Centre de documentation
scientifique

Effects of cartographic elevation visualizations and map-reading tasks on eye movements / Katja Putto in Cartographic journal (the), vol 51 n° 3 (August 2014)  

Public [article]  inCartographic journal (the) > vol 51 n° 3 (August 2014) . - pp. 225–236 Titre : Effects of cartographic elevation visualizations and map-reading tasks on eye movements Type de document : Article/Communication Auteurs : Katja Putto, Auteur ; Pyry Kettunen, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp. 225–236 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique [Termes IGN] estompage [Termes IGN] étude d'impact [Termes IGN] lecture de carte [Termes IGN] représentation cartographique [Termes IGN] représentation du relief Résumé : (Auteur) Users prefer more realistic visualizations, even though they may be less efficient or even detrimental for a given task. In some previous studies, the evidence has shown that relief shading facilitates the landform interpretation while other studies have provided contrary results. In the present study, the effect of three different visualizations of elevation information on eye movements and performance was investigated in visual search, area selection, and route planning tasks. The results showed that the visualization of relief information affected the performance and eye movements in the visual search task. Overall, the eye movements differed between the search and area selection tasks, as well as between the search and route planning tasks. The result showed that the relief shading did not slow down the performance, either in terms of response time or eye movement measures. Numéro de notice : A2014-450 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277414Y.0000000087 En ligne : https://doi.org/10.1179/1743277414Y.0000000087 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74005 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
030-2014031	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Analysing landmarks in nature and elements of geospatial images to support wayfinding / Pyry Kettunen (2014)  

Public Titre : Analysing landmarks in nature and elements of geospatial images to support wayfinding Type de document : Thèse/HDR Auteurs : Pyry Kettunen, Auteur Editeur : Helsinki : Finnish Geodetic Institute FGI Année de publication : 2014 Collection : Publications of the Finnish Geodetic Institute, ISSN 0085-6932 num. 155 Importance : 150 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-951-711-312-0 Note générale : bibliographie Doctoral dissertation for the degree of Doctor of Science in Technology (Doctor of Philosophy) to be presented with due permission of the School of Engineering for public examination and debate in Auditorium M1 at the Aalto University School of Engineering (Espoo, Finland) on the 4th of October 2014 at 12 noon. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] carte en 3D [Termes IGN] croquis topographique [Termes IGN] oculométrie [Termes IGN] point de repère [Termes IGN] signalisation routière Mots-clés libres : landmark  wayfinding  spatial knowledge  perception  recall  route  nature  geospatial image  3D map  elevation  eye tracking Résumé : (auteur) This dissertation applies the research and methods of spatial cognition in order to contribute to the development of wayfinding support in geospatial applications. The design and development of geospatial applications, such as interactive maps and mobile navigation applications, has been typically founded on the expertise of surveying, cartography and geoinformatics. This has often led to relatively complex expert tools that many users find difficult to use. The research of spatial cognition can provide elementary understanding about human thinking in the use situations of these applications and supplement the knowledge gained using the usability research. Perception of landmarks along routes in nature was studied in season and time-of-day studies with participants who walked nature trails in summer, winter, day and night while thinking aloud about the surroundings. The recall of the route was measured afterwards using sketch-map drawing and photo recognition tasks. The think-aloud protocols were analysed using classification of propositions and natural language processing. The importance of landmarks for the human route perception in nature was confirmed. “Structures”, “Passages” and “Waters” were the most perceived landmark groups. Season and time-of-day significantly affected landmark perception and, based on the results, the adaptivity of geospatial applications in the studied conditions can be improved. The transfer of the empirically acquired knowledge of the landmark perception to geoinformatics was illustrated with a formal landmark ontology for hiking in nature. The measures of landmark recall were found unexpectedly similar in all the studied conditions. The similarity was explained by the salience of landmarks in nature and the structure of route-like sketch maps but also by the participants’ conceptions on what should be drawn on maps. “Passages” and “Structures” were the most-often drawn landmark groups on the sketch maps. Support of geospatial images for wayfinding was evaluated using a literaturebased evaluation framework. Visualisation of elevation was experimented with by rendering a 3D map, a derivative of which was compared to 2D elevation visualisations in an eye-tracking study. Vertical elements and elevation were found to be central wayfinding elements in geo-images and the aerial oblique vantage point the most effective image parameter for transferring spatial knowledge. The rendered 3D map was evaluated as cognitively demanding to look at but, however, showed potential in representing the terrain relief. The dissertation also considers challenges in the application of the methods of spatial cognition research and identifies directions for future studies. Note de contenu : 1. Introduction 2. Literature review 3. Methods 4. Results 5. Discussion and conclusions Numéro de notice : 14878 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère Note de thèse : PhD thesis : Science in Technology : Aalto University School of Engineering : 2014 En ligne : https://aaltodoc.aalto.fi/handle/123456789/14049 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75988