Initial GMES Service for Geospatial Reference Data Access. Remote Sensing Department. INDRA ESPACIO

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1 Initial GMES Service for Geospatial Reference Data Access Remote Sensing Department. INDRA ESPACIO Brussels,

2 CONTENT 01 Overview 02 EU-DEM 03 Hydrography 04 Production Coordination 05 Access System 2

3 OVERVIEW GMES Global Monitoring for Environment and Security Preparatory Actions HR Sealing Layer Urban Atlas GSGRDA GSGRDA Start: Dec 2009 End: Dec 2012 Applications: EU-DEM: LMCS, ERCS, Flood prevention, etc Hydrography: WISE, WFD reporting, EEA is acting as main prescriptor and user contact point as well as it is tightly involved in the on-going evaluation. 3

4 EU-DEM Requirements 30m pixel +/- 7m height accuracy Fulfilling LMCS and ERCS Solution ASTER GDEM based SRTM for accuracy improvement -> Manual Edition Access to NEXTMap 1 arcsec for LMCS Access to NEXTMap 0,15 arcsec for ERCS Ownership of EU-DEM by EC 4

5 Service Definition Product Coverage Data Sources Resolution Vertical Accuracy Access LMCS EU-DEM EEA38 SRTM & ASTER NEXTMap Enhanced EU-DEM 20 Western EU countries NEXTMap Europe DTM 1 arc-second +/- 7.0 metres RMSE 1 arc-second +/- 1.0 metre (resampled from RMSE 0.15 arc-second) Unrestricted Restricted as per End User License Agreement ERCS NEXTMap Europe DTM Core Product 20 Western EU countries NEXTMap Europe 0.15 arc-second +/- 1.0 metre RMSE Restricted as per End User License Agreement 5

6 Production Methodology - Intermap 1. Data Preparation Aligning input data (NEXTMap, GDEM, ASTER, Landsat, ) Pilot area definition (2 x 2 ) Total of 1,165 tiles (1 ) SRTM 60 N GDEM NEXTMap 6

7 Production Methodology - Intermap 2. Process Development ASTER GDEM void masking Horizontal/Vertical shift correction FITS & Interpolator Algorithm port Fusion & water burn-in tool User & test documentation, edit rules, work instructions Training 7

8 Production Methodology - Intermap 3. Data Processing Production of un-edited EU-DEM Running developed tools for: Horizontal & vertical shift correction in ASTER GDEM Void filling/interpolation Weighted averaging 8

9 Production Methodology - Intermap 4. Data Editing & Harmonization Edge matching of EU-DEM & NEXTMap Enhanced EU-DEM Editing of blunders and water features in 3D stereo environment using QCed water layer provided by AGI GDEM NEXTMap ASTER mole runs 9

10 Production Methodology - Intermap 5. Final Data QC & Validation Vertical accuracy checks using available reference data (LiDAR, VCPs, etc.) Tiles review for adherence to product specifications Validate adherence to edit rules Reports 10

11 Hydrography Requirements 1: scale Support for WISE applications Relation with ECRINS and ERM (INSPIRE) Solution Extraction of water bodies from IMAGE2006 Delineation of river lines on top of IMAGE2006 Reference material: ECRINS, Topographic maps, Google Earth, etc Generation of river network topology Integration with EU-DEM 11

12 Production Methodology HYDROGRAPHY (AGI) 1. Data Preparation Download IMAGE 2006/2009 Transformation to production-ready CRS and formats Creation of satellite imagery database and spatial index for easy search and preview of the available scenes Selection of the best available imagery for production: Early-to-mid-summer season Cloud-free coverage (<5%) Mosaicking of identified image batches (same date) Selecting replacements for patching areas not suitable for production (clouds/shadows, snow/ice, etc.) Acquisition of the ancillary datasets: GEONAMES Euro-Regional Map (1:150,000) National datasets (if available) 12

13 INITIAL GMES SERVICE for GEOSPATIAL REFERENCE 2. Process DATA ACCESS Development PRODUCTION OF HYDRO- DATASETS: - Polygons extracted from IMAGE 2006/ Lines delineated from satellite images - Points generated from network topology QA/QC PROCEDURES: - Internal QA/QC ISO 9001: % of processed images inspected Iterative processing to reach compliance to specs. 20% of all vector objects checked for each unit - External QA/QC by project partners 100% large hydro-polygons checked during the data integration process TECHNOLOGY: - Use of FOSS GIS tools GRASS GIS scripts for production of polygons PostgreSQL/PostGIS for database storage OGC services (WMS) for on-line data publishing 13

14 3. Data Processing INITIAL GMES SERVICE for GEOSPATIAL REFERENCE DATA ACCESS IMAGE 2006 REFLECTANCE NDVI WATER 14

15 INITIAL 4. GMES Data SERVICE Editing for & GEOSPATIAL Harmonization REFERENCE DATA ACCESS Accuracy up to 10 m Automatic cleanup of coverages 100% inspection for artefacts QC 20% of all objects 15

16 Watersheds and sub-watersheds 16

17 Production Coordination Requirements Integration of water bodies with EUDEM Assignment of node heights based on EU-DEM Ensuring rivers flowing down for river polygons Solution Production workflow 17

18 EU-HYDRO / EU-DEM overlay PRODUCTION SEQUENCE 18

19 EU-HYDRO / EU-DEM overlay 19

20 EU-HYDRO / EU-DEM overlay 20

21 Access System Requirements Services based on open standards Fulfilling INSPIRE requirements Client showcase Solution Final hosting site still to be defined Metadata schema implementing INSPIRE rules for every theme Base services implemented with open source software Metadata: GeoNetwork WMS/WCS/WFS: GeoServer/GeoWebCache 21

22 Project Status Hydrographic layer content already defined: tables, attributes, metadata, etc. EUDEM layer features already defined Two Prototype areas produced for testing purposes Production nearly finished for water bodies (more than 98% tiles already Qced and ready for EU-DEM burning ) More than 50% of EUDEM produced Hydrographic layers already started (first river basin on QC) In assessment conformance to 1: scale in term of contents Access System and Client Showcase already developed. 22

23 Project Plan EU-DEM planned to be finished in M23 Hydrographic layers to be finished in M32 23

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29 Antonio Garzón Project Manager Mar Egeo, 4. Polígono Industrial nº San Fernando de Henares Madrid España T agarzon@indra.es 29

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