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Linear building pattern recognition in topographical maps combining convex polygon decomposition / Zhiwei Wei in Geocarto international, vol 38 n° inconnu ([01/01/2023])  

Public [article]  inGeocarto international > vol 38 n° inconnu [01/01/2023] Titre : Linear building pattern recognition in topographical maps combining convex polygon decomposition Type de document : Article/Communication Auteurs : Zhiwei Wei, Auteur ; Su Ding, Auteur ; Lu Cheng, Auteur ; et al., Auteur Année de publication : 2023 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] carte topographique [Termes IGN] construction [Termes IGN] décomposition [Termes IGN] détection du bâti [Termes IGN] forme linéaire [Termes IGN] généralisation cartographique automatisée [Termes IGN] Ordnance Survey (UK) [Termes IGN] polygone [Termes IGN] reconnaissance de formes Résumé : (auteur) Building patterns are crucial for urban form understanding, automated map generalization, and 3 D city model visualization. The existing studies have recognized various building patterns based on visual perception rules in which buildings are considered as a whole. However, some visually aware patterns may fail to be recognized with these approaches because human vision is also proved as a part-based system. This paper first proposed an approach for linear building pattern recognition combining convex polygon decomposition. Linear building patterns including collinear patterns and curvilinear patterns are defined according to the proximity, similarity, and continuity between buildings. Linear building patterns are then recognized by combining convex polygon decomposition, in which a building can be decomposed into sub-buildings for pattern recognition. A novel node concavity is developed based on polygon skeletons which is applicable for building polygons with holes or not in the building decomposition. And building’s orthogonal features are also considered in the building decomposition. Two datasets collected from Ordnance Survey (OS) were used in the experiments to verify the effectiveness of the proposed approach. The results indicate that our approach achieves 25.57% higher precision and 32.23% higher recall in collinear pattern recognition and 15.67% higher precision and 18.52% higher recall in curvilinear pattern recognition when compared to existing approaches. Recognition of other kinds of building patterns including T-shaped and C-shaped patterns combining convex polygon decomposition are also discussed in this approach. Numéro de notice : A2022-263 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/10106049.2022.2055794 Date de publication en ligne : 27/03/2022 En ligne : https://doi.org/10.1080/10106049.2022.2055794 Format de la ressource électronique : 27/03/2022 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=100260 [article]

Matching disparate geospatial datasets and validating matches using spatial logic / Heshan Du (2015)

Public Titre : Matching disparate geospatial datasets and validating matches using spatial logic Type de document : Thèse/HDR Auteurs : Heshan Du, Auteur ; Natasha Alechina, Directeur de thèse ; M.J. Jackson, Directeur de thèse Editeur : Nottingham : University of Nottingham Année de publication : 2015 Importance : 211 p. Note générale : Bibliographie Thesis submitted to the University of Nottingham for the degree of Doctor of Philosophy Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] appariement de données localisées [Termes IGN] appariement géométrique [Termes IGN] cartographie collaborative [Termes IGN] cohérence des données [Termes IGN] données localisées de référence [Termes IGN] données localisées des bénévoles [Termes IGN] données vectorielles [Termes IGN] intégration de données [Termes IGN] jeu de données localisées [Termes IGN] ontologie [Termes IGN] OpenStreetMap [Termes IGN] Ordnance Survey (UK) [Termes IGN] relation topologique [Termes IGN] zone tampon Résumé : (auteur) In recent years, the emergence and development of crowd-sourced geospatial data has provided challenges and opportunities to national mapping agencies as well as commercial mapping organisations. Crowd-sourced data involves non-specialists in data collection, sharing and maintenance. Compared to authoritative geospatial data, which is collected by surveyors or other geodata professionals, crowd-sourced data is less accurate and less structured, but often provides richer user-based information and reflects real world changes more quickly at a much lower cost. In order to maximize the synergistic use of authoritative and crowd-sourced geospatial data, this research investigates the problem of how to establish and validate correspondences (matches) between spatial features from disparate geospatial datasets. To reason about and validate matches between spatial features, a series of new qualitative spatial logics was developed. Their soundness, completeness, decidability and complexity theorems were proved for models based on a metric space. A software tool `MatchMaps' was developed, which generates matches using location and lexical information, and verifies consistency of matches using reasoning in description logic and qualitative spatial logic. MatchMaps was evaluated by the author and experts from Ordnance Survey, the national mapping agency of Great Britain. In experiments, it achieved high precision and recall, as well as reduced human effort. The methodology developed and implemented in MatchMaps has a wider application than matching authoritative and crowd-sourced data and could be applied wherever it is necessary to match two geospatial datasets of vector data. Note de contenu : 1. Introduction 1.1. Research Question 1.2. Research Aim and Objectives 1.3. Contributions and Structure of the Thesis 2. Context of Research 2.1. Development of Crowd-sourced Geospatial Data 2.2. Quality of OpenStreetMap Data 2.3. Usability of OpenStreetMap Data 3. Litterature Review 3.1. Geospatial Data Matching 3.2. Ontology Matching 3.3. Spatial Logic 4. A Framework for Integrating Geospatial Datasets 4.1. Building up the Framework 4.2. Rationale of the Framework 4.3. MatchMaps: an Implemented System 5. Matching Spatial Features 5.1. Theoretical Basis for Matching Geometries 5.2. Matching Geometries 5.3. Matching Spatial Objects 6. Validating Matches using Description Logic 6.1. Description Logic ALCO 6.2. Validationg Terminology Matches using Description Logic 6.3. Validating Object Matches using Description Logic 7. A Logic of NEAR and FAR for Buffered Points 7.1. Syntax, Semantics and Axioms of LNF 7.2. Soundness and Completeness of LNF 7.3. Decidability and Complexity of LNF 7.4. Interpreting L(LNF) in R² 8. A Logic of NEAR and FAR for Buffered Geometries 8.1. Syntax, Semantics and Axioms of LNFS 8.2. Soundness and Completeness of LNFS 8.3. Decidability and Complexity of LNFS 8.4. Interpreting L(LNFS) in R² 9. A Logic of Part and Whole for Buffered Geometries 9.1. Syntax, Semantics and Axioms of LBPT 9.2. Soundness and Completeness of LBPT 9.3. Decidability and Complexity of LBPT 9.4. Interpreting L(LBPT) in R² 10. Validating Matches using Qualitative spatial Logic 10.1. Validating Matches using LNF, LNFS ans LBPT 10.2. Actions for Retracting Problematic Matches 11. Evaluation and Discussion 11.1. Developer Evaluation of MatchMaps 11.2. User Evaluation of MatchMaps 11.3. Discussion 12. Conclusion and Future Work 12.1. Conclusion 12.2. Future Work Numéro de notice : 19794 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Thèse étrangère Note de thèse : PhD thesis : : Nottingham : 2015 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85041

Using qualitative spatial logic for validating crowd-sourced geospatial data / Heshan Du (2015)    

Public Titre : Using qualitative spatial logic for validating crowd-sourced geospatial data Type de document : Article/Communication Auteurs : Heshan Du, Auteur ; Hai Hoang Nguyen, Auteur ; Natasha Alechina, Auteur ; Brian Logan, Auteur ; Mike Jackson, Auteur ; John Goodwin, Auteur Editeur : Nottingham : University of Nottingham Année de publication : 2015 Conférence : IAAI 2015, 27th conference on Innovative Applications of Artificial Intelligence 25/01/2015 29/01/2015 Austin Texas - Etats-Unis open access proceedings Importance : 7 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] appariement de données localisées [Termes IGN] cohérence des données [Termes IGN] données localisées [Termes IGN] données localisées de référence [Termes IGN] données localisées des bénévoles [Termes IGN] logique [Termes IGN] Ordnance Survey (UK) Résumé : (auteur) We describe a tool, MatchMaps, that generates sameAs and partOf matches between spatial objects (such as shops, shopping centres, etc.) in crowd-sourced and authoritative geospatial datasets. MatchMaps uses reasoning in qualitative spatial logic, description logic and truth maintenance techniques, to produce a consistent set of matches. We report the results of an initial evaluation of MatchMaps by experts from Ordnance Survey (Great Britain's National Mapping Authority). In both the case studies considered, MatchMaps was able to correctly match spatial objects (high precision and recall) with minimal human intervention. Numéro de notice : C2015-054 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication DOI : sans En ligne : https://www.aaai.org/ocs/index.php/IAAI/IAAI15/paper/view/9687/9896 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85127

Documents numériques

en open access Using qualitative spatial logic Adobe Acrobat PDF

The military map of the United Kingdom and its impact on mapping in the twentieth century / Peter Collier in Cartographic journal (the), vol 50 n° 4 (November 2013)  

Public [article]  inCartographic journal (the) > vol 50 n° 4 (November 2013) . - pp 324 - 331 Titre : The military map of the United Kingdom and its impact on mapping in the twentieth century Type de document : Article/Communication Auteurs : Peter Collier, Auteur Année de publication : 2013 Article en page(s) : pp 324 - 331 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie ancienne [Termes IGN] carte militaire [Termes IGN] cartographie ancienne [Termes IGN] cartographie étrangère [Termes IGN] dix-neuvième siècle [Termes IGN] histoire de la cartographie [Termes IGN] Ordnance Survey (UK) [Termes IGN] représentation cartographique [Termes IGN] Royaume-Uni [Termes IGN] style cartographique [Termes IGN] vingtième siècle Résumé : (Auteur) Considerable attention has been paid in the literature to the changing style of Ordnance Survey mapping in the twentieth century. However, little has been written about the origins of the characteristic appearance of the first multi-colour editions, other that the Ordnance Survey used a military edition that was already in production. The distinctive style grew out of the work of a committee established in 1892 by the War Office to consider future army requirements for a map of the UK. This paper explores the work of the committee and its long-term implications for the look of mapping in the twentieth century. Numéro de notice : A2013-684 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000023 En ligne : https://doi.org/10.1179/1743277412Y.0000000023 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32820 [article]

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National importance / C. Mccormack in GEO: Geoconnexion international, vol 12 n° 3 (march 2013)

Public [article]  inGEO: Geoconnexion international > vol 12 n° 3 (march 2013) . - pp 26 - 27 Titre : National importance Type de document : Article/Communication Auteurs : C. Mccormack, Auteur Année de publication : 2013 Article en page(s) : pp 26 - 27 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] données localisées des bénévoles [Termes IGN] géomatique web [Termes IGN] Ordnance Survey (UK) [Termes IGN] organisme cartographique national [Termes IGN] Royaume-Uni [Termes IGN] SIG nomade Résumé : (Editeur) Mobile GIS and apps give national mapping agencies a new chance to become providers of choice to developers. Ordnance Survey's Chris McCormack explains how the organisation developed OS mapfinder and what it's doing to offer its services to third-parties. Numéro de notice : A2013-102 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32240 [article]

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Flying the Ultracam XP [in Great Britain] / Mark Tabor in GEO: Geoconnexion international, vol 10 n° 9 (october 2011)

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The Ordnance Survey OpenData initiative / B. Lilley in Cartographic journal (the), vol 48 n° 3 (August 2011)  

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Développer sa maquette 3D territoriale : quelle méthode pour quel résultat ? / Vincent Habchi in Géomatique expert, n° 73 (01/02/2010)

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Connection of French and British levelling networks : application to UELN / Paul Rebischung (01/12/2009)  

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vol 45 n° 3 - August 2008 - From geovisualisation toward geovisual analytics (Bulletin de Cartographic journal (the)) / British cartographic society

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Geomatics or geomagic ? Part 2 The height datum / D. Philip in Geomatic world, vol 16 n° 4 (01/07/2008)

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Geomatics or geomagic ? Part 1 / D. Philip in Geomatic world, vol 16 n° 4 (01/05/2008)

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Representing forested regions at small scales: automatic derivation from very large scale data / William A Mackaness in Cartographic journal (the), vol 45 n° 1 (February 2008)  

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La cartographie à l'Ordnance Survey : héritage et défis / Nicolas Regnauld in Le monde des cartes, n° 193 (septembre - novembre 2007)

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Automatic amalgation of buildings for producing Ordnance Survey 1: 50000 scale maps / Nicolas Regnauld in Cartographic journal (the), vol 44 n° 3 (August 2007)  

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