The Role of Volunteered Geographic Information towards 3D Property Cadastral Systems

General mapping, and particularly cadastral mapping, is a highly expensive activity and many governments are no longer willing to continue covering the even increasing costs of surveys. As far as Portugal is concerned – our ultimate field of interest – ongoing 2D property cadastre surveys have revealed to be rather complex, laborious and...

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...

3D Cadastre Development in Hungary

Geometric part of the Unified Hungarian Land Registry (Cadastral maps) has been operating in standardized environment since 1996. MSZ 7772-1 Standard on Digital Base Map (developed by Institute of Geodesy Cartography and Remote Sensing, FÖMI) — based on the pre ISO and CEN standards on Geographic Information — defines a 3D relational database...

Validation of geographical datasets against spatial constraints at conceptual level

A huge amount of geographical datasets are becoming available in distributed environments like Spatial Data Infrastructures (SDI). These datasets are very heterogeneous since they come from different independent sources and surveys and are structured in different formats. In the context of a national SDI that needs to assure an adequate quality...

Managing the Lagos megacity and its geospatial iperative

Lagos has assumed the Megacity status and it is projected to have its population doubled in the first quarter of this century. The Megacity has extended beyond the administrative boundary of the state, which is also one of the fastest growing urban agglomerations in the world. Information is the most vital component of urban management; however,...

Models of dynamic data for emergency response: A comparative study

The first hours after a disaster happens are very chaotic and difficult but perhaps the most important for successfully fighting the consequences, saving human lives and reducing damages in private and public properties. Despite some advances, complete inventory of the information needed during the emergency response remains challenging. In the...

Successful SDIs: Does the Marine Geo-sector provide a much-needed beacon?

With Directive 2007/2/EC of the European Parliament and of the Council of 14 March 2007 establishing an Infrastructure for Spatial Information in the European Community (INSPIRE) in the process of being implemented in most EU Member States, the aim is to develop a European spatial data infrastructure. INSPIRE is to facilitate the exchange of...

Networking, networking, networking

Organizational and cultural assessment of GIIs: The introduction of a new model

A geographic information infrastructure (GII) develops gradually. Several development stages may be identified each with unique characteristics. Also the organisational characteristics are likely to vary per stage. This knowledge was used to develop an SDI maturity matrix as presented by Kok and Van Loenen (2005), further developed in Van Loenen...

Developing geographic information infrastructure: The role of information policies

Within information societies, information availability is a key issue affecting societyâs well being. The infrastructure underlying the foundation of the information society may be referred to as the information infrastructure. A geographic information infrastructure (GII) supports the information infrastructure with regard to geographic...

Synchronisation of "Work Processes" vs. "Geo-information", a RWS case

The main research questin is: Which geographic data sets can support the need of information regarding the work processes 'Maintenance of the Highway Network' at the Dienstkring and what level of quality of the geographic data is necessary. The current situation at the Directorate-General increases the complexity of the research question....

Spatial data infrastructure and policy development in Europe and the United States

Many national governments throughout the world are involved in developing spatial data infrastructures (SDI) to facilitate the availability of information in such a way that the needs of the agencies, organization, citizens, commerce, and society in general are met. This book covers some of the most prevalent policy issues evolving around...

The impact of access policies in the development of a national GDI

Within the context of Geodata- and Service Infrastructures (GDI) access-to-government data policies are important the existence and successful use of the data, and the success of the GDI itself. Two access doctrines are dominant in the literature: open access policies and cost recovery policies. Many researches have attempted to compare open...

Dutch NGII on course: a practical approach on implementing a vision

Many countries are developing or starting to develop National Geographic Information Infrastructures (NGIIs). The Netherlands Council for Geo-information stimulates the development and further implementation of the NGII in the Netherlands. The publication of the visionary Ravi-document Structuurschets in 1992, promoting the establishment of four...