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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
2 Citations
3,376 Views
19 Pages

Integration of Geostatistical and Sentinal-2AMultispectral Satellite Image Analysis for Predicting Soil Fertility Condition in Drylands

  • Mohamed S. Shokr,
  • Yasser S. A. Mazrou,
  • Mostafa A. Abdellatif,
  • Ahmed A. El Baroudy,
  • Esawy K. Mahmoud,
  • Ahmed M. Saleh,
  • Abdelaziz A. Belal and
  • Zheli Ding

For modelling and predicting soil indicators to be fully operational and facilitate decision-making at any spatial level, there is a requirement for precise spatially referenced soil information to be available as input data. This paper focuses on sh...

  • Article
  • Open Access
2 Citations
2,368 Views
15 Pages

Accessibility plays an important role in alleviating rural poverty. Previous studies have explored the relationship between accessibility and rural poverty, but they offer limited evidence of the collective influence of multiscale transport accessibi...

  • Article
  • Open Access
10 Citations
3,252 Views
21 Pages

Context-Aware Matrix Factorization for the Identification of Urban Functional Regions with POI and Taxi OD Data

  • Changfeng Jing,
  • Yanru Hu,
  • Hongyang Zhang,
  • Mingyi Du,
  • Shishuo Xu,
  • Xian Guo and
  • Jie Jiang

The identification of urban functional regions (UFRs) is important for urban planning and sustainable development. Because this involves a set of interrelated processes, it is difficult to identify UFRs using only single data sources. Data fusion met...

  • Article
  • Open Access
9 Citations
2,794 Views
22 Pages

The UK, as elsewhere, has seen an accelerating trend of bank branch closures and reduced opening hours since the early 2000s. The reasons given by the banks are well rehearsed, but the impact assessments they provide to justify such programs and sign...

  • Article
  • Open Access
10 Citations
4,132 Views
21 Pages

The traditional methods of estimating housing vacancies rarely use daytime housing exterior images to estimate housing vacancy rates (HVR). In view of this, this study proposed the idea and method of estimating urban housing vacancies based on daytim...

  • Article
  • Open Access
2,329 Views
26 Pages

Topographic maps show both physical and artificial entities of the surface of the Earth which represent distinct features forming the building blocks in map composition. Their portrayal on the map is subject to constraints dependent on the method of...

  • Editorial
  • Open Access
2 Citations
5,677 Views
5 Pages

Geo-information technology plays a critical role in urban planning and management, land resource quantification, natural disaster risk and damage assessment, smart city development, land cover change modeling and touristic flow management. In particu...

  • Article
  • Open Access
2 Citations
3,180 Views
18 Pages

Investigating Factors Related to Criminal Trips of Residential Burglars Using Spatial Interaction Modeling

  • Kazuki Hirama,
  • Kaeko Yokota,
  • Yusuke Otsuka,
  • Kazumi Watanabe,
  • Naoto Yabe and
  • Yoshinori Hawai

This study used spatial interaction modeling to examine whether origin-specific and destination-specific factors, distance decay effects, and spatial structures explain the criminal trips of residential burglars. In total, 4041 criminal trips committ...

  • Article
  • Open Access
16 Citations
3,170 Views
22 Pages

The purpose of this paper was to produce the geological hazard-susceptibility map for the Changbai Mountain area affected by volcanic activity. First, 159 landslides and 72 debris flows were mapped in the Helong city are based on the geological disas...

  • Article
  • Open Access
5 Citations
3,295 Views
17 Pages

EmergEventMine: End-to-End Chinese Emergency Event Extraction Using a Deep Adversarial Network

  • Jianzhuo Yan,
  • Lihong Chen,
  • Yongchuan Yu,
  • Hongxia Xu,
  • Qingcai Gao,
  • Kunpeng Cao and
  • Jianhui Chen

With the rapid development of the internet and social media, extracting emergency events from online news reports has become an urgent need for public safety. However, current studies on the text mining of emergency information mainly focus on text c...

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