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Auflistung nach Autor:in "Kutschera, Peter"

1 - 4 von 4
  • Konferenzbeitrag
    EnviroMap Austria — A Novel Web-Based Environmental Atlas
    (The Information Society and Enlargement of the European Union, 2003) Orthofer, Rudolf; Kutschera, Peter; Humer, Heinrich; Loibl, Wolfgang
    The authors propose a new approach for public dissemination of digital map data through an interactive web-based system. Holders of environmental data can publish a version of their data and data seekers get access to these data. Environmental maps are managed as raster data streams based on a standard map projection and a predefined 250x250 m cell size. The advantages of the EnviroMap system are that users do not need GIS expertise, and that data holders can use the system for publishing an "EnviroMap raster version" of their original GIS data and thus advertising the availability of original data. Die Autoren schlagen einen neuen Ansatz für die öffentliche Verbreitung digitaler Landkarten durch ein web-basiertes interaktives System vor. Dateninhaber können ihre Daten mit einem Upload-Tool in das System hochladen, Datennutzer haben dann Zugriff zu diesen Daten. Im EnviroMap-System werden Umweltkarten als Rasterdaten verarbeitet, die auf einer standardisierten Geo-Projektion und einer vorgegebenen 250x250 m Zellgröße basieren. Vorteil des EnviroMap-Systems ist, dass es auch von Nutzern, die keine besonderen GIS-Kenntnisse haben, einfach verwendet werden kann, sowie, dass Dateninhaber eine "EnviroMap Raster-Version" ihrer originalen GIS-Daten veröffentlichen können und damit die Verfügbarkeit ihrer Originaldaten bewerben können.
  • Konferenzbeitrag
    Geospatial Service Interfaces and Encodings for Mobile Applications
    (EnviroInfo Dessau 2012, Part 1: Core Application Areas, 2012) Havlik, Denis; Kutschera, Peter; Geyer, Clemens; Egly, Maria
    Sensor Web Enablement suite (OGC SWE) offers a set of standardized service interfaces and data models which can be used for encapsulation of arbitrary observation-generating processes. In the past, AIT has used the OGC SWE for wrapping of hardware sensors, sensor data stores, cadastres and various sensor-like models behind OGC Sensor Observation Service (for data access) and Sensor Planning Service (for process control) interfaces. This approach was successfully applied in different projects (SANY, SUDPLAN), and resulted in development of the SOS and SPS service interfaces for the set of open source tools for time-series handling (ts-toolbox.ait.ac.at) developed by AIT. We have also discovered several issues and limitations of the OGC SWE services: (1) encoding of observations in SensorML/SWE Common is not always straightforward; (2) XML encoding/decoding can become extremely inefficient for large data sets; and (3) the complexity of the OGC XML schemas (O&M, SWE common, GML) further slows down the SWE-based solutions. However, these issues appeared of secondary importance compared to benefits of interoperability for classic environmental applications where both server and the client had plenty of memory and CPU power, the observations and processes creating them are well-defined and do not often change, and the interoperability across different organizations is a must. Recently, our focus moved towards Volunteered Geographic Information, and the rules of the game changed, with (potential) numbers and profiles of users and “sensors” drastically rising, and smartphones replacing the classical PCs as key client platform. This resulted in development of a Mobile Data Acquisition Framework (MDAF) which will be described in this paper.
  • Konferenzbeitrag
    Sensor Web Enablement based Model Web Implementation for Climate Change Applications
    (Innovations in Sharing Environmental Observations and Information, 2011) Bartha, Mihai; Kutschera, Peter; Havlik, Denis
    Interoperable Web-enabled environmental models are essential part of the service oriented environmental applications. Concepts, architectures, standards and software allowing seamless integration of models in distributed webenabled applications (Model Web) are therefore a logical extension of the quest for interoperable service infrastructures allowing visualization and data access that is currently implemented within the scope of Infrastructure for Spatial Information in Europe directive (INSPIRE), and necessary for further development of the Global Monitoring for Environment and Security (GMES), Shared Environmental Information System (SEIS), and the Global Earth Observation System of Systems (GEOSS) initiatives. SANY Sensor Service Architecture (SensorSA) proposed the Sensor Web Enablement (SWE) suite of standards developed by Open Geospatial Consortium (OGC) as a base for web-enabling the “sensor-like models”. Sensor-like in this context means that the output data model contains observations, that is a set of values with (at least) the associated units, spatial and temporal context. This is true for a great majority of environmental models, and for many other sources of information including e.g. cadastres and the Volunteered Geographic Information (VGI). This versatility of SWE, as well as its focus on processes rather than on the physical sensors is often confusing for end users. We therefore recommend use of “observation web” as a technology-neutral synonymous for sensor web in all discussions with end users and decision makers, and SWE-based Model Web for web-enabled models with SWE service interfaces and data models. Our experiences in SANY and, more recently, in SUDPLAN research project show that SWE indeed provides most of the Model Web functionality for environmental and climate change applications. The Sensor Observation Service (SOS) allows us to access both the underlying data required for the model run, as well as to expose the model results; the Sensor Planning Service to configure, schedule and control the model runs; and the Sensor Modelling Language (SensorML) and Observations & Measurements (O&M) modelling languages to describe the process and the result set respectively. This paper presents our experiences with SWE-based Model Web in SUDPLAN, and discusses the already achieved results, as well as the planned model web developments. Special attention shall be given to (1) process description in both SOS and SPS context; (2) various possibilities for presenting the time series of 2D coverages in O&M; (3) model parameterization, execution and monitoring; (4) input-, output- and processing uncertainties. Keywords: Environmental modelling; Open Geospatial Consortium; Sensor Web enablement; OGC SWE; Model Web; Observation Web; Time Series Toolbox; Sensor Service Architecture; SensorSA;
  • Konferenzbeitrag
    Source System Integration using the Framework for ORCHESTRA Services
    (Environmental Informatics and Systems Research, 2007) Kutschera, Peter; Ecker, Severin; Schimak, Gerald
    In this paper, an easy to implement, therefore time and cost efficient approach to integrate source systems into an ORCHESTRA service network will be presented. The framework recently developed at the Austrian Research Centers is described in detail and by examples in the following chapters. The basis for this framework was taken from the results of the ORCHESTRA project, which in short is concerned with interoperability of systems among different countries and organizations.