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ISPRS International Journal of Geo-Information, Volume 11, Issue 6

June 2022 - 33 articles

Cover Story: Geospatial data analysis often requires computing a distance transform (DT) for a given vector feature. Computing a DT on traditional geographic information systems (GIS) is usually based on image processing methods, which are prone to distortion resulting from flat maps. Discrete global grid systems (DGGS) are relatively new low-distortion globe-based GIS that discretize the Earth into highly regular cells. In this paper, we introduce an efficient DT algorithm for DGGS that exploits the hierarchy of a DGGS and its mathematical properties. We demonstrate that our method is efficient and has minimal distortion by comparing its speed and distortion with the DT methods used in traditional GIS and general 3D meshes. View this paper
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Articles (33)

  • Article
  • Open Access
21 Citations
4,169 Views
14 Pages

Potential of the Geometric Layer in Urban Digital Twins

  • Andreas Scalas,
  • Daniela Cabiddu,
  • Michela Mortara and
  • Michela Spagnuolo

A urban digital twin is the virtual representation of real assets, processes, systems and subsystems of a city. It uses and integrates heterogeneous data to learn and evolve with the physical city, providing support to monitor the current status and...

  • Article
  • Open Access
19 Citations
4,400 Views
22 Pages

As the passenger railway network is expanding and improving, the internal connections and interdependence in the network are rising. Once a sudden geological hazard occurs and damages the network structure, the train service is prone to large-scale h...

  • Article
  • Open Access
23 Citations
5,242 Views
24 Pages

A Comprehensive Spatio-Temporal Model for Subway Passenger Flow Prediction

  • Zhihao Zhang,
  • Yong Han,
  • Tongxin Peng,
  • Zhenxin Li and
  • Ge Chen

Accurate subway passenger flow prediction is crucial to operation management and line scheduling. It can also promote the construction of intelligent transportation systems (ITS). Due to the complex spatial features and time-varying traffic patterns...

  • Article
  • Open Access
8 Citations
3,115 Views
13 Pages

A Three-Dimensional Visualization and Optimization Method of Landslide Disaster Scenes Guided by Knowledge

  • Lin Fu,
  • Jun Zhu,
  • Jianbo Lai,
  • Weilian Li,
  • Pei Dang,
  • Lingzhi Yin,
  • Jialuo Li,
  • Yukun Guo and
  • Jigang You

The rapid acquisition of deposit volume information and dynamic modeling, as well as the visualization of disaster scenes, have great significance for the sharing of landslide information and the management of emergency rescue. However, existing meth...

  • Article
  • Open Access
4 Citations
6,216 Views
15 Pages

The purpose of this study was to explore the impact of different design methods of bus route maps and dynamic real-time information on the bus route map search efficiency and cognitive load. A total of 32 participants were tested through an experimen...

  • Article
  • Open Access
14 Citations
5,619 Views
26 Pages

3D Modeling Method for Dome Structure Using Digital Geological Map and DEM

  • Xian-Yu Liu,
  • An-Bo Li,
  • Hao Chen,
  • Yan-Qing Men and
  • Yong-Liang Huang

Geological maps have wide coverage with low acquisition difficulty. When other geological survey data are scarce, they are a valuable source of geological structure information for geological modeling. However, for structures with large deformation,...

  • Article
  • Open Access
11 Citations
3,169 Views
16 Pages

As a unique phenomenon of soil erosion in the granite-red-soil hilly area of southern China, Benggang has seriously affected agricultural development and regional sustainable development. However, few studies have focused on the driving factors and t...

  • Article
  • Open Access
13 Citations
6,093 Views
26 Pages

The causes of bushfires are extremely complex, and their scale of burning and probability of occurrence are influenced by the interaction of a variety of factors such as meteorological factors, topography, human activity and vegetation type. An in-de...

  • Article
  • Open Access
13 Citations
4,327 Views
21 Pages

The increasing popularity of intercity commuting is affecting regional development and people’s lifestyles. A key approach to addressing the challenges brought about by intercity commuting is analyzing its determinants. Although spatial nonstat...

  • Article
  • Open Access
4 Citations
5,095 Views
26 Pages

Quality Assurance for Spatial Research Data

  • Michael Wagner and
  • Christin Henzen

In Earth System Sciences (ESS), spatial data are increasingly used for impact research and decision-making. To support the stakeholders’ decision, the quality of the spatial data and its assurance play a major role. We present concepts and a wo...

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