Exploring the use of a generic spatial access method for caching and efficient retrieval of vario-scale data in a client-server architecture

Vario-scale data structures make it possible to derive maps at arbitrary scale. When requesting a map, data has to be transferred from server to client. This takes time, which affects the responsiveness of the system, and sometimes costs can be involved for every byte that is send over the network. Redundant data transfers should thus be avoided...

Comparing NetCDF and a multidimensional array database on managing and querying large hydrologic datasets: A case study of SciDB

Like many ICT related domains, hydrology enters the era of big data and managing large volume of data is a potential issue facing hydrologists. However at present, hydrologic data research is mostly concerned with data collection, interpretation, modelling and visualization. Management and query of large datasets do not draw much interest. The...

Visualisation conformity of three dimensional IMGeo for emergency response

The past seventy years the number of disasters that occur, man-made and natural, has increased. This problem requires suitable and efficient means to control and respond to emergency situations. Currently, the emergency responders use maps and software that allows for two dimensional visualisations of situations. Meanwhile the development of...

Specifying requirements for Automatic Generalisation of Electronic Navigational Charts

This short summary helps to grasp the motive behind the research, its objectives and to find out what is presented on the following pages of the report. It offers a condensed, one page recapitulation of its contents and intentions and suggests who might be interested to read it. CONTEXT Map generalisation is a tedious task, requiring skilled...

Integrating data: A water quality case study

Data integration is becoming an increasingly important issue with the increased sharing of information as a result of linked data and Spatial Data Infrastructures. To investigate the potential issues a case study for the Water Quality Register (WQR) of the Informatiehuis Water is used. In this case study the data residing in three separate data...

INSPIRE Compliant Datasets Transformation & Conformance Testing

The INSPIRE initiative sets up a framework for the creation of an European Spatial Data Infrastructure (ESDI), which will enable the sharing of environmental spatial information among public sector organisations and better facilitate public access in general to spatial information across Europe. To do so, several common specifications have been...

Quality assessment and object matching of OpenStreetMap in combination with the Dutch topographic map TOP10NL

The possibility of an automatic object matching process in combination with a VGI (Volunteered Geographical Information) type of map has been explored in this research. TOP10NL, the topographic map of the Netherlands and OpenStreetMap (OSM), the VGI type of map have been chosen for this purpose. The object matching process in this research...

NoSQL spatial: Neo4j versus PostGIS

The relational data model is now more than 40 years old. It's good for very diferent scenarios and can handle certain types of data very well. But it isn't perfect. An increasing number of non-relational systems are being worked on, collectively called the 'NoSQL movement'. NoSQL is an umbrella term for a loosely defined class of non-relational...

Exploring the possibilities of production of a culture codes dataset on cadastral parcel level by making use of external source datasets

Sharing and reusing spatial data becomes more and more important. One way of reusing shared spatial data is by creating a new dataset by making use of spatial data available in a combination of external datasets. This has been the central theme in this thesis, as its main objective has been to explore the possibilities of producing a culture...

Planning an indoor navigation service for a smartphone with Wi-Fi fingerprinting localization

Navigation has become booming business recently. Well-known navigation services, such as TomTom, Garmin and Google Navigation, are dominating the market for outdoor, road based navigation. The fact that such applications are able to determine a location on a platform has always fascinated the author. Simple location determination is further...

Automatic segmentation and classification of movement trajectories for transportation modes

The knowledge of the transportation mode used in a movement trajectory (derived in form of timestamped positions) is critical for applications such as travel behaviour studies. This thesis presents a method for segmenting movement data into single-mode segments and their classification with respect to the used transportation mode. The method...

Using semantic technologies to design a Spatio-Temporal database

This research deals with the problem of the enormous amounts of data that is streaming from the ‘sensor web’ into our computer systems. This data is useless to us unless it is properly stored, queried and presented by means of computer systems. These are typically databases, query engines, applications and user interfaces. In particular the...

Functionalities of geo-virtual environments to visualize urban projects

This Master of Science thesis states the taxonomy of functionalities and the visual materials of geo-virtual environments for the visualization of urban projects. The core of this visualization thesis is based on a requirement analysis process using the software approach of Requirement Engineering. It contains two important aspects. The...