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scientifique

Map design aspects, route complexity, or social background? Factors influencing user satisfaction with indoor navigation maps / Alexandra Lorenz in Cartography and Geographic Information Science, vol 40 n° 3 (June 2013)  

Public [article]  inCartography and Geographic Information Science > vol 40 n° 3 (June 2013) . - pp 201 - 209 Titre : Map design aspects, route complexity, or social background? Factors influencing user satisfaction with indoor navigation maps Type de document : Article/Communication Auteurs : Alexandra Lorenz, Auteur ; Cornelia Thierbach, Auteur ; Nina Baur, Auteur ; Thomas Kolbe, Auteur Année de publication : 2013 Article en page(s) : pp 201 - 209 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique [Termes IGN] analyse de variance [Termes IGN] carte d'intérieur [Termes IGN] conception cartographique [Termes IGN] évaluation [Termes IGN] navigation pédestre [Termes IGN] utilisateur Résumé : (Auteur) Indoor map design is still an uncharted territory. More often than not, existing architectural floor plans are used as visualization means that do not fulfill cartographic requirements. In collaboration between geoinformation science and sociology, we develop and investigate cartographic methods for effective route guidance in indoor environments. The baseline for our evaluation is the annual user studies with up to 1100 participants per year. Since 2009, they were conducted during the “Long Night of Sciences,” a big event where large scientific institutions present themselves to the general public. For the 2011 study, we developed eight maps, which varied in design with respect to two map properties: map perspective and landmark representation. We evaluated the map design features as well as route complexity and sociodemographic characteristics. In order to rate their effect on an user satisfaction as an indicator of navigational success, we carried out a series of analyses of variance. Our results underline the importance of a map design: Map perspective and landmarks alone explain about 30% of the variance in the user satisfaction with maps, which is by far the biggest share in a navigational success. Numéro de notice : A2013-753 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2013.807029 En ligne : https://doi.org/10.1080/15230406.2013.807029 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32889 [article]

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A deterministic method to integrate triangular meshes of different resolution / Giorgio Agugiaro in ISPRS Journal of photogrammetry and remote sensing, vol 71 (July 2012)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 71 (July 2012) . - pp 96 - 109 Titre : A deterministic method to integrate triangular meshes of different resolution Type de document : Article/Communication Auteurs : Giorgio Agugiaro, Auteur ; Thomas Kolbe, Auteur Année de publication : 2012 Article en page(s) : pp 96 - 109 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] cohérence géométrique [Termes IGN] données hétérogènes [Termes IGN] données laser [Termes IGN] données localisées 3D [Termes IGN] intégration de données [Termes IGN] maillage par triangles [Termes IGN] modèle numérique de surface [Termes IGN] modèle numérique de terrain [Termes IGN] Triangulated Irregular Network Résumé : (Auteur) As a result of new sensors and methodologies that allow for faster and more accurate data acquisition, the production of highly detailed 3D models is becoming part of the standard workflow in many disciplines – architecture, cultural heritage, urban planning, and others. At the same time, new related problems have emerged concerning the management of the resulting large datasets and the integration of data coming from different sources. Data integration among heterogeneous datasets can lead to a variety of errors, and the reasons for these errors are multiple including geometric, topological or semantic incompatibilities, different resolutions and accuracies, and data acquired at different times. To overcome such errors, the integration of heterogeneous datasets requires appropriate homogenisation techniques. This article presents a new deterministic approach for the integration of a high resolution surface model and a lower resolution surface model, both given as triangular meshes embedded in 3D space, by means of a transition surface. The method can be applied after both datasets have been aligned. The derivation of the transition surface exploits extra data that are typically available in the high resolution model. These extra data (e.g. quite common when using a laser scanner) must be 2.5D and located around the high resolution model, they represent a sort of planimetric buffer around the high resolution object that can be thought as a “collar”. The proposed method generates a geometrically and topologically sound and continuous 2.5D surface that integrates the two models using the data contained in the collar. It takes into account the different quality aspects of the low and high resolution models such as point height, point density, and height gradient, and then creates a transition surface that interpolates these aspects between the embedded high resolution model and the surrounding low resolution model. The article also presents some experimental results, obtained from real datasets, and concludes with some remaining issues and possible improvements to the method. Numéro de notice : A2012-351 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.05.005 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.05.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31797 [article]

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