The INSPIRE Community Geoportal

Transcription

1 Infrastructure for Spatial Information in the European Community The INSPIRE Community Geoportal Gianluca Luraschi EC INSPIRE GEOPORTAL TEAM European Commission Joint Research Centre Institute for Environment and Sustainability Spatial Data Infrastructures Unit 1

2 INSPIRE Geoportal home page 2

3 INSPIRE Geoportal Requirements Required by the INSPIRE Directive Provide access to the Member States INSPIRE services Aims to provide an operational platform to satisfy the requirements of the directive and IR Development and operation under EC responsibility INSPIRE geoportal dependent on the IR development 3

4 Geoportal Prototype - Scope 4 interoperability assessment through use of INSPIRE Network Services establish an architecture for the INSPIRE geoportal in terms of functional requirements of the components and their interactions and the experience and lessons learned Drive the specifications for the operational geoportal assess the performance of different search scenarios; provide feedback to standardisation organisations

5 Spatial Data Infrastructure 5 Spatial Data Infrastructure (SDI) is a distributed system that allows acquiring, process, distributing, using, maintaining, and preserving spatial data (Maguire and Longley; 2005), where the core components of an SDI are people (including citizen), data, policy network architecture and technical standards (Rajabifard et al., 2002). Service Bus GeoRM layers Service Layer Data Sources Registry Service Registers Discovery Service Service Metadata Data Set Metadata View Service Download Service Spatial Data Set Thematic DS TWG TWG TWG Framework for harmonized DS DT MD DT DS Transf. Service InvokeSD Service DT NS Application and Geoportals

6 INSPIRE Geoportal network services discovery services - search for spatial data sets and spatial data services on the basis of the content of corresponding metadata, display the metadata content; view services - as a minimum, display, navigate, zoom in/out, pan, or overlay spatial data sets and display legend information and any relevant content of metadata; download services, enabling copies of complete spatial data sets, or of parts of such sets, to be downloaded; transformation services, enabling spatial data sets to be transformed; invoke spatial data services, enabling data services to be invoked. 6

7 INSPIRE Network Services Roadmap 7 Network Service Commission Legislation Guidance Documents Implementing Rules Discovery Regulation INSPIRE network services Final version (2.0) Draft version (3.0) /04/2008 View Regulation INSPIRE network services Final version (2.0) Draft version (3.0) /04/2008 Download Draft version (2.0) Draft Version (3.0) /09/2009 Transformation Draft version (2.0) Draft Version /09/2009 Invoke

8 INSPIRE-Geoportal Prototype 8 Current focus on INSPIRE Discovery & View services, metadata Tools (Discovery, View, Metadata Editor, Metadata Validation, ) Technical aspects addressed: Access to distributed INSPIRE Network Services Heterogeneities (e.g. interface, information encoding) Quality of service (performance, capacity, availability) Discovery & View web clients based on open source S/W and internal development According to the draft Technical guidelines (OGC CSW ISO AP, ISO 19128)

9 Geoportal architecture 9

10 Geoportal Discovery Federation Strategies Real time metadata up to date Questions on performance Full cache Performance depends only on geoportal Need regular updates to ensure metadata are up to date Partial cache Only information necessary for searching is cached (INSPIRE elements) Full Metadata record retrieved from MS discovery service 10

11 Geoportal Discovery mandatory search criteria 11 The discovery functionality has to support as a minimum the following combination of search criteria: keywords; classification of spatial data and services; the quality and validity of spatial data sets; degree of conformity with the implementing rules provided for in Article 7(1); geographical location; conditions applying to the access to and use of spatial data sets and services; the public authorities responsible for the establishment, management, maintenance and distribution of spatial data sets and services.

12 Geoportal Discovery - standards used 12

13 Geoportal - tools and components 13 Web Client Layer Web 2.0 GUI GeoRss OpenLayers Css Extjs Mapfish (js library) Html 1b. Ajax request/ response Server Web Layer Italian Struts xmlconfig English Internationalization 2b Struts JSP tag library (View) 7b Struts JavaBeans (Model) Struts Servlet (Controller) 3b Business Layer 4b 0b. getmapreq/ getmapres Discovery Proxy Discovery Core 1c 5b Data Access Layer 2a 3c Hibernate Session Hibernate Mappings 2c 1a 4c External Service Layer Cache Oracle Database View Service Discovery Services Hibernate Property

14 Geoportal Discovery - Search results presentation 14 Geographic extent Title, abstract, Link to full metadata Visualize data Statistics on search results with filtering

15 Geoportal Discovery - Search client 15 Presentation preferences: Default behaviour Search and based on Browse result criteria ranking, Bounding box, sorting based topic on MD categories, elements (e.g.

16 Geoportal Discovery - Metadata Details 16

17 Geoportal Viewer 17

18 Registers & registry services 18

19 Geoportal and SDI Future development 19 Geoportal future development Establish Interoperability arrangements in the context of Initial Operating Capability Multilinguality (GEMET, machine traslation) Download Services Transformation Services SDI future development Citizen

20 Integration of VGI into SDI Opportunity Technological innovations are enabling new sources of information Web 2.0 is introducing a new communication paradigm, where users can be also information providers GPS- and web- enabled mobile devices are becoming more mainstream citizens as sensors, provides Volunteered Geographic Information (VGI) LBSN can be seen as a framework with a huge potential to create such VGI 20

21 Integration of VGI into SDI 21 Volunteered Geographic Information, geography 2.0? VGI is a special case of the Web phenomenon of user-generated contents, where such contents has a geographic dimension. Wide consensus about its huge potential as a significant, timely and cost-effective source data. The big (research) issue: QUALITY CONTROL. Just Landed! - real-time geoprocessing based on Twitter Michael Goodchild, Citizens as Voluntary Sensors: Spatial Data Infrastructure in the World of Web 2.0, International Journal of Spatial Data Infrastructures Research 2 (2007):

22 Integration of VGI into SDI 22 VGI and Spatial Data Infrastructures the missing links thousands of inter-connected SDIs VGI2SDI workflow (data-mining, validation, clustering, ranking, filtering) Onestop-shop gateways Next Generation Digital earth web-friendly enablement (discover, browse, visualize, download) read-write geobrowsers billions of citizens M Craglia et al., Next-generation Digital Earth: A position paper from the Vespucci Initiative for the Advancement of Geographic Information Science, International Journal of Spatial Data Infrastructures Research 3 (2008):

23 Integration of VGI into SDI 23 Initial works The VGI2SDI workflow Purpose: to integrate quality-controlled VGI in SDI Principle: retrieval and processing of a subset of information contained in Internet-based usergenerated data repositories act Use Case Model ActivityInitial retrival formatting validation clustering Process: configurable steps providing addedvalue to the output ranking conversion ActivityFinal

24 Integration of VGI into SDI State of the Art De Longueville, B., Luraschi, G., Smits, P., Peedell, S. & De Groeve, T. (2009) From Volunteered Geographic Information to Spatial Data Infrastructures: a data integration workflow based on a case study. (Paper under review for Geomatica special issue on VGI) De Longueville, B.; Smith R.S.; Luraschi, G. OMG, from here, I can see the flames! : a use case of mining Location Based Social Networks to acquire spatio-temporal data on forest fires, Proceedings of the 2009 International Workshop on Location Based Social Networks (Held in conjunction with ACM GIS 2009 Conference) Nov. 3, 2009, Seattle, WA, USA Luraschi, G.; De Longueville, B.; Integration of Volunteered Geographic Information into Spatial Data Infrastructures: a case study ; 13rd National conference ASITA, Dec. 1-4, 2009, Bari, Italy EXPLORATORY RESEARCH: Next Generation Digital Earth: engaging the citizens in forest fires risk, and impact assessment. Persons responsible: Bertrand De Longueville, Gianluca Luraschi. Scientific Supervisors: Massimo Craglia (JRC), Ed Parsons (Google) 24

25 Integration of VGI into SDI: a case study 25 Conclusion VGI can be turned in a valuable source of information for Our most prominent result is the SDIs Source: confirmation that VGI might be used to detect major events affecting an important number of citizens. The VGI production is more important where there is a conjunction of damage and affected citizens The discrimination between primary and secondary information is uneasy but crucial. VGI can be retrieved without specific expertise in the field of interest VGI can be retrieved without knowledge of all the languages spoken in the studied geographic area,

26 Integration of VGI into SDI: a case study 26 Conclusion VGI as a real-time source for spatio-temporal event-related information Just as we readily accept the processing of satellite data as an input to many geospatial analyses, we should also aim to better interpret the abundant and freely available signals provided by citizensensors. VGI - Web Sensor Enablement Ian Hanning/AFP

27 27 Web Site: For more information contact