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Imaging the subsurface: How different visualizations of cross-sections affect the sense of uncertainty / Ane Bang-Kittilsen in Journal of Geovisualization and Spatial Analysis, vol 5 n° 1 (June 2021)  

Public [article]  inJournal of Geovisualization and Spatial Analysis > vol 5 n° 1 (June 2021) . - n° 1 Titre : Imaging the subsurface: How different visualizations of cross-sections affect the sense of uncertainty Type de document : Article/Communication Auteurs : Ane Bang-Kittilsen, Auteur ; Terje Midtbo, Auteur Année de publication : 2021 Article en page(s) : n° 1 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] enquête [Termes IGN] géologie [Termes IGN] incertitude des données [Termes IGN] utilisateur civil [Termes IGN] visualisation 3D [Vedettes matières IGN] Géovisualisation Résumé : (auteur) Geologists struggle to communicate the uncertainty that arise when mapping and interpreting the geological subsurface. Today, open data sharing policies make new value of geological information possible for a broader user group of non-experts. It is crucial to develop standard methods for visualizing uncertainty to increase the usability of geological information. In this study, a web experiment was set up to analyze whether and how different design choices influence the sense of uncertainty. Also, questions about the intuitiveness of symbols were asked. Two-hundred ten participants from different countries completed the experiment, both experts and non-experts in geology. Traditional visualization techniques in geology, like dashed lines, dotted lines and question mark, were tested. In addition, other visualizations were tested, such as hatched area and variations of symbol size, zoom levels and reference information. The results show that design choices have an impact on the participants’ assessment of uncertainty. The experts inquire about crucial information if it is not present. The results also suggest that when visualizing uncertainty, all the elements in the representation, and specifically the line and area symbols that delineate and colour the features, must work together to make the right impression. Numéro de notice : A2021-495 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s41651-020-00071-6 Date de publication en ligne : 03/01/2021 En ligne : http://dx.doi.org/10.1007/s41651-020-00071-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97963 [article]

Visualization of the Invisible (Editorial) / Terje Midtbo in Journal of Geovisualization and Spatial Analysis, vol 5 n° 1 (June 2021)  

Public [article]  inJournal of Geovisualization and Spatial Analysis > vol 5 n° 1 (June 2021) . - n° 13 Titre : Visualization of the Invisible (Editorial) Type de document : Article/Communication Auteurs : Terje Midtbo, Auteur ; Lars Harrie, Auteur Année de publication : 2021 Article en page(s) : n° 13 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] phénomène géographique [Termes IGN] visibilité [Vedettes matières IGN] Géovisualisation Résumé : (auteur) Visualizing geographical phenomena often involve communication of information and relationships through a map in either 2D or 3D. In many cases, the information conveyed through the map is a simplified and symbolic depiction of phenomena that is visible in our physical environment. However, maps are also effective for the communication of geographical phenomena that are hidden or are by nature “invisible” for the human eye. As well as invisible factors in our present environment, tracks of occurrences and events from the past have often been lost for many years. In the same way, future situations have still not materialized. This issue covers all these situations. From historical landscapes and events in the past, cadastre and underground geology today and urban planning for the future. The use of traditional cartographic techniques as well as virtual reality are discussed. Several of the research projects involve user studies. The main objectives contributing papers are to make the “invisible” information accessible and more understandable for humans. Numéro de notice : A2021-494 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s41651-021-00080-z Date de publication en ligne : 29/04/2021 En ligne : http://dx.doi.org/10.1007/s41651-021-00080-z Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97962 [article]

Definition of the map / Miljenko Lapaine (2021)  

Public Titre : Definition of the map Type de document : Article/Communication Auteurs : Miljenko Lapaine, Auteur ; Terje Midtbo, Auteur ; Georg Gartner, Auteur ; Temenoujka Bandrova, Auteur ; Tao Wang, Auteur ; Jie Shen, Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2021 Collection : Advances in cartography and GIScience num. 3 Importance : 6 p. Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] carte [Termes IGN] cartographe [Termes IGN] cartographie [Termes IGN] terminologie [Vedettes matières IGN] Cartologie Résumé : (auteur) Cartography has undergone great changes in the last 40 years. Many web platforms and location-based services are offering increasing opportunities, paper maps have been largely supplemented by multimedia and digital maps, and spatial databases. The definition of a map has changed throughout history and the differences in their definitions are presented. This paper aims for new central cartographic definitions, corresponding to contemporary cartographic development after presenting the current situation of the topic. Definitions of cartographic mapping, cartography and cartographer are proposed, as well as a new definition of the map. All they are made on the base of logical analyses including different types of maps from traditional and real to virtual, 3D, animation, and digital. Numéro de notice : C2021-050 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication DOI : 10.5194/ica-adv-3-9-2021 Date de publication en ligne : 29/11/2021 En ligne : https://doi.org/10.5194/ica-adv-3-9-2021 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99436

Micro-tasking as a method for human assessment and quality control in a geospatial data import / Atle Frenvik Sveen in Cartography and Geographic Information Science, vol 47 n° 2 (February 2020)  

Public [article]  inCartography and Geographic Information Science > vol 47 n° 2 (February 2020) . - pp 141 - 152 Titre : Micro-tasking as a method for human assessment and quality control in a geospatial data import Type de document : Article/Communication Auteurs : Atle Frenvik Sveen, Auteur ; Anne Sofie Strom Erichsen, Auteur ; Terje Midtbo, Auteur Année de publication : 2020 Article en page(s) : pp 141 - 152 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] algorithme de filtrage [Termes IGN] chevauchement [Termes IGN] contrôle qualité [Termes IGN] données localisées [Termes IGN] données localisées des bénévoles [Termes IGN] évaluation des données [Termes IGN] import de données [Termes IGN] OpenStreetMap [Termes IGN] précision des données [Termes IGN] production participative Résumé : (auteur) Crowd-sourced geospatial data can often be enriched by importing open governmental datasets as long as they are up-to date and of good quality. Unfortunately, merging datasets is not straight forward. In the context of geospatial data, spatial overlaps pose a particular problem, as existing data may be overwritten when a naïve, automated import strategy is employed. For example: OpenStreetMap has imported over 100 open geospatial datasets, but the requirement for human assessment makes this a time-consuming process which requires experienced volunteers or training. In this paper, we propose a hybrid import workflow that combines algorithmic filtering with human assessment using the micro-tasking method. This enables human assessment without the need for complex tools or prior experience. Using an online experiment, we investigated how import speed and accuracy is affected by volunteer experience and partitioning of the micro-task. We conclude that micro-tasking is a viable method for massive quality assessment that does not require volunteers to have prior experience working with geospatial data. Numéro de notice : A2020-058 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/15230406.2019.1659187 Date de publication en ligne : 16/09/2020 En ligne : https://doi.org/10.1080/15230406.2019.1659187 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=94575 [article]