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Equivalent constraints for two-view geometry : Pose solution/pure rotation identification and 3D reconstruction / Qi Cai in International journal of computer vision, vol 127 n° 2 (February 2019)
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Titre : Equivalent constraints for two-view geometry : Pose solution/pure rotation identification and 3D reconstruction Type de document : Article/Communication Auteurs : Qi Cai, Auteur ; Yuanxin Wu, Auteur ; Lilian Zhang, Auteur ; Peike Zhang, Auteur Année de publication : 2019 Article en page(s) : pp 163 - 180 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] coplanarité
[Termes IGN] estimation de pose
[Termes IGN] programmation par contraintes
[Termes IGN] reconstruction 3DRésumé : (Auteur) Two-view relative pose estimation and structure reconstruction is a classical problem in computer vision. The typical methods usually employ the singular value decomposition of the essential matrix to get multiple solutions of the relative pose, from which the right solution is picked out by reconstructing the three-dimension (3D) feature points and imposing the constraint of positive depth. This paper revisits the two-view geometry problem and discovers that the two-view imaging geometry is equivalently governed by a Pair of new Pose-Only (PPO) constraints: the same-side constraint and the intersection constraint. From the perspective of solving equation, the complete pose solutions of the essential matrix are explicitly derived and we rigorously prove that the orientation part of the pose can still be recovered in the case of pure rotation. The PPO constraints are simplified and formulated in the form of inequalities to directly identify the right pose solution with no need of 3D reconstruction and the 3D reconstruction can be analytically achieved from the identified right pose. Furthermore, the intersection inequality also enables a robust criterion for pure rotation identification. Experiment results validate the correctness of analyses and the robustness of the derived pose solution/pure rotation identification and analytical 3D reconstruction. Numéro de notice : A2018-599 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s11263-018-1136-9 Date de publication en ligne : 30/11/2018 En ligne : https://doi.org/10.1007/s11263-018-1136-9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92526
in International journal of computer vision > vol 127 n° 2 (February 2019) . - pp 163 - 180[article]GeoTxt: A scalable geoparsing system for unstructured text geolocation / Morteza Karimzadeh in Transactions in GIS, vol 23 n° 1 (February 2019)
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Titre : GeoTxt: A scalable geoparsing system for unstructured text geolocation Type de document : Article/Communication Auteurs : Morteza Karimzadeh, Auteur ; Scott Pezanowski, Auteur ; Alan M. MacEachren, Auteur ; Jan Oliver Wallgrün, Auteur Année de publication : 2019 Article en page(s) : pp 118 - 136 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Informatique
[Termes IGN] analyse syntaxique
[Termes IGN] appariement de données localisées
[Termes IGN] corpus
[Termes IGN] données issues des réseaux sociaux
[Termes IGN] interface de programmation
[Termes IGN] méthode heuristique
[Termes IGN] reconnaissance de noms
[Termes IGN] répertoire toponymique
[Termes IGN] réseau sémantique
[Termes IGN] segmentation sémantique
[Termes IGN] toponyme
[Termes IGN] traitement du langage naturelRésumé : (auteur) In this article, we present GeoTxt, a scalable geoparsing system for the recognition and geolocation of place names in unstructured text. GeoTxt offers six named entity recognition (NER) algorithms for place name recognition, and utilizes an enterprise search engine for the indexing, ranking, and retrieval of toponyms, enabling scalable geoparsing for streaming text. GeoTxt offers a flexible application programming interface (API), allowing for customized attribute and/or spatial ranking of retrieved toponyms. We evaluate the system on a corpus of manually geo‐annotated tweets. First, we benchmark the performance of the six NERs that GeoTxt provides access to. Second, we assess GeoTxt toponym resolution accuracy incrementally, demonstrating improvements in toponym resolution achieved (or not achieved) by adding specific heuristics and disambiguation methods. Compared to using the GeoNames web service, GeoTxt's toponym resolution demonstrates a 20% accuracy gain. Our results show that places mentioned in the same tweet do not tend to be geographically proximate. Numéro de notice : A2019-091 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12510 Date de publication en ligne : 16/01/2019 En ligne : https://doi.org/10.1111/tgis.12510 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92238
in Transactions in GIS > vol 23 n° 1 (February 2019) . - pp 118 - 136[article]Smart cartographic background symbolization for map mashups in geoportals : A proof of concept by example of landuse representation / Nadia H. Panchaud in Cartographic journal (the), Vol 56 n° 1 (February 2019)
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Titre : Smart cartographic background symbolization for map mashups in geoportals : A proof of concept by example of landuse representation Type de document : Article/Communication Auteurs : Nadia H. Panchaud, Auteur ; Lorenz Hurni, Auteur Année de publication : 2019 Article en page(s) : pp 42 - 58 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] application composite
[Termes IGN] cartographie par internet
[Termes IGN] conception cartographique
[Termes IGN] géoportail
[Termes IGN] niveau de gris (image)
[Termes IGN] saturation de la couleur
[Termes IGN] sémiologie graphiqueRésumé : (Auteur) Geospatial data are now widely available to the general public thanks to geoportals and online mapping platforms. However, creating a map involves more than just combining data layers. Thus we develop cartographic functions for geoportals to support better visual hierarchy in user map mashups. This includes a couple of preparatory steps followed by a smart cartographic background symbolization derived from the original layer style. We evaluate different approaches to background symbolization: greyscale, desaturation, and smart background. The different background symbolization methods are analysed with two concrete map examples and evaluated with a survey. The smart background symbolization developed in this work improves the visual hierarchy of the map mashup by reducing the visual importance of the background layers. Numéro de notice : A2019-447 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2017.1414019 Date de publication en ligne : 16/11/2018 En ligne : https://doi.org/10.1080/00087041.2017.1414019 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92793
in Cartographic journal (the) > Vol 56 n° 1 (February 2019) . - pp 42 - 58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2019011 RAB Revue Centre de documentation En réserve L003 Disponible The orthographic projection model for pose calibration of long focal images / Laura F. Julià in IPOL Journal, Image Processing On Line, vol 9 (2019)
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Titre : The orthographic projection model for pose calibration of long focal images Type de document : Article/Communication Auteurs : Laura F. Julià, Auteur ; Pascal Monasse, Auteur ; Marc Pierrot-Deseilligny , Auteur
Année de publication : 2019 Projets : 1-Pas de projet / Article en page(s) : pp 232 - 250 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] estimation de pose
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] longueur focale
[Termes IGN] Matlab
[Termes IGN] modèle géométrique de prise de vue
[Termes IGN] projection orthographique
[Termes IGN] structure-from-motionRésumé : (auteur) Most stereovision and Structure from Motion (SfM) methods rely on the pinhole camera model based on perspective projection. From this hypothesis the fundamental matrix and the epipolar constraints are derived, which are the milestones of pose estimation. In this article we present a method based on the matrix factorization due to Tomasi and Kanade that relies on a simpler camera model, resulting in orthographic projection. This method can be used for the pose estimation of perspective cameras in configurations where other methods fail, in particular, when using cameras with long focal length lenses. We show this projection is an approximation of the pinhole camera model when the camera is far away from the scene. The performance of our implementation of this pose estimation method is compared to that given by the perspective-based methods for several configurations using both synthetic and real data. We show through some examples and experiments that the accuracy achieved and the robustness of this method make it worth considering in any SfM procedure. Numéro de notice : A2019-643 Affiliation des auteurs : LASTIG LOEMI (2012-2019) Thématique : IMAGERIE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5201/ipol.2019.248 Date de publication en ligne : 05/09/2019 En ligne : https://doi.org/10.5201/ipol.2019.248 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96175
in IPOL Journal, Image Processing On Line > vol 9 (2019) . - pp 232 - 250[article]
Titre : Agile processes in software engineering and extreme programming : Proceedings Type de document : Actes de congrès Auteurs : Philippe Kruchten, Éditeur scientifique ; Steven Fraser, Éditeur scientifique ; François Coallier, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2019 Conférence : XP 2019, 20th International Conference on Agile Software Development 21/05/2019 25/05/2019 Montréal Québec - Canada Importance : 264 p. Format : 16 x 24 cm ISBN/ISSN/EAN : 978-3-030-19034-7 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Langages informatiques
[Termes IGN] application informatique
[Termes IGN] génie logiciel
[Termes IGN] logiciel
[Termes IGN] méthode agile
[Termes IGN] programmation informatiqueRésumé : (éditeur) This open access book constitutes the proceedings of the 21st International Conference on Agile Software Development, XP 2020, which was planned to be held during June 8-12, 2020, at the IT University of Copenhagen, Denmark. However, due to the COVID-19 pandemic the conference was postponed until an undetermined date. XP is the premier agile software development conference combining research and practice. It is a hybrid forum where agile researchers, academics, practitioners, thought leaders, coaches, and trainers get together to present and discuss their most recent innovations, research results, experiences, concerns, challenges, and trends. Following this history, for both researchers and seasoned practitioners XP 2020 provided an informal environment to network, share, and discover trends in Agile for the next 20 years. The 14 full and 2 short papers presented in this volume were carefully reviewed and selected from 37 submissions. They were organized in topical sections named: agile adoption; agile practices; large-scale agile; the business of agile; and agile and testing. Note de contenu : - Agile Practices in Practice: Towards a Theory of Agile Adoption and Process Evolution
- Agile Methods Knowledge Representation for Systematic Practices Adoption
- Leadership Gap in Agile Teams: How Teams and Scrum Masters Mature
- BAM - Backlog Assessment Method
- The Unfulfilled Potential of Data-Driven Decision Making in Agile Software Development
- Empowering Agile Project Members with Accessibility Testing Tools: A Case Study
- Artifact-Facilitated Communication in Agile User-Centered Design
- The Product Owner in Large-Scale Agile: An Empirical Study Through the Lens of Relational Coordination Theory
- Using Social Network Analysis to Investigate the Collaboration Between Architects and Agile Teams: A Case Study of a Large-Scale Agile Development Program in a German Consumer Electronics Company
- How Are Agile Release Trains Formed in Practice? A Case Study in a Large Financial Corporation
- Corporate-Level Communities at Ericsson: Parallel Organizational Structure for Fostering Alignment for Autonomy
- Scaling Agile Beyond Organizational Boundaries: Coordination Challenges in Software Ecosystems
- Enterprise Agility: A Balancing Act - A Local Government Case Study
- A Taxonomy of Software Engineering Challenges for Machine Learning Systems: An Empirical Investigation
- Evolution of Scrum Transcending Business Domains and the Future of Agile Project ManagementNuméro de notice : 25974 Affiliation des auteurs : non IGN Thématique : INFORMATIQUE Nature : Actes DOI : 10.1007/978-3-030-19034-7 En ligne : https://doi.org/10.1007/978-3-030-19034-7 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96641 PermalinkPermalinkPermalinkCartographier l'offre des services de santé en France / Anonyme in Géomatique expert, n° 126 (janvier - février 2019)
PermalinkPermalinkPermalinkConception et évaluation de techniques d'interaction non-visuelle basées sur un dispositif personnel / Sandra Bardot (2019)
PermalinkPermalinkContribution au développement d’une plateforme web d’analyse réglementaire et de gestion des vols de drones / Yassmine Boudili (2019)
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