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Reconstructing forest canopy from the 3D triangulations of airborne laser scanning point data for the visualization and planning of forested landscapes / Jari Vauhkonen in Annals of Forest Science, vol 74 n° 1 (March 2017)
[article]
Titre : Reconstructing forest canopy from the 3D triangulations of airborne laser scanning point data for the visualization and planning of forested landscapes Type de document : Article/Communication Auteurs : Jari Vauhkonen, Auteur ; Roope Ruotsalainen, Auteur Année de publication : 2017 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] analyse multicritère
[Termes IGN] biomasse forestière
[Termes IGN] canopée
[Termes IGN] coupe (sylviculture)
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] géovisualisation
[Termes IGN] modèle de simulation
[Termes IGN] participation du public
[Termes IGN] processus de hiérarchisation analytique
[Termes IGN] reconstruction 3D
[Termes IGN] relation topologique 3D
[Termes IGN] SIG participatif
[Termes IGN] simulation numérique
[Termes IGN] troncRésumé : (Auteur) We present a data-driven technique to visualize forest landscapes and simulate their future development according to alternative management scenarios. Gentle harvesting intensities were preferred for maintaining scenic values in a test of eliciting public’s preferences based on the simulated landscapes.
Context : Visualizations of future forest landscapes according to alternative management scenarios are useful for eliciting stakeholders’ preferences on the alternatives. However, conventional computer visualizations require laborious tree-wise measurements or simulators to generate these observations.
Aims : We describe and evaluate an alternative approach, in which the visualization is based on reconstructing forest canopy from sparse density, leaf-off airborne laser scanning data.
Methods : Computational geometry was employed to generate filtrations, i.e., ordered sets of simplices belonging to the three-dimensional triangulations of the point data. An appropriate degree of filtering was determined by analyzing the topological persistence of the filtrations. The topology was further utilized to simulate changes to canopy biomass, resembling harvests with varying retention levels. Relative priorities of recreational and scenic values of the harvests were estimated based on pairwise comparisons and analytic hierarchy process (AHP).
Results : The canopy elements were co-located with the tree stems measured in the field, and the visualizations derived from the entire landscape showed reasonably realistic, despite a low numerical correspondence with plot-level forest attributes. The potential and limitations to improve the proposed parameterization are discussed.
Conclusion : Although the criteria to evaluate the landscape visualization and simulation models were not conclusive, the results suggest that forest scenes may be feasibly reconstructed based on data already covering broad areas and readily available for practical applications.Numéro de notice : A2017-041 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.1007/s13595-016-0598-6 Date de publication en ligne : 06/07/2017 En ligne : http://doi.org/10.1007/s13595-016-0598-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84199
in Annals of Forest Science > vol 74 n° 1 (March 2017)[article]The importance of context : assessing the benefits and limitations of participatory mapping for empowering indigenous communities in the comarca Ngäbe-Buglé, Panama / Derek A. Smith in Cartographica, vol 52 n° 1 (Spring 2017)
[article]
Titre : The importance of context : assessing the benefits and limitations of participatory mapping for empowering indigenous communities in the comarca Ngäbe-Buglé, Panama Type de document : Article/Communication Auteurs : Derek A. Smith, Auteur ; Alicia Ibáñez, Auteur ; Francisco Herrera, Auteur Année de publication : 2017 Article en page(s) : pp 49 - 62 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] cartographie collaborative
[Termes IGN] conservation du patrimoine
[Termes IGN] données localisées des bénévoles
[Termes IGN] gestion
[Termes IGN] outil informatique
[Termes IGN] Panama
[Termes IGN] participation du public
[Termes IGN] territoireRésumé : (Auteur) Indigenous communities have been involved in participatory mapping projects to protect their territories and manage their resources for decades. However, while tremendous advances have been achieved in many settings, the use of maps by indigenous peoples is very uneven. Here we present the case of a team of university researchers, indigenous students, and local investigators who used a participatory approach to map cultural landscapes and mature forest cover in the Comarca Ngäbe-Buglé of Panama. This article examines the success and limitations of efforts to empower indigenous people in the region to use mapping tools for conservation and resource management. The project, while it provides a useful example of how to build a participatory research team to produce maps that better reflect indigenous points of view, fell short of empowering indigenous authorities to use geographic tools to manage their territories. This is due mainly to the lack of administrative capacity needed to make use of geospatial information. We argue that cartographers involved in participatory projects, while typically attentive to the problems of marginalization, need to pay more attention to the broader socioeconomic contexts of their work and to redouble their efforts to respond to the challenges of the digital divide, which is a symptom of broader socioeconomic and political inequalities stemming from the legacies of colonialism. Numéro de notice : A2017-137 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/cart.52.1.3574 En ligne : http://dx.doi.org/10.3138/cart.52.1.3574 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84607
in Cartographica > vol 52 n° 1 (Spring 2017) . - pp 49 - 62[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 031-2017011 SL Revue Centre de documentation Revues en salle Disponible A shared perspective for PGIS and VGI / Jeroen Verplanke in Cartographic journal (the), Vol 53 n° 4 (November 2016)
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Titre : A shared perspective for PGIS and VGI Type de document : Article/Communication Auteurs : Jeroen Verplanke, Auteur ; Claudia Uberhuaga, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 308 - 317 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] données localisées des bénévoles
[Termes IGN] GeoWeb
[Termes IGN] participation du public
[Termes IGN] SIG participatifRésumé : (Auteur) This paper reviews persistent principles of participation processes. On the basis of a review of recent interrogations of the (Public) Participatory Geographic Information Systems (P)PGIS and Volunteered Geographic Information (VGI) approaches, a summary of five prevailing principles in participatory spatial information handling is presented. We investigate these five principles that are common to (P)PGIS and VGI on the basis of a framework of two dimensions that govern the participatory use of spatial information from the perspective of people and society. This framework is presented as a shared perspective of (P)PGIS and VGI and illustrates that, although both share many of these same principles, the ways in which these principles are approached are highly diverse. The paper ends with a future outlook in which we discuss the inter-connected memes of potential technological futures, the signification of localness in ‘local spatial knowledge’, and the ramifications of ethical tenets by which PGIS and VGI can strengthen each other as two sides of the same coin. Numéro de notice : A2016--005 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2016.1227552 En ligne : http://dx.doi.org/10.1080/00087041.2016.1227552 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83830
in Cartographic journal (the) > Vol 53 n° 4 (November 2016) . - pp 308 - 317[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2016041 RAB Revue Centre de documentation En réserve L003 Disponible Upside-down GIS : the future of citizen science and community participation / M.M. Thompson in Cartographic journal (the), Vol 53 n° 4 (November 2016)
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Titre : Upside-down GIS : the future of citizen science and community participation Type de document : Article/Communication Auteurs : M.M. Thompson, Auteur Année de publication : 2016 Article en page(s) : pp 326 - 334 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] citoyen
[Termes IGN] norme de données localisées
[Termes IGN] participation du public
[Termes IGN] SIG participatifRésumé : (Auteur) This article will focus on the changes in time, technology and data that have affected traditional partner relationships using participatory geographic information systems (PGIS). Project development roles of reliance held by the community, and managed by university agents, has shifted from cooperative to, in some cases, complete independence. The modern model of citizen participation includes a resident-planner toolkit with greater access to neighbourhood data and low- to high-tech analytical tools. Many community-led quality of life studies have a limited scope and focus on policy issues that do not serve a larger constituency. Many neighbourhood plans exclude self-reported neighbourhood knowledge and, due to the frequency of municipal reporting cycles, leaves gaps and data mismatch. Given this, the traditional public participation GIS (PPGIS) model may be less data driven due to a more mission-driven resident-led PGIS solution. Planners in practice and in academia have raised levels of concern about data standards, interoperability, reliability, error and metadata. How and why Citizen Science influenced the progression of PPGIS, participation GIS, crowdsourcing and now community-managed data in both theory and practice are provided. This paper will reflect on how top-down strategies to include neighbourhood knowledge are being reframed by the United States Federal Community of Practice. The future of data integration focuses on both the process and products of data development from both the bottom-up and top-down perspectives. Numéro de notice : A2016--006 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2016.1243863 En ligne : http://dx.doi.org/10.1080/00087041.2016.1243863 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83831
in Cartographic journal (the) > Vol 53 n° 4 (November 2016) . - pp 326 - 334[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2016041 RAB Revue Centre de documentation En réserve L003 Disponible 3D geovisualization & stylization to manage comprehensive and participative local urban plans / Mickaël Brasebin in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol IV-2 W1 (October 2016)
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Titre : 3D geovisualization & stylization to manage comprehensive and participative local urban plans Type de document : Article/Communication Auteurs : Mickaël Brasebin , Auteur ; Sidonie Christophe , Auteur ; Florence Jacquinod , Auteur ; Anouk Vinesse, Auteur ; Hortense Mahon, Auteur Année de publication : 2016 Conférence : 3D Geoinfo 2016, ISPRS 11th international conference 20/10/2016 21/10/2016 Athènes Grèce ISPRS OA Annals Commission 4 Article en page(s) : pp 83 - 91 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] document d'urbanisme
[Termes IGN] données localisées 3D
[Termes IGN] participation du public
[Termes IGN] plan local d'urbanisme
[Termes IGN] rendu réaliste
[Termes IGN] simulation 3D
[Termes IGN] style cartographique
[Termes IGN] urbanisme
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) 3D geo-visualization is more and more used and appreciated to support public participation, and is generally used to present predesigned planned projects. Nevertheless, other participatory processes may benefit from such technology such as the elaboration of urban planning documents. In this article, we present one of the objectives of the PLU++ project: the design of a 3D geo-visualization system that eases the participation concerning local urban plans. Through a pluridisciplinary approach, it aims at covering the different aspects of such a system: the simulation of built configurations to represent regulation information, the efficient stylization of these objects to make people understand their meanings and the interaction between 3D simulation and stylization. The system aims at being adaptive according to the participation context and to the dynamic of the participation. It will offer the possibility to modify simulation results and the rendering styles of the 3D representations to support participation. The proposed 3D rendering styles will be used in a set of practical experiments in order to test and validate some hypothesis from past researches of the project members about 3D simulation, 3D semiotics and knowledge about uses. Numéro de notice : A2016-811 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE/URBANISME Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5194/isprs-annals-IV-2-W1-83-2016 En ligne : http://dx.doi.org/10.5194/isprs-annals-IV-2-W1-83-2016 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82610
in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences > vol IV-2 W1 (October 2016) . - pp 83 - 91[article]Documents numériques
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A2016-811_3D geovisualization & stylization to manage comprehensive and participative local urban plans.pdfAdobe Acrobat PDF Crowdsourcing, citizen science or volunteered geographic information? The current state of crowdsourced geographic information / Linda M. See in ISPRS International journal of geo-information, vol 5 n° 5 (May 2016)PermalinkEmergency management perspectives on volunteered geographic information: Opportunities, challenges and change / Billy Haworth in Computers, Environment and Urban Systems, vol 57 (May 2016)PermalinkAssessing resistance to volunteered geographic information reporting within local government / Muning W. Brandeis in Transactions in GIS, vol 20 n° 2 (April 2016)PermalinkPublic participation in GIS via mobile applications / Maria Antonia Brovelli in ISPRS Journal of photogrammetry and remote sensing, vol 114 (April 2016)PermalinkPlanifier le territoire avec et pour les citoyens / Yves Delacrétaz in Géomatique suisse, vol 114 n° 3 (mars 2016)PermalinkAn interactive system for intrinsic validation of citizen science data for species distribution mapping and modelling applications / Hossein Vahidi (2016)PermalinkVGI quality control / Cidália Costa Fonte in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W5 (October 2015)PermalinkVisualisation of spread of Chalara ash dieback for raising public awareness and responsible woodland access / Chen Wang (2015)PermalinkEnseigner la sémiologie graphique comme outil d'aide à la décision / Anne Chappuis in Cartes & Géomatique, n° 222 (décembre 2014)PermalinkGeoint: of the people, by the people, for the people / Anonyme in GEO: Geoconnexion international, vol 13 n° 8 (september 2014)Permalink