photorealistic representation (PR) vs non-photorealistic representation (NPR). In order to illustrate these four categories, a collection of 3D renderings, from urban projects focused on one building, has been set up. Each rendering can then be systematically described and categorized into theses categories, pointing out the graphic parameters that participate to the categories. As an example, it turns out that window transparency and absence of edging increase photorealism perception. In a second step, we want to navigate automatically between the styles belonging to these categories, for a same rendering. For that, transformations between renderings are described into elementary modifications of graphic parameters and traduced into visual variables in using the matrix proposed in (Jobst, 2008). For example, for a tested transformation between NP to NPR styles, hue, grain and value visual variables are modified. In future work, the undertaken method could be improved in extracting automatically necessary graphic parameters. In the long term, we aim to create methods to automatically change styles (3D or even 2D) according to the context of users and purposes. For that, we could apply and study other types of cartographic practices, not only based on visual variables, but concerning: identification of thematic relationships between geographic features in the rendering, rules to preserve readability of neighbour features using color, shape or style contrasts or adding thematic qualitative or quantitative informations. As for the users, our objective is to provide them tools to create 3D renderings with a specific style and relevant to their objectives.
Numéro de notice :	C2015-023
Affiliation des auteurs :	LASTIG COGIT (2012-2019)
Thématique :	GEOMATIQUE
Nature :	Communication
nature-HAL :	ComAvecCL&ActesPubliésIntl
DOI :	sans
En ligne :	https://icaci.org/files/documents/ICC_proceedings/ICC2015/papers/31/index.html
Format de la ressource électronique :	URL article
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=83161

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contenu dans ICC'15, 27th International Cartographic Conference, Rio de Janeiro, Brazil / International cartographic association = association cartographique internationale (2015)

Titre :	A geographic analysis of urban context for a new representation of soundscape
Type de document :	Article/Communication
Auteurs :	Saul Gomez , Auteur ; Catherine Dominguès , Auteur ; Pauline Delaître, Auteur ; Catherine Lavandier, Auteur
Editeur :	International Cartographic Association ICA - Association cartographique internationale ACI
Année de publication :	2015
Conférence :	ICC 2015, 27th International Cartographic Conference, 16th General Assembly 23/08/2015 28/08/2015 Rio de Janeiro Brésil open access proceedings
Langues :	Anglais (eng)
Résumé :	(auteur) The CartASUR project focuses on urban dwellers' feelings and aims to link perceptual data (from surveys) with physical urban data (geographic and urban databases) in order to design a prediction model for a new indicator of soundscape quality: sound pleasantness. Perceptual survey data makes it possible to understand how each noise source (cars, voices, birds…) influences the overall opinion of sound pleasantness. The first step consists in classifying perceptual data according to noise source which influences the urban dwellers' overall opinion. This paper proposes geographical reading of this classification based on the notion of urban context and shows two methods of spatial analysis to predict urban context in whatever point in the city. Different tools such as an acoustic horizon and map density are presented and used.
Numéro de notice :	C2015-024
Affiliation des auteurs :	LASTIG COGIT+Ext (2012-2019)
Nature :	Communication
nature-HAL :	ComAvecCL&ActesPubliésIntl
DOI :	sans
En ligne :	https://icaci.org/files/documents/ICC_proceedings/ICC2015/papers/4/538.html
Format de la ressource électronique :	URL article
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=83159

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contenu dans ICC'15, 27th International Cartographic Conference, Rio de Janeiro, Brazil / International cartographic association = association cartographique internationale (2015)

Titre :	Clutter and map legibility in automated cartography: A research agenda
Type de document :	Article/Communication
Auteurs :	Guillaume Touya , Auteur ; Sidonie Christophe , Auteur ; Charlotte Hoarau , Auteur
Editeur :	International Cartographic Association ICA - Association cartographique internationale ACI
Année de publication :	2015
Conférence :	ICC 2015, 27th International Cartographic Conference, 16th General Assembly 23/08/2015 28/08/2015 Rio de Janeiro Brésil open access proceedings
Langues :	Anglais (eng)
Descripteur :	[Termes IGN] carte numérique [Termes IGN] lisibilité perceptive [Vedettes matières IGN] Cartologie
Résumé :	(auteur) The clutter effect occurs when there is an excessive amount of information in a map or when this information is disorganized. Better measuring clutter is essential to improve the quality of outputs of automated cartography systems. This paper reviews some existing methods for measuring clutter from different research communities, highlighting the lacks for automated mapping. Three use cases are presented to show what kind of clutter measures are required to go further with the automation of map design, particularly in generalization, in symbol/style specification and in Volunteered Geographic Information mapping.
Numéro de notice :	C2015-027
Affiliation des auteurs :	LASTIG COGIT (2012-2019)
Thématique :	GEOMATIQUE
Nature :	Communication
nature-HAL :	ComAvecCL&ActesPubliésIntl
DOI :	sans
En ligne :	https://icaci.org/files/documents/ICC_proceedings/ICC2015/papers/1/905.html
Format de la ressource électronique :	URL article
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=83457

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contenu dans ICC'15, 27th International Cartographic Conference, Rio de Janeiro, Brazil / International cartographic association = association cartographique internationale (2015)

Titre :	How do map readers recognize a topographic mapping style?
Type de document :	Article/Communication
Auteurs :	Jérémie Ory , Auteur ; Sidonie Christophe , Auteur ; Sara Irina Fabrikant, Auteur ; Bénédicte Bucher , Auteur
Editeur :	International Cartographic Association ICA - Association cartographique internationale ACI
Année de publication :	2015
Conférence :	ICC 2015, 27th International Cartographic Conference, 16th General Assembly 23/08/2015 28/08/2015 Rio de Janeiro Brésil open access proceedings
Note générale :	L'URL ne présente que l'abstract ....
Langues :	Anglais (eng)
Résumé :	(auteur) Each National Mapping Agency produces a specific map product with a particular visual appearance that we define as a topographic map style. In this paper, we focus on the specific graphical characteristics of the designed topographic map product. We present the results of an empirical user study, aiming at identifying and assessing main graphical characteristics used by map users to recognize and to characterize the IGN-France topographic maps style. Our results suggest that 91% of the participants were able to recognize an IGN-France topographic map amongst other topographic map products. With this user study we are also able to distinguish which graphical characteristic play a role in map style recognition, either by the visual memory or by the visual perception. We have identified that the relief representation, including contour lines and the shaded relief, is one of the major graphical characteristics of IGN-France topographic style. Moreover, the representation of touristic POI, toponymy (and its lettering), the primary roads network and the forests are also essential for the participants.
Numéro de notice :	C2015-028
Affiliation des auteurs :	LASTIG COGIT+Ext (2012-2019)
Nature :	Communication
nature-HAL :	ComAvecCL&ActesPubliésIntl
DOI :	sans
En ligne :	https://icaci.org/files/documents/ICC_proceedings/ICC2015/papers/1/1022.html
Format de la ressource électronique :	URL article
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=83458

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IGN

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IGN / ENSG

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2014-2022 IGN

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scientifique