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Quality assessment and accessibility mapping in an image-based geocrowdsourcing testbed / Matthew T. Rice in Cartographica, vol 53 n° 1 (Spring 2018)
[article]
Titre : Quality assessment and accessibility mapping in an image-based geocrowdsourcing testbed Type de document : Article/Communication Auteurs : Matthew T. Rice, Auteur ; Dan Jacobson, Auteur ; Dieter Pfoser, Auteur ; Kevin M. Curtin, Auteur ; Han Qin, Auteur ; et al., Auteur Année de publication : 2018 Article en page(s) : pp 1 - 14 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] accessibilité
[Termes IGN] données localisées des bénévoles
[Termes IGN] handicap
[Termes IGN] production participative
[Termes IGN] qualité des donnéesRésumé : (Auteur) Geocrowdsourcing is a significant new focus area in mapping for people with disabilities. It utilizes public data contributions that are difficult to capture with traditional mapping workflows. Along with the benefits of geocrowdsourcing are critical drawbacks, including reliability and accuracy. A geocrowdsourcing testbed has been designed to explore the dynamics of geocrowdsourcing and quality assessment and produce temporally relevant navigation obstacle data. These reports are then used for route planning, obstacle avoidance, and spatial awareness. Recently, the geocrowdsourcing testbed has been modified to focus on the contribution of images and short descriptions, rather than the more lengthy previous reporting process. The quality assessment workflow of the geocrowdsourcing testbed is contrasted with a modified quality assessment workflow, implemented in the simpler and quicker image-based reporting paradigm. General quality assessment of data position and temporal characteristics is still possible, while general data attributes and detail are now supplied by a moderator from the contributed image. The derivation of obstacle location from multiple intersected image direction vectors does not produce reliable results, but an approach using buffered convex hulls works dependably. This simpler, quicker geocrowdsourcing workflow produces geocrowdsourced obstacle data and quality assessment estimates for location, time, and attribute accuracy. Numéro de notice : A2018-206 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3138/cart.53.1.2017-0013 Date de publication en ligne : 21/03/2018 En ligne : https://doi.org/10.3138/cart.53.1.2017-0013 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89922
in Cartographica > vol 53 n° 1 (Spring 2018) . - pp 1 - 14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 031-2018011 SL Revue Centre de documentation Revues en salle Disponible Position validation in crowdsourced accessibility mapping / Rebecca M. Rice in Cartographica, vol 51 n° 2 (Summer 2016)
[article]
Titre : Position validation in crowdsourced accessibility mapping Type de document : Article/Communication Auteurs : Rebecca M. Rice, Auteur ; Ahmad O. Aburizaiza, Auteur ; Matthew T. Rice, Auteur ; Han Qin, Auteur Année de publication : 2016 Article en page(s) : pp 55 - 66 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] accessibilité
[Termes IGN] carte thématique
[Termes IGN] cohérence des données
[Termes IGN] données localisées des bénévoles
[Termes IGN] géobalise
[Termes IGN] handicap
[Termes IGN] mesure de la qualité
[Termes IGN] mise à jour
[Termes IGN] personne non-voyante
[Termes IGN] précision de localisation
[Termes IGN] qualité des données
[Termes IGN] validation des donnéesRésumé : (Auteur) We live in a society in which instant gratification is expected: we demand constantly up-to-date information, which is reflected in our reliance on maps for navigation. Volunteered geographical information (VGI) and geocrowdsourcing make this demand attainable, with popular examples being Waze and OpenStreetMap, where maps are updated quickly by citizen contributors with current base data and features. At George Mason University (in Fairfax, Virginia), the Office of Disability Services releases a traditional paper accessibility map once annually. Owing to its production methods and format, this accessibility map does not capture the transient obstacles that occur frequently throughout campus, rendering it less useful to disabled pedestrians. To fix this dilemma and establish a more useful accessibility system, we have created an application in which contributors report transient obstacles that may impede pedestrian navigation, including sidewalk obstructions, construction detours, and other obstacles that may affect pathway walkability. One of the concerns associated with VGI and geocrowdsourced information is quality assurance, which is imperative when the usage scenarios (including blind, visually impaired, and mobility-impaired navigation) depend on positional accuracy. This study attempts to address the concerns related to the quality assurance of VGI, specifically quality assessment of the positional accuracy of the geocrowdsourced spatial data. We present our quality assessment techniques and novel methods for assessing the consistency of positional characteristics of geocrowdsourced spatial data related to accessibility. These methods rely on moderated positional assessments, geotags extracted from contributed images, and gazetteer-based geoparsing of location descriptions. Finally, we base our methods and approaches on research contributions and best practices from past and current efforts in accessibility mapping. Numéro de notice : A2016-479 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/cart.51.2.3143 En ligne : http://dx.doi.org/10.3138/cart.51.2.3143 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81493
in Cartographica > vol 51 n° 2 (Summer 2016) . - pp 55 - 66[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 031-2016021 RAB Revue Centre de documentation En réserve L003 Disponible Exploring alternative map products to enhance transportation option awareness / Jessica V. Fayne in Cartography and Geographic Information Science, Vol 42 n° 4 (September 2015)
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Titre : Exploring alternative map products to enhance transportation option awareness Type de document : Article/Communication Auteurs : Jessica V. Fayne, Auteur ; Sven Fuhrmann, Auteur ; Matthew T. Rice, Auteur ; Rebecca M. Rice, Auteur Année de publication : 2015 Article en page(s) : pp 345 - 357 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] accessibilité
[Termes IGN] carte thématique
[Termes IGN] cartographie des flux
[Termes IGN] gestion de trafic
[Termes IGN] trafic routier
[Termes IGN] transport publicRésumé : (Auteur) The steady increase in automotive vehicle usage in highly populated areas, leading to intensified traffic, suggests the need for new approaches to traffic management and commuting options. Maps as communication products might hold one key to unlocking guided alternative mode choices as standalone products and as service components. However, traditional paper and web-based maps might lack properties and affordances that will guide users to consider alternative commuting opportunities. Through careful determination of content, use and media, our research group assesses the emotional, visual and tactile properties of map affordances to create novel transportation maps. With future user testing and modification, transportation map alternatives could enable and encourage commuters to explore transportation alternatives and select a mode of transportation that is suitable for the changing landscape in commuting and mass transportation. Numéro de notice : A2015-516 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2015.1053826 En ligne : https://doi.org/10.1080/15230406.2015.1053826 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77715
in Cartography and Geographic Information Science > Vol 42 n° 4 (September 2015) . - pp 345 - 357[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-2015041 RAB Revue Centre de documentation En réserve L003 Disponible Crowdsourcing techniques for augmenting traditional accessibility maps with transitory obstacle information / Matthew T. Rice in Cartography and Geographic Information Science, vol 40 n° 3 (June 2013)
[article]
Titre : Crowdsourcing techniques for augmenting traditional accessibility maps with transitory obstacle information Type de document : Article/Communication Auteurs : Matthew T. Rice, Auteur ; R. Daniel Jacobson, Auteur ; Douglas R. Caldwell, Auteur ; Scott D. Mcdermott, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 210 - 219 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie
[Termes IGN] accessibilité
[Termes IGN] acquisition de données
[Termes IGN] bibliothèque numérique
[Termes IGN] carte tactile
[Termes IGN] détail topographique
[Termes IGN] navigation pédestre
[Termes IGN] production participative
[Termes IGN] répertoire toponymiqueRésumé : (Auteur) One of the most scrutinized contemporary techniques for geospatial data collection and production is crowdsourcing. This inverts the traditional top-down geospatial data production and distribution methods by emphasizing on the participation of the end user or community. The technique has been shown to be particularly useful in the domain of accessibility mapping, where it can augment traditional mapping methods and systems by providing information about transitory obstacles in the built environment. This research paper presents details of techniques and applications of crowdsourcing and related methods for improving the presence of transitory obstacles in accessibility mapping systems. The obstacles are very difficult to incorporate with any other traditional mapping workflow, since they typically appear in an unplanned manner and disappear just as quickly. Nevertheless, these obstacles present a major impediment to navigating an unfamiliar environment. Fortunately, these obstacles can be reported, defined, and captured through a variety of crowdsourcing techniques, including gazetteer-based geoparsing and active social media harvesting, and then referenced in a crowdsourced mapping system. These techniques are presented, along with context from research in tactile cartography and geo-enabled accessibility systems. Numéro de notice : A2013-754 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article DOI : 10.1080/15230406.2013.799737 En ligne : https://doi.org/10.1080/15230406.2013.799737 Format de la ressource électronique : url Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32890
in Cartography and Geographic Information Science > vol 40 n° 3 (June 2013) . - pp 210 - 219[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-2013031 RAB Revue Centre de documentation En réserve L003 Disponible