Daniel Nüst

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Environmental sensors have continuously improved by becoming smaller, cheaper, and more intelligent over the past years. As consequence of these technological advancements, sensors are increasingly deployed to monitor our environment. The large variety of available sensor types with often incompatible protocols complicates the integration of sensors into(More)
Sensor data is crucial for mobile applications to support the user in the field. Several mobile applications are available for accessing such sensor data. However, a comprehensive approach for discovering such sensor data in the Sensor Web according to the user's context (i.e. the location) has not been proposed yet. This article describes an approach for(More)
The Geospatial Web comprises standards and software for a wide variety of applications, ranging from typical GIS (geographic information systems) functionality, via emergency management and monitoring use cases to distributed workflows [27]. Functions include data access and visualization, but also workflows are published as web-accessible resources. Web(More)
The Sensor Web is a collection of standards and software solutions that allows the management of and data retrieval from sensors through the internet. The Open Geospatial Consortium's (OGC) Sensor Observation Service (SOS) is the core web service to provide sensor data in an interoperable, standardized way. Because its goals are so generic, this service is(More)
Geographic Object-Based Image Analysis (GEOBIA) mostly uses proprietary software, but the interest in Free and Open-Source Software (FOSS) for GEOBIA is growing. This interest stems not only from cost savings, but also from benefits concerning reproducibility and collaboration. Technical challenges hamper practical reproducibility, especially when multiple(More)