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Cognitively plausible representations for the alignment of sketch and geo-referenced maps / Sahib Jan in Journal of Spatial Information Science, JoSIS, n° 14 (March 2017)  

Public [article]  inJournal of Spatial Information Science, JoSIS > n° 14 (March 2017) . - pp 31 - 59 Titre : Cognitively plausible representations for the alignment of sketch and geo-referenced maps Type de document : Article/Communication Auteurs : Sahib Jan, Auteur ; Angela Schwering, Auteur ; Carl Schultz, Auteur ; Malumbo Chaka Chipofya, Auteur Année de publication : 2017 Article en page(s) : pp 31 - 59 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] croquis topographique [Termes IGN] représentation cartographique 2D [Termes IGN] réseau de contraintes [Vedettes matières IGN] Cartologie Résumé : (Auteur) In many geo-spatial applications, freehand sketch maps are considered as an intuitive way to collect user-generated spatial information. The task of automatically mapping information from such hand-drawn sketch maps to geo-referenced maps is known as the alignment task. Researchers have proposed various qualitative representations to capture distorted and generalized spatial information in sketch maps. However, thus far the effectiveness of these representations has not been evaluated in the context of an alignment task. This paper empirically evaluates a set of cognitively plausible representations for alignment using real sketch maps collected from two different study areas with the corresponding geo-referenced maps. Firstly, the representations are evaluated in a single-aspect alignment approach by demonstrating the alignment of maps for each individual sketch aspect. Secondly, representations are evaluated across multiple sketch aspects using more than one representation in the alignment task. The evaluations demonstrated the suitability of the chosen representation for aligning user-generated content with geo-referenced maps in a real-world scenario. Numéro de notice : A2017-818 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5311/JOSIS.2017.14.294 En ligne : https://doi.org/10.5311/JOSIS.2017.14.294 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89303 [article]

Invariant spatial information in sketch maps — a study of survey sketch maps of urban areas / Jia Wang in Journal of Spatial Information Science, JoSIS, n° 11 (September 2015)  

Public [article]  inJournal of Spatial Information Science, JoSIS > n° 11 (September 2015) Titre : Invariant spatial information in sketch maps — a study of survey sketch maps of urban areas Type de document : Article/Communication Auteurs : Jia Wang, Auteur ; Angela Schwering, Auteur Année de publication : 2015 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] cognition [Termes IGN] croquis topographique [Termes IGN] invariant [Termes IGN] objet géographique [Termes IGN] zone urbaine [Vedettes matières IGN] Géovisualisation Résumé : (auteur) It is commonly recognized that free-hand sketch maps are influenced by cognitive impacts and therefore sketch maps are in complete, distorted, and schematized. This makes it difficult to achieve a one-to-one alignment between a sketch map and its corresponding geo-referenced metric map. Nevertheless, sketch maps are still useful to communicate spatial knowledge, indicating that sketch maps contain certain spatial information that is robust to cognitive impacts. In existing studies, sketch maps are used frequently to measure cognitive maps. However, little work has been done on invariant spatial information in sketch maps, which is the information of spatial configurations representing correctly the real world. We aim to study such information from a cognitive perspective. This paper first presents basic spatial objects identified in sketch maps and then introduces sketch aspects that capture invariant spatial information. The accuracy and reliability of these aspects were evaluated by a human study. We collected sketch maps from participants, extracted and measured spatial relations of identified spatial objects, and in the end analyzed the accuracy and statistical significance of these relations. Based on the statistical survey, we propose in this paper a set of seven sketch aspects that constitute invariant spatial information, along with a spatial analysis method to measure them. The findings of these aspects help to understand which spatial information is preserved under the transformation from the physical world to human sketch maps. Numéro de notice : A2015--079 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5311/JOSIS.2015.11.225 En ligne : http://dx.doi.org/10.5311/JOSIS.2015.11.225 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83770 [article]