Semi-automatic metadata extraction from imagery and cartographic data

Metadata are necessary to allow discovery and description of data and service resources within a Spatial Data Infrastructure, however current manual metadata editing workflows are tedious and under-utilized. We discuss on-going developments for semi-automatic metadata extraction from well- known imagery and cartographic data sources, being implemented within an open source software project in Spain. Internal metadata are collected automatically and the user can then choose to add external metadata, and to publish the final metadata record to catalogues. The next step will be to extract implicit metadata using Google-like methods.