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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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Article

14 Citations

3,835 Views

18 Pages

Long- and Short-Term Preference Modeling Based on Multi-Level Attention for Next POI Recommendation

Xueying Wang,
Yanheng Liu,
Xu Zhou,
Zhaoqi Leng and
Xican Wang

ISPRS Int. J. Geo-Inf.2022, 11(6), 323;https://doi.org/10.3390/ijgi11060323

26 May 2022

The next point-of-interest (POI) recommendation is one of the most essential applications in location-based social networks (LBSNs). Its main goal is to research the sequential patterns of user check-in activities and then predict a user’s next...

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Article

6 Citations

4,807 Views

22 Pages

Efficient Calculation of Distance Transform on Discrete Global Grid Systems

Meysam Kazemi,
Lakin Wecker and
Faramarz Samavati

ISPRS Int. J. Geo-Inf.2022, 11(6), 322;https://doi.org/10.3390/ijgi11060322

25 May 2022

Geospatial data analysis often requires the computing of a distance transform for a given vector feature. For instance, in wildfire management, it is helpful to find the distance of all points in an area from the wildfire’s boundary. Computing...

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Article

16 Citations

4,707 Views

25 Pages

Analysis of the Characteristics and Spatial Pattern of the Catering Industry in the Four Central Cities of the Yangtze River Delta

Weiwu Wang,
Shan Wang,
Huan Chen,
Lingjun Liu,
Tianle Fu and
Yuxin Yang

ISPRS Int. J. Geo-Inf.2022, 11(6), 321;https://doi.org/10.3390/ijgi11060321

24 May 2022

The development of the catering industry in big cities is of great significance for countries to improve the quality of development and improve people’s living standards. In recent years, the urban catering industry has effectively promoted the...

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

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