Results 1 to 10 of about 50 (29)
International Journal of Digital Earth, 2022 Although research on the discrete global grid systems (DGGSs) has become an essential issue in the era of big earth data, there is still a gap between the efficiency of current encoding and operation schemes for hexagonal DGGSs and the needs of practical
Long Zhao +4 more
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Indexing Mixed Aperture Icosahedral Hexagonal Discrete Global Grid Systems
ISPRS International Journal of Geo-Information, 2020 Discrete global grid systems (DGGSs) are an emerging multiresolution 3D model used to integrate and analyze big earth data. The characteristic of multiresolution is usually realized by hierarchically subdividing cells on the sphere using certain ...
Rui Wang +3 more
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Efficient Calculation of Distance Transform on Discrete Global Grid Systems
ISPRS International Journal of Geo-Information, 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 a distance
Meysam Kazemi +2 more
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General Method for Extending Discrete Global Grid Systems to Three Dimensions
ISPRS International Journal of Geo-Information, 2020 Geospatial sensors are generating increasing amounts of three-dimensional (3D) data. While Discrete Global Grid Systems (DGGS) are a useful tool for integrating geospatial data, they provide no native support for 3D data.
Benjamin Ulmer +2 more
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Constructing Efficient Mesh-Based Global Grid Systems with Reduced Distortions
ISPRS International Journal of Geo-InformationRecent advancements in geospatial technologies have significantly expanded the volume and diversity of geospatial data, unlocking new and innovative applications that require novel Geographic Information Systems (GIS).
Lakin Wecker +2 more
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Construction of inherent geometric pattern for equal-area hexagonal discrete global grid systems
International Journal of Digital EarthDiscrete Global Grid Systems (DGGSs) are hierarchical frameworks that provide seamless global coverage and enable the efficient processing and analysis of heterogeneous geospatial data.
Fuli Luo +5 more
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ISPRS International Journal of Geo-Information, 2020 With the huge volume of location-based point data being generated by Internet of Things (IoT) devices and subsequent rising interest from the Digital Earth community, a need has emerged for spatial operations that are compatible with Digital Earth ...
David Bowater, Monica Wachowicz
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W-Hilbert: A W-shaped Hilbert curve and coding method for multiscale geospatial data index
International Journal of Applied Earth Observations and Geoinformation, 2023 Space-filling curves (SFCs) are commonly used in discrete global grid systems (DGGSs) and applied to efficient indices and queries of massive geospatial data.
Yi Lei +5 more
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Construction of rhombic triacontahedron discrete global grid systems
International Journal of Digital Earth, 2022 Discrete Global Grid System (DGGS) is a new multi-resolution geospatial data modeling and processing scheme for the digital earth. The icosahedron is commonly regarded as an ideal polyhedron for constructing DGGSs with small distortions; however, the ...
Xiaoyu Liang, Jin Ben, Rui Wang
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GIScience research challenges for realizing discrete global grid systems as a Digital Earth
Big Earth Data, 2022 Increasing data resources are available for documenting and detecting changes in environmental, ecological, and socioeconomic processes. Currently, data are distributed across a wide variety of sources (e.g.
Majid Hojati +3 more
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