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ISPRS International Journal of Geo-Information, Volume 6, Issue 4

April 2017 - 34 articles

Cover Story: Since the appearance of Spatial Data Infrastructure (SDI), there has been an increase in spatial data available on the web. This situation raises research issues, in terms of identifying the content actually accessible and its impact on local governance. Our study proposes a mixed methodology applied to 45 French infrastructures, to compare the objectives stated by their promoters and their actual content. The methodology, based on an analysis of interviews with SDI coordinators, as well as an exploration of over 160,000 metadata in their catalogues, produced results concerning data accessibility, stakeholder networks, the interoperability of tools, and informational equality. Despite the proactive stance of SDI promoters, only 16% of data are open-access. Their interoperability remains restricted to specific types of actors. Although geocollaboration organised by SDIs is very active, it only concerns the public sector. These disparities also concern their spatial distribution.
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Articles (34)

  • Article
  • Open Access
12 Citations
6,788 Views
18 Pages

A Procedural Construction Method for Interactive Map Symbols Used for Disasters and Emergency Response

  • Guoqiang Peng,
  • Songshan Yue,
  • Yuting Li,
  • Zhiyao Song and
  • Yongning Wen

The timely and accurate mapping of dynamic disasters and emergencies is an important task that is necessary for supporting the decision-making that can improve the efficiency of rescue and response efforts. The existing emergency symbol libraries are...

  • Article
  • Open Access
21 Citations
7,137 Views
18 Pages

Integration of GIS and Moving Objects in Surveillance Video

  • Yujia Xie,
  • Meizhen Wang,
  • Xuejun Liu and
  • Yiguang Wu

This paper discusses the integration of a geographic information system (GIS) and moving objects in surveillance videos (“moving objects” hereinafter) by using motion detection, spatial mapping, and fusion representation techniques. This integration...

  • Article
  • Open Access
3 Citations
6,153 Views
18 Pages

Geospatial transformations in the form of reprojection calculations for large datasets can be computationally intensive; as such, finding better, less expensive ways of achieving these computations is desired. In this paper, we report our efforts in...

  • Article
  • Open Access
7 Citations
5,309 Views
17 Pages

More and more vector-based cellular automata (VCA) models have been built to leverage parallel computing to model rapidly changing cities and urban regions. During parallel simulation, common task decomposition methods based on space partitioning, e....

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ISPRS Int. J. Geo-Inf. - ISSN 2220-9964