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ISPRS International Journal of Geo-Information, Volume 5, Issue 11

November 2016 - 25 articles

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Cover Story: Four actors are involved in the use and creation of this protocol for the collection of VGI vector data: Spatial data experts propose guidelines for the creation and the application of the protocol; VGI project community/initiators create the protocol based on the guidelines and the project special characteristics; IT experts implement software interfaces and environments for the application of the protocol; and users/contributors collect VGI following the protocol and provide feedback. As the actors in charge of defining the protocol, spatial data experts play a preliminary and crucial role. Nevertheless, the success of the protocol depends equally on all actors and a dynamic and continuous interaction between all of them is required. As long as the VGI project remains active, the protocol should be a living reference that constantly evolves with the actors’ feedback and mutual decisions. View the paper

Articles (25)

  • Article
  • Open Access
65 Citations
11,745 Views
18 Pages

Assessing Essential Qualities of Urban Space with Emotional and Visual Data Based on GIS Technique

  • Xin Li,
  • Ihab Hijazi,
  • Reinhard Koenig,
  • Zhihan Lv,
  • Chen Zhong and
  • Gerhard Schmitt

Finding a method to evaluate people’s emotional responses to urban spaces in a valid and objective way is fundamentally important for urban design practices and related policy making. Analysis of the essential qualities of urban space could be made b...

  • Article
  • Open Access
34 Citations
10,312 Views
23 Pages

Towards a Protocol for the Collection of VGI Vector Data

  • Peter Mooney,
  • Marco Minghini,
  • Mari Laakso,
  • Vyron Antoniou,
  • Ana-Maria Olteanu-Raimond and
  • Andriani Skopeliti

A protocol for the collection of vector data in Volunteered Geographic Information (VGI) projects is proposed. VGI is a source of crowdsourced geographic data and information which is comparable, and in some cases better, than equivalent data from Na...

  • Article
  • Open Access
10 Citations
6,424 Views
22 Pages

Belgium through the Lens of Rail Travel Requests: Does Geography Still Matter?

  • Jonathan Jones,
  • Christophe Cloquet,
  • Arnaud Adam,
  • Adeline Decuyper and
  • Isabelle Thomas

This paper uses on-line railway travel requests from the iRail schedule-finder application for assessing the suitability of that kind of big data for transportation planning and to examine the temporal and regional variations of the travel demand by...

  • Article
  • Open Access
2 Citations
5,540 Views
19 Pages

Morphological PDEs on Graphs for Image Processing on Surfaces and Point Clouds

  • Abderrahim Elmoataz,
  • François Lozes and
  • Hugues Talbot

Partial Differential Equations (PDEs)-based morphology offers a wide range of continuous operators to address various image processing problems. Most of these operators are formulated as Hamilton–Jacobi equations or curve evolution level set and morp...

  • Article
  • Open Access
8 Citations
5,420 Views
16 Pages

The Space-time prism (STP) is a key concept in time geography for analyzing human activity-travel behavior under various Space-time constraints. Most existing time-geographic studies use a straightforward algorithm to construct STPs in road networks...

  • Article
  • Open Access
20 Citations
8,500 Views
25 Pages

Within a digital map service environment, the rapid growth of Spatial Big-Data is driving new requirements for effective mechanisms for massive online vector map tile processing. The emergence of Not Only SQL (NoSQL) databases has resulted in a new d...

  • Article
  • Open Access
12 Citations
10,260 Views
18 Pages

2.5D map is a convenient and efficient approach to exploiting a massive three-dimensional (3D) city model in web GIS. With the rapid development of oblique airborne photogrammetry and photo-based 3D reconstruction, 3D city models are becoming more an...

  • Article
  • Open Access
3 Citations
4,355 Views
17 Pages

In pervasive computing, location-based services (LBSs) are valuable for mobile clients based on their current locations. LBSs use spatial window queries to enable useful applications for mobile clients. Based on skewed access patterns of mobile clien...

  • Article
  • Open Access
43 Citations
12,106 Views
13 Pages

Location-based service information, provided by social networks, provides new data sources and perspectives to research tourism activities, especially in highly populated mega-cities. Based on three years (2012–2014) of approximately 340,000 check-in...

  • Article
  • Open Access
17 Citations
6,351 Views
22 Pages

In the framework of Portuguese radio astronomical capacitation towards participation in the Square Kilometer Array (SKA) project, a site was selected for radio astronomical testing purposes and the development of a radio astronomical infrastructure....

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ISPRS Int. J. Geo-Inf. - ISSN 2220-9964Creative Common CC BY license