Abstract
The focus of this research is addressing a subset of the geovisualization (i.e., geographic visualization) challenges identified in the literature, namely multidimensional vector and raster geospatial data visualization. Moreover, the work implements an approach for multidimensional raster geospatial data processing. The results of this research are provided through a geoportal comprised of multiple applications that are related to 3D visualization of cities, ground deformation, land use and land cover and mobility. In a subset of the applications, the datasets handled are considered to be large in volume. The geospatial data were visualized on dynamic and interactive virtual globes to enable visual exploration. The geoportal is available on the web to enable cross-platform access to it. Furthermore, the geoportal was developed employing open standards, free and open source software (FOSS) and open data, most importantly to ensure interoperability and reduce the barriers to access it. The geoportal brings together various datasets, different both in terms of context and format employing numerous technologies. As a result, the existing web technologies for geovisualization and geospatial data processing were examined and exemplary and innovative software was developed to extend the state of the art.
Highlights
Geographic visualization, often shortened as geovisualization, was born as a result of the tools emerged in the digital era, transforming cartography
The focus of this research is addressing a subset of the geovisualization challenges identified in the literature, namely multidimensional vector and raster geospatial data visualization
The results of this research are provided through a geoportal comprised of multiple applications that are related to 3D visualization of cities, ground deformation, land use and land cover and mobility
Summary
Geographic visualization, often shortened as geovisualization, was born as a result of the tools emerged in the digital era, transforming cartography. The research objective of this work is to develop exemplary software using open standards, FOSS and open data with an optimized interface and performance that addresses big and multidimensional vector and raster geospatial data visualization and processing using virtual globe technologies on the web. Not restricted to the themes of the applications in this work, it is envisaged that a single system that brings together various important aspects of urban areas will be desirable and the datasets employed will likely to have multidimensional nature, as there is a trend towards both multidimensional vector data visualization (i.e., creating digital twins of cities) and having the time dimension in both visualization and processing of raster data as a result of the continuous production of EO data. This work aims to contribute to the vision of Digital Earth
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