Results 251 to 260 of about 100,121 (273)
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A spatial indexing method for the hexagon discrete global grid system

2010 18th International Conference on Geoinformatics, 2010
With the development of remote sensing technologies, computer friendly systems for the display and analysis of global geospatial information become more and more important. This paper concerns a method for computer representation and manipulation of global data based on multi-resolution subdivisions of regular polyhedra. A simple and efficient indexing
Jin Ben, Xiaochong Tong, Rongguo Chen
openaire   +1 more source

Efficient encoding and spatial operation scheme for aperture 4 hexagonal discrete global grid system

open access: yesInternational Journal of Geographical Information Science, 2013
Discrete global grid systems (DGGSs) are considered to be promising structures for global geospatial information representation. Square and triangular DGGSs have had the advantage over hexagonal ones in geospatial data processing over the past few ...
Xiaochong Tong, Jin Ben, Tao Pei
exaly   +1 more source

Quantification of Correlation Between Geometric Characteristics for The Hexagonal Discrete Global Grid Systems

IEEE International Geoscience and Remote Sensing Symposium
Although the discrete global grid systems can serve as a robust digital Earth framework, the geometric complexity of grid cells increase with the level of divisions due to the inherent topology of the spherical surface.
Fuli Luo, Qiang Lu, Zheng Wang
semanticscholar   +1 more source

Parallel calculation of flow directions on hexagonal discrete global grid systems

Geodesy and Cartography
Global small-scale hydrological modeling datasets are in demand in many geosciences. The results of corresponding simulations include flow directions, catchment area, watershed delineation and stream networks.
A. Shurygina, T. Samsonov, I. K. Lurie
semanticscholar   +1 more source

Central Place Indexing: Hierarchical Linear Indexing Systems for Mixed-Aperture Hexagonal Discrete Global Grid Systems

Cartographica, 2019
:Hexagonal discrete global grid systems (DGGSs) with integer spatial indexes are a promising new approach to designing geospatial data structures and location reference systems.
K. Sahr
semanticscholar   +1 more source

Geospatial Data Analysis for Global Maritime Risk Assessment Using the Discrete Global Grid System

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021
The effective management of the safety of navigation by coastguards is challenged by the complexity in quantifying and describing the relative risk of accidents occurrence. The discovery of patterns in observation data is reliant on the collection and analysis of significant volumes of relevant heterogenous spatial datasets.
Andrew Rawson   +2 more
openaire   +1 more source

Assessing the state of the art in Discrete Global Grid Systems: OGC criteria and present functionality

, 2020
The continuous growth of available geospatial data requires new methods for its integration, analysis, and visualization to be explored and implemented in software available to the geospatial commu...
B. Bondaruk, S. Roberts, C. Robertson
semanticscholar   +1 more source

Geospatial Data Organization Methods with Emphasis on Aperture-3 Hexagonal Discrete Global Grid Systems

Cartographica, 2019
:Digital Earth frameworks deal with data sets of different types collected from various sources. To effectively store, retrieve, and transmit these data sets, efficient multi-scale data representations that are compatible with the underlying structure of
Ali Mahdavi-Amiri   +2 more
semanticscholar   +1 more source

A discrete square global grid system based on the parallels plane projection

International Journal of Geographical Information Science, 2009
We developed a direct partitioning method to construct a seamless discrete global grid system (DGGS) with any resolution based on a two-dimensional projected plane and the earth ellipsoid. This DGGS is composed of congruent square grids over the projected plane and irregular ellipsoidal quadrilaterals on the ellipsoidal surface.
Ting Ma 0002   +4 more
openaire   +2 more sources

Building Datacube for Maritime Applications on Discrete Global Grid System

IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium, 2022
Anastasia Shurygina, German Titov
openaire   +1 more source

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