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Auflistung nach Autor:in "Epitropou, Victor"

1 - 3 von 3
  • Konferenzbeitrag
    A method for the constrained interpolation of RLE-compressible chemical weather heatmaps
    (Proceedings of the 28th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2014) Epitropou, Victor; Karatzas, Konstantinos; Kukkonen, Jaakko; Karppinen, Ari
    Chemical Weather (CW) and other geospatial environmental information produced by numerical models are often published on-line in the form of heatmaps which have undergone several lossy processing and transformation steps, resulting in a relatively low visualization and recoverable data, compared to the model data which generated them,. In this paper, a method which is finetuned to the partial reconstruction of such chemical weather data starting from discrete-level heatmaps is presented, which relies on the augmentation of ordinary interpolation methods through the use of peak-limiting functions and other constraining methods.
  • Konferenzbeitrag
    Open tools and services for INSPIRE related environmental data and metadata: reporting on experiences gained in GS Soil
    (Integration of Environmental Information in Europe, 2010) Epitropou, Victor; Karatzas, Kostas; Bassoukos, Anastasios
    The main issue with environmental geographic data and their associated metadata is that they are often scattered across numerous data providers around the world or just within a country/federation (including the EU), and that there’s a large variability in the used formats and presentation/delivery methods, especially at the web service level. The EU INSPIRE directive aims at standardizing at least the metadata format and its minimum mandatory contents, defining a minimum common degree of information interoperability and interchange in order to maximize the homogeneity and usability of metadata. Within the framework of the GS Soil project, a set of essential Free and Open Source Software tools to be used by participating partners were evaluated and tested, in order to identify and provide a free, standards-compliant set of tools to similar future geospatial environmental projects within the EU.
  • Konferenzbeitrag
    The GS SOIL portal prototype and its integrated network
    (Integration of Environmental Information in Europe, 2010) Feiden , Katharina; Kruse, Fred; Epitropou, Victor; Karatzas, Kostas
    The first year of implementing the eContentplus project GS SOIL “Assessment and strategic development of INSPIRE compliant geodata services for European soil data” by the large project consortium of 34 project partners out of 18 European member states already led to powerful deliverables (Feiden et. al. 2009, Kruse et. al. 2009). The soil and soil-related data available in the participating countries and by involved data providers were analyzed according to the kind, format, and intellectual property rights applied. By elaboration of best practice guidelines the provided and specific datasets will be systematically harmonized during the project running time. At the beginning of the project specific and generic requirements for soil information, services and products were identified by a range of user communities and stakeholders in the 18 participating countries. This requirement analysis resulted in a soil inventory and theme catalogue, which documents the current state and ability of data providers to meet the goal of data harmonization. The activities regarding an INSPIRE (European Union 2007) compliant GS SOIL data specification led to the definition of GS SOIL specific metadata profiles for soil geographic datasets / dataset series and data services. They were developed following the INSPIRE IR for metadata, other international, and national standards (like the ISO 19115 and ISO 19119), and the needs of the data users. Also soil specific test cases were defined as a basis for the development of a generic application schema. Further, the GS SOIL consortium supports experts in the recently established INSPIRE Thematic Working Group (TWG) to develop data specification for the theme soil of the annex III of the INSPIRE Directive. Finally, the project provides reference material for the TWG. This paper will focus on the establishment of the prototype for the GS SOIL portal and its relevant network in order to provide a one-stop-portal for an easy access to European soil data.