Assisted Generation and Publication of Geospatial Metadata
- 1. Assisted Generation and Publication of Geospatial Metadata Sergi Trilles; Laura Díaz; José Gil; Joaquín Huerta
- 2. Index ● Introduction ● Motivation ● Geoss Service Factory (GSF) ● Architecture ● Experimentation ● Conclusions
- 3. Introduction • Starting from geographic 1 data… • …Web Processing Service to publish data and metadata 2 generated automatically … • … standard and publicly 3 available.
- 4. Motivation Share Discovery
- 5. GSF (Geoss Service Factory) (I) • Acces • Share • Discovery • Act • Visualize (Publish) • Access • Download • Decide • Processing
- 6. GSF (Geoss Service Factory) (II) Geospatial Content Models Metadata Data Services Discovery View Download Invocation Publication Applications Workflow Engine Application Logic Service Connector
- 7. GSF (Geoss Service Factory) (III) Factories Existing APIs instances View WMS WMS WPS Interface Download WFS WFS Content Discovery SPP WCS WCS Keywords MD Generator CSW CSW Transformation SOS SOS Service
- 8. MD Generator IO Architecture WMS URL WFS URL MD CSW Generator URL Keywords
- 9. MD Generator Execution Flow Exixting Factories APIs instances View WMS 3 WMS WPS Interface Discovery Download 7 Link WFS 3 WFS 6 Discovery SPP 1 WCS WCS Keywords MD MD url Generator CSW 5 CSW SPP Transformation SOS SOS Service
- 10. MD Generator Sequence Diagram user MD Generator Geoserver instance XSLT CSW-T client Request MDGenerator GetCapabilities request to the WMS service Generate MD Return MD Update MD Connect to CSW-T client Return URL MD
- 11. Metadata structure language Language characterSet Coding hierarchyLevel Hierarchical level of the referred data set contact Responsible info Metadata dateStamp Date of creation ISO 19139 standardVersion Standard used identificationInfo About the data: name, date, summary … distribuciónInfo URL services dataQuality Information relating to the standard
- 14. Experimentation (III) ● Time cost 18 seconds (Intel(R) Xeon(R) CPU 5160 @ 3.00GHz, RAM Memory 16 GB DDR2 FB-DIMM Synchronous 667 MHz)
- 15. Conclusions We close the life-cycle of geospatial information with the publication step. Simple process to publish data and metadata Improving search and access to information since the metadata is linked to the data
- 16. Thanks for your attention ¿?