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Visual abstraction and stylisation of maps / Tobias Isenberg in Cartographic journal (the), vol 50 n° 1 (February 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 1 (February 2013) . - pp 8 - 18 Titre : Visual abstraction and stylisation of maps Type de document : Article/Communication Auteurs : Tobias Isenberg, Auteur Année de publication : 2013 Article en page(s) : pp 8 - 18 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique [Termes IGN] conception cartographique [Termes IGN] couleur (rédaction cartographique) [Termes IGN] esthétique cartographique [Termes IGN] estompage [Termes IGN] généralisation cartographique automatisée [Termes IGN] lissage de données [Termes IGN] style cartographique Résumé : (Auteur) We explore visual map abstraction for the generation of stylized renderings of 2D map data. We employ techniques that are centred around the concept of shape simplification and graph layout and that allow iterative abstraction of 2D maps. We use data from publicly available sources and show how we can iteratively generate aesthetic renditions of these maps. These renditions do not have the goal to allow for navigation tasks, but instead show the map data in a distorted manner. The techniques used to create these images apply simplification, abstraction/generalisation, and displacement operations to the map elements in varying orders and add stylistic shading to produce aesthetic renditions for print or electronic displays. The degree of abstraction/generalisation can be individually chosen and determines the characteristics of the distorted map: whether components retain their shape, degenerate, or are processed in a manner that the abstraction becomes the focus of the image rather than the underlying map data. The renditions can be further personalized by choosing shading and colours for this shading. Together, the presented techniques allow for playful and creative exploration of aesthetic renditions of 2D map data. Numéro de notice : A2013-185 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000007 En ligne : https://doi.org/10.1179/1743277412Y.0000000007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32323 [article]

Exemplaires(1)

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030-2013011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Identification of optimal colours for maps from the web / Jörg Steinrücken in Cartographic journal (the), vol 50 n° 1 (February 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 1 (February 2013) . - pp 19 - 32 Titre : Identification of optimal colours for maps from the web Type de document : Article/Communication Auteurs : Jörg Steinrücken, Auteur ; L. Plumer, Auteur Année de publication : 2013 Article en page(s) : pp 19 - 32 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] carte sur mesure [Termes IGN] cohérence des couleurs [Termes IGN] communication cartographique [Termes IGN] visualisation cartographique [Termes IGN] Web Map Service [Termes IGN] web mapping [Vedettes matières IGN] Cartologie Résumé : (Auteur) Maps which are created on demand by combining geospatial data from different Web Map Services integrate conflicting portrayals and do not satisfy the requirements of effective cartographic communication. A significant improvement is achieved by selecting clearly distinguishable colours which are determined by solving an optimisation problem. Cartographic guidelines and user characteristics (e.g. colour vision impairment) can be incorporated into the optimisation model as constraints which guide the selection of colours. Numéro de notice : A2013-186 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000017 En ligne : https://doi.org/10.1179/1743277412Y.0000000017 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32324 [article]

Exemplaires(1)

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From LiDAR data to forest representation on multi-scale / Freiderike Schwarzbach in Cartographic journal (the), vol 50 n° 1 (February 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 1 (February 2013) . - pp 33 - 42 Titre : From LiDAR data to forest representation on multi-scale Type de document : Article/Communication Auteurs : Freiderike Schwarzbach, Auteur ; Juha Oksasnen, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 33 - 42 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] arbre (flore) [Termes IGN] carte de la végétation [Termes IGN] conception cartographique [Termes IGN] données lidar [Termes IGN] figuré ponctuel [Termes IGN] généralisation cartographique [Termes IGN] orthoimage couleur [Termes IGN] rédaction cartographique [Termes IGN] représentation multiple Résumé : (Auteur) The paper describes processing methods for portraying forest areas on maps utilizing point symbols. The forest map design is based on the use of individual tree data, which is detected from airborne laser scanning data and colour-infrared orthophotos. Several generalisation and symbolisation approaches have been tested in order to use the tree data set for cartographic purposes. Our generalisation method differentiates between trees in dense forests and tree structures in open areas, such as isolated trees, tree groups, tree rows and sparsely scattered trees. The tree symbols are integrated visually with the other map content. The results show that the production of attractive and useful maps requires an advanced generalisation method due to the massive amount of tree objects extracted from the laser scanning data as well as a generalisation level and a symbol type for the trees that are carefully chosen according to the map scale. Furthermore, sophisticated visualisation methods are needed for composing the maps. The created maps are part of a project that aims at supporting outdoor activities using multi-scale maps as part of a multi-publishing service. Numéro de notice : A2013-187 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000015 En ligne : https://doi.org/10.1179/1743277412Y.0000000015 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32325 [article]

Exemplaires(1)

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An approach to transform Chinese historical books into scenario-based historical maps / Li He in Cartographic journal (the), vol 50 n° 1 (February 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 1 (February 2013) . - pp 49 - 65 Titre : An approach to transform Chinese historical books into scenario-based historical maps Type de document : Article/Communication Auteurs : Li He, Auteur ; Min Chen, Auteur ; Guonian Lu, Auteur Année de publication : 2013 Article en page(s) : pp 49 - 65 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie étrangère [Termes IGN] carte interactive [Termes IGN] cartographie historique [Termes IGN] Chine [Termes IGN] conception cartographique [Termes IGN] données spatiotemporelles [Termes IGN] histoire [Termes IGN] littérature [Termes IGN] monographie Résumé : (Auteur) Spatio-temporal information (e.g. time, location, person and event) recorded in detail in vast Chinese historical books can provide evidence about the movement of entities (e.g. people, family, army and weapons) and their underlying spatial behaviours. Furthermore, this information largely reflects the process of social development, which makes it valuable to both professional research and public awareness. However, this information cannot be easily expressed and visually utilized because it is often hidden in the text of historical books. Aiming to better realize the potential value of such abundant information derived from historical books and bridging the gap between historical research and geographic space, a feasible and appropriate approach is explored in this article, to guide the transforming process from historical books to historical maps. The hope is that providing the scenarios of historical events will benefit related historical and social research. First, the integral framework of the approach was introduced, and the detail of building the specific spatio-temporal framework for information matching was discussed. Based on the spatio-temporal framework, the specification for the representation of historical books was designed. By extracting the spatio-temporal data from historical books, organizing them according to the specification and matching them with the spatio-temporal framework, the scenarios of historical events in the book (e.g. wars, migration, diseases, natural disasters, mass movement, etc.) can be visually transformed into historical maps. As the most critical writing of the Chinese Twenty-Four Histories, the Records of the Grand Historian (also known as Shiji) was employed as an example to test the proposed approach. Numéro de notice : A2013-188 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000024 En ligne : https://doi.org/10.1179/1743277412Y.0000000024 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32326 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
030-2013011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Ephemeral conflation / Carlos-Humberto Gonzalez in Cartographic journal (the), vol 50 n° 1 (February 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 1 (February 2013) . - pp 43 - 48 Titre : Ephemeral conflation Type de document : Article/Communication Auteurs : Carlos-Humberto Gonzalez, Auteur ; Carlos Lopez-Vasquez, Auteur ; Miguel-Angel Bernabé, Auteur Année de publication : 2013 Article en page(s) : pp 43 - 48 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] appareil portable [Termes IGN] conflation [Termes IGN] données localisées des bénévoles [Termes IGN] Infrastructure de données [Termes IGN] qualité des données [Termes IGN] téléphone intelligent Résumé : (Auteur) The great availability of geographic information, due to Spatial Data Infrastructure development, the existence of data collected by volunteers, etc., makes the problems of geometric interoperability of data very conspicuous. Traditionally, conflation is being carefully carried out and evaluated by experts. Yet there are practices that involve occasional users who will look up the information in mobile devices without the intention of keeping a copy. Evaluation will be carried out with different criteria, involving the Human Visual System and perhaps even the characteristics of the physical devices as well. In this paper, we coin the term ‘Ephemeral Conflation’ to characterize that context and the procedures to evaluate it. Numéro de notice : A2013-189 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000014 En ligne : https://doi.org/10.1179/1743277412Y.0000000014 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32327 [article]

Exemplaires(1)

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030-2013011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Effective graphic features for multivariate symbol mapping / Vasan Choengsa-Ard in Cartographic journal (the), vol 50 n° 1 (February 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 1 (February 2013) . - pp 66 - 81 Titre : Effective graphic features for multivariate symbol mapping Type de document : Article/Communication Auteurs : Vasan Choengsa-Ard, Auteur ; Nitin Kumar Tripathi, Auteur ; Paul Janecek, Auteur Année de publication : 2013 Article en page(s) : pp 66 - 81 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique [Termes IGN] données spatiotemporelles [Termes IGN] données statistiques [Termes IGN] prototype [Termes IGN] sémiologie graphique [Termes IGN] signe conventionnel [Termes IGN] symbole graphique [Termes IGN] vision Résumé : (Auteur) Various patterns of cartographic multivariate symbols (MSs) have been developed to work efficiently with objective symbol mapping. One such MS pattern is composed of a graph that uses spatial data to represent statistical data. A preliminary study revealed major problems with users’ perceptions and understanding of the symbol. These problems present obstacles to the presentation objectives. We are therefore interested in studying the human factors that contribute to the visual perception of graph symbols. We predict that the graph symbols currently in use are too complex for viewers to fully understand what they are intended to represent. This research aims to study the mechanisms and behaviours of human visual perception that are necessary to understand cartography MSs and to determine a more effective prototype symbol that presents and conveys information to viewers more efficiently. The prototype design is based on a basic cartographic symbol and includes the characteristics and properties of the original patterns of graph symbols via a study of their pros and cons. Graphic structures and properties were modified to create a more effective symbol. Numéro de notice : A2013-190 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000025 En ligne : https://doi.org/10.1179/1743277412Y.0000000025 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32328 [article]

Exemplaires(1)

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030-2013011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Implementation of the 1:10 000 scale for visualisation of environmental changes / Radzym Lawniczack in Cartographic journal (the), vol 50 n° 1 (February 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 1 (February 2013) . - pp 82 - 90 Titre : Implementation of the 1:10 000 scale for visualisation of environmental changes Type de document : Article/Communication Auteurs : Radzym Lawniczack, Auteur ; Jaroslaw Kubiak, Auteur Année de publication : 2013 Article en page(s) : pp 82 - 90 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] 1:10.000 [Termes IGN] analyse de données [Termes IGN] carte thématique [Termes IGN] changement climatique [Termes IGN] environnement [Termes IGN] implémentation (informatique) [Termes IGN] Pologne [Termes IGN] représentation des détails topographiques [Termes IGN] système d'information géographique [Termes IGN] visualisation cartographique Résumé : (Auteur) This paper is an elaboration of the theses proposed in ‘Cartographic presentation of forms and degradation of the natural environment: sozological map on a scale of 1:50 000’ (Lawniczak and Kubiak, 2009), where a sozological map of Poland was presented. The said map contained comprehensive cartographic information on the forms of environmental protection and degradation, made to a scale of 1:50 000. The thematic scope of the map has already been modified twice: in 1997 and in 2005, with the ensuing changes presented in corresponding manuals: Sozological Map on a Scale of 1:50 000, in an Analogue and Digital Form (Chief National Geodesist, 1997) and Technical Guidelines GIS-4. Sozological Map of Poland, Scale of 1:50 000, in an Analogue and Digital Form (2005). Many years’ worth of experience gained since the launch of this cartographic system points out to the need for broadening the presented content and improving the map’s scale. Thus, attempts have been made at rescaling the map to 1:10 000. Increasing the degree of detail is particularly necessary for presenting areas of intensive human activity. In this paper, the authors propose technical and graphical solutions for the 1:10 000 scale Numéro de notice : A2013-191 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000009 En ligne : https://doi.org/10.1179/1743277412Y.0000000009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32329 [article]

Exemplaires(1)

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030-2013011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

New insights into the concept of orienteering maps / Angel Munoz-Nieto in Cartographic journal (the), vol 50 n° 1 (February 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 1 (February 2013) . - pp 91 - 97 Titre : New insights into the concept of orienteering maps Type de document : Article/Communication Auteurs : Angel Munoz-Nieto, Auteur ; Pablo Rodriguez-Gonzalvez, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 91 - 97 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie [Termes IGN] carte thématique [Termes IGN] conception cartographique [Termes IGN] course d'orientation [Termes IGN] rédaction cartographique Résumé : (Auteur) Orienteering is both a mental and physical activity. A compass and maps are the basic tools of orienteering, and orienteering requires specialized maps that have been adapted and standardized to guarantee fair competition. Map-making for orienteering has become a highly specialized cartographic task. This paper aims to answer three main questions: What is an orienteering map (o-map)? How should we categorize o-maps? What are its essential components? The answers to these questions provide insight into the concept and nature of o-maps. By analysing the functions of this type of maps and by searching for similarities and differences between o-maps, topographic maps, and nautical charts, we attempt to comprehensively characterize and conceptualize o-maps to contribute to their improvement. Numéro de notice : A2013-192 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000006 En ligne : https://doi.org/10.1179/1743277412Y.0000000006 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32330 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
030-2013011	RAB	Revue	Centre de documentation	En réserve L003	Disponible