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A new model for cadastral surveying using crowdsourcing / K. Apostolopoulos in Survey review, vol 50 n° 359 (March 2018)  

Public [article]  inSurvey review > vol 50 n° 359 (March 2018) . - pp 122 - 133 Titre : A new model for cadastral surveying using crowdsourcing Type de document : Article/Communication Auteurs : K. Apostolopoulos, Auteur ; M. Geli, Auteur ; P. Petrelli, Auteur ; Chryssy Potsiou, Auteur ; C. Ioannidis, Auteur Année de publication : 2018 Article en page(s) : pp 122 - 133 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] ArcGIS [Termes IGN] banlieue [Termes IGN] cadastre étranger [Termes IGN] données localisées des bénévoles [Termes IGN] Grèce [Termes IGN] jeu [Termes IGN] périphérie urbaine [Termes IGN] production participative [Termes IGN] zone rurale [Termes IGN] zone urbaine Résumé : (auteur) A ‘fit-for-purpose’ approach is developed, tested and presented for cadastral surveys through increased owners’ participation using new technology and m-government services. Three case studies are reported, for urban, suburban and rural areas, with a combined use of two mobile applications: a commercial software package (ESRI’s Collector for ArcGIS) and an opensource self-developed application named BoundGeometry. The parameters of time, quality and accuracy are assessed and the identified difficulties are classified. It is concluded that the method is applicable both in developed and developing countries, and each time adjustable to the available infrastructure. Numéro de notice : A2018-179 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article DOI : 10.1080/00396265.2016.1253522 Date de publication en ligne : 15/11/2016 En ligne : https://doi.org/10.1080/00396265.2016.1253522 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89823 [article]

Enhancing cadastral surveys by facilitating the participation of owners / G. Mourafetis in Survey review, vol 47 n° 344 (September 2015)  

Public [article]  inSurvey review > vol 47 n° 344 (September 2015) . - pp 316 - 324 Titre : Enhancing cadastral surveys by facilitating the participation of owners Type de document : Article/Communication Auteurs : G. Mourafetis, Auteur ; K. Apostolopoulos, Auteur ; Chryssy Potsiou, Auteur ; C. Ioannidis, Auteur Année de publication : 2015 Conférence : FIG 2014, Commission 3 Annual Workshop, Geospatial Crowdsourcing and VGI: Establishment of SDI & SIM 04/11/2014 07/11/2014 Bologne Italie Article en page(s) : pp 316 - 324 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cadastre étranger [Termes IGN] acquisition de données [Termes IGN] approche participative [Termes IGN] base de données foncières [Termes IGN] données localisées des bénévoles [Termes IGN] Grèce [Termes IGN] mise à jour de base de données [Termes IGN] orthoimage [Termes IGN] production participative Résumé : (auteur) While some countries have over centuries developed a nation-wide spatial framework, some others have been left behind. However, because of the global economic and social challenges, there is an urgent need for those countries to develop similar systems in a fast and efficient way for their economic survival. Building such a framework should be always based on each country's resources and capacities. In systematic cadastral registrations, the participation of owners has always been crucial for the success of the project. Within this concept, the authors investigate the potential of new tools to increase the participation of land right holders and local volunteers (non-professionals) and to enhance the cadastral surveying procedure. A hybrid “crowdsourcing” approach is proposed, mainly based on the direct participation of property rights holders in which the role of the cadastral surveyor is crucial. A commercial application for smartphones is tested. The smartphone's GPS is used only for the general positioning on the basemap to avoid gross errors when owners are not accustomed in using aerial photos. A recent orthoimage of 20 cm pixel size in urban areas and an orthoimage basemap of 50 cm pixel size in rural areas is used as the basemap. Once roughly positioned, owners may then digitise the boundary coordinates on the basemap off-line, with little training support; they may also work from a distance. In areas where the property boundaries are easily recognised on the basemap, boundary coordinates have the expected geometric accuracy that can be achieved on the basemap while no gross errors are detected. Attachment of photos is also possible (e.g. photos of the property or of the deeds). Restricted access to personal data may also be achieved. The method is also useful for cadastre updating purposes (e.g. the periodic updating of buildings database). Numéro de notice : A2015-915 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1179/1752270615Y.0000000009 En ligne : https://doi.org/10.1179/1752270615Y.0000000009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79703 [article]

Automatic ICP-based global matching of free-form linear features / D. Vassilaki in Photogrammetric record, vol 27 n° 139 (September - November 2012)  

Public [article]  inPhotogrammetric record > vol 27 n° 139 (September - November 2012) . - pp 311 - 329 Titre : Automatic ICP-based global matching of free-form linear features Type de document : Article/Communication Auteurs : D. Vassilaki, Auteur ; C. Ioannidis, Auteur ; A. Stamos, Auteur Année de publication : 2012 Article en page(s) : pp 311 - 329 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] algorithme ICP [Termes IGN] appariement géométrique [Termes IGN] géoréférencement [Termes IGN] ligne caractéristique [Termes IGN] objet géographique linéaire Résumé : (Auteur) The geometric exploitation of linear features has been investigated in various remote sensing and geospatial problems. This paper introduces a novel and general method based on the iterative closest point (ICP) algorithm for the global matching of heterogeneous free-form linear features of the same (2D–2D, 3D–3D), or different, (2D–3D) dimensionality. No constraints are imposed either on the transformation, the projection type or on the geometric nature of the features. The method assumes no prior knowledge of the relative position of the features, or of point correspondences, and is tested with various simulated and real-world heterogeneous data. Numéro de notice : A2012-464 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2012.00692.x Date de publication en ligne : 18/09/2012 En ligne : https://doi.org/10.1111/j.1477-9730.2012.00692.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31910 [article]

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Structured Light Scanners: Working Principles, Performance and Accuracy / A. Georgopoulos in GIM international, vol 25 n° 2 (February 2011)

Public [article]  inGIM international > vol 25 n° 2 (February 2011) . - 3 p. ; pp 25 - 27 Titre : Structured Light Scanners: Working Principles, Performance and Accuracy Type de document : Article/Communication Auteurs : A. Georgopoulos, Auteur ; C. Ioannidis, Auteur ; A. Valanis, Auteur Année de publication : 2011 Article en page(s) : 3 p. ; pp 25 - 27 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] télémètre laser terrestre [Termes IGN] test de performance Résumé : (Auteur) Laser technology is the flagship for producing accurate digital 3D representations of objects, but other techniques are also widely used, one of which is structured light scanning. The authors discuss the characteristics of this accurate measuring technique, used primarily for indoor, close-range applications. They also tested a commercially available structured light camera and found the accuracy in line with the manufacturer’s claim of 50 micrometres. Numéro de notice : A2011-038 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30819 [article]

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061-2011021	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Simple method for cost-effective informal building monitoring / C. Psaltis in SaLIS Surveying and land information science, vol 68 n° 2 (June 2008)

Public [article]  inSaLIS Surveying and land information science > vol 68 n° 2 (June 2008) . - pp 65 - 79 Titre : Simple method for cost-effective informal building monitoring Type de document : Article/Communication Auteurs : C. Psaltis, Auteur ; C. Ioannidis, Auteur Année de publication : 2008 Article en page(s) : pp 65 - 79 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] coût [Termes IGN] détection de changement [Termes IGN] détection du bâti [Termes IGN] Grèce [Termes IGN] impact sur l'environnement [Termes IGN] surveillance de l'urbanisation Résumé : (Auteur) Unplanned development and informal settlements are typical characteristics of megacities not only in developing countries but also in many developed countries, and they have considerable impact on the environment and on multiple human activities. Thus, development of an automated, robust, cost-effective, and quick procedure for informal building monitoring is of great value. This paper introduces a simple strategy based on a change detection algorithm intended for application in Greece. Several internally published methods for change detection are presented prior to presenting the proposed strategy. The results of two application tests in the greater area of Athens in the Attica region of Greece are presented and compared with the results of the commercial package, Feature Analyst™. The results of the proposed application are discussed and further research is proposed. Copyright SaLIS Numéro de notice : A2008-330 Affiliation des auteurs : non IGN Thématique : IMAGERIE/URBANISME Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83660 [article]

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An integrated spatial information system for the development of the archeological site of Mycenae / C. Ioannidis (2003)  

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