1 / 9

Introduction to Carto-Change

07/05/2008 Carto-Change User meeting S. Kleeschulte / GeoVille. Introduction to Carto-Change. in co-operation with. Does remote sensing really deliver ‘consistent’ and ‘comparable’ results?. information sources ?. classification legends & class definitions ?.

aricin
Download Presentation

Introduction to Carto-Change

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 07/05/2008Carto-Change User meetingS. Kleeschulte / GeoVille Introduction to Carto-Change in co-operation with

  2. Does remote sensing really deliver ‘consistent’ and ‘comparable’ results? • information sources ? • classification legends & class definitions ? • mapping standards & methodologies ? • acquisition dates ? • Lack of a common language between different land cover maps • Applicability for joint land cover change analyses is limited without prior map harmonization

  3. Sources for geometric and thematic discrepancies between LC maps • Information sources & reference data for interpretation • Data source properties: Acquisition date, pre-processing, spatial / radiometric / spectral resolution • Classification legends and class definitions • Geometric mapping specifications: MMU, minimum width of objects • Data formats, cartographic standards, spatial reference systems • Thematic accuracy & interpretation methodology • Land Cover changes

  4. Comparability of land cover maps Current research focus is on semantic map adaptation for achieving thematic comparability Adjustments of thematic class content and class descriptions (e.g. towards FAO LCCS) Legend translation protocols: for comparison of existing LC maps (e.g. CLC into LCCS; problem of inconsistencies) Geometric map adaptation and statistical co-analysis have not been addressed thoroughly Achieving cartographic and statistical comparability for multi-scale land cover change analysis remains an unsolved issue

  5. CARTO-CHANGE in the European land monitoring context CORINE CLC 1990 / 2000 / 2006 / 2010? GMES land cover mapping activities ESA GSE Stage 1: SAGE, GUS, Coastwatch ESA GSE Stage 2 - GSE Land: large area application of land cover mapping (i.e. 10% of EU 25) EU – IP geoland: consolidation of services FTSP: operational European land cover mapping Globcover Medium resolution land cover mapping on global scale CARTO-CHANGE: Tool for comparison of time series based on heterogeneous land cover information & sources

  6. Browsing scales with land cover maps Time What happens in the meantime? Scale 1 : 25.000 Advanced CLC 1 : 100.000 CLC 1 : 1.000.000 GLOBCOVER High resolution updates for priority areas (3-5 years) Baseline maps (every 10 years) Medium resolution annual updates Comparability of different land cover maps? Reliability of identified land cover changes?

  7. Objectives of CARTO-CHANGE Development of a generic and flexible GIS based methodology and information services based on this methodology • for making existing land cover data from Globcover, CLC and CLC+ comparable Cartographic and statistic comparison of land cover / land use (LC/CU) information across different scales and resolutions CARTOSTAT Timely statistical identification ofcandidate land cover changes by using LC/LU information derived from medium resolution satellite data CHANGESTAT

  8. Project partners • GeoVille (prime contractor; Austria) • Universitat Autònoma de Barcelona (UAB) • Users • European Environment Agency (EEA) • Umweltbundesamt At • CARTO-CHANGE products and services are tested, validated and operationalised within the potential future user group • CARTO-CHANGE may serve as input to • EEA’s land accounting approach • Data comparison and co-analysis on national level (UBA-At) w.r.t. environmental reporting and landscape change analysis

  9. Validation plan (by UAB on behalf of EEA and UBA At) CARTOSTAT • Quality of the adapted land cover maps measured via confusion matrices derived before and after the cartographic assimilation • Overall agreement in the final matrix: > 80% • Derive candidate changes between two different land cover maps • Check the derived candidate changes • Overall agreement: > 80% (changes larger than MMU) CHANGESTAT

More Related