Results 21 to 30 of about 14,345,702 (255)

Efficient Calculation of Distance Transform on Discrete Global Grid Systems

open access: yesISPRS 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
doaj   +1 more source

Area and shape distortions in open-source discrete global grid systems

open access: yesBig Earth Data, 2022
A Discrete Global Grid System (DGGS) is a type of spatial reference system that tessellates the globe into many individual, evenly spaced, and well-aligned cells to encode location and, thus, can serve as a basis for data cube construction.
Alexander Kmoch   +3 more
doaj   +1 more source

An Information Fusion Model between GeoSOT Grid and Global Hexagonal Equal Area Grid

open access: yesISPRS International Journal of Geo-Information, 2022
In order to cope with the rapid growth of spatiotemporal big data, data organization models based on discrete global grid systems have developed rapidly in recent years.
Qingmei Li   +4 more
doaj   +1 more source

THE TRANSFORM BETWEEN GEOGRAPHIC COORDINATES AND LOCATION CODES OF APERTURE 4 HEXAGONAL GRID SYSTEM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Discrete global grid system is a new data model which supports the fusion processing of multi-source geospatial data. In discrete global grid systems, all cell operations can be completed by codes theoretically, but most of current spatial data are in ...
R. Wang, J. Ben, J. Ben, Y. Li, L. Du
doaj   +1 more source

A Precision Evaluation Index System for Remote Sensing Data Sampling Based on Hexagonal Discrete Grids

open access: yesISPRS International Journal of Geo-Information, 2021
With the rapid development of earth observation, satellite navigation, mobile communication, and other technologies, the order of magnitude of the spatial data we acquire and accumulate is increasing, and higher requirements are put forward for the ...
Yue Ma   +6 more
doaj   +1 more source

Leveraging the Grid to Provide a Global Platform for Ubiquitous Computing Research [PDF]

open access: yes, 2003
The requirement for distributed systems support for Ubicomp has led to the development of numerous platforms, each addressing a subset of the overall requirements of ubiquitous systems.
Storz, Oliver   +3 more
core   +4 more sources

Adaptive path planning method for UAVs in complex environments

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
Path planning is an important problem in the field of unmanned aerial vehicles (UAVs), particularly in complex environments; however, existing path planning methods have certain limitations and yield poor results.
Zeyuan Ma, Jing Chen
doaj   +1 more source

Grid Global Behavior Prediction [PDF]

open access: yes, 2011
Complexity has always been one of the most important issues in distributed computing. From the first clusters to grid and now cloud computing, dealing correctly and efficiently with system complexity is the key to taking technology a step further.
Montes, Jesús   +5 more
core   +1 more source

Intelligent geospatial maritime risk analytics using the Discrete Global Grid System [PDF]

open access: yesBig Earth Data, 2021
Each year, accidents involving ships result in significant loss of life, environmental pollution and economic losses. The promotion of navigation safety through risk reduction requires methods to assess the spatial distribution of the relative likelihood of occurrence.
Andrew Rawson   +2 more
openaire   +5 more sources

Wāhi, a discrete global grid gazetteer built using linked open data

open access: yesInternational Journal of Digital Earth, 2017
Discrete global grid systems have become an important component of Digital Earth systems. However, previously there has not existed an easy way to map between named places (toponyms) and the cells of a discrete global grid system. The lack of such a tool
Benjamin Adams
doaj   +1 more source

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