HEALPix: A Framework for High-Resolution Discretization and Fast Analysis of Data Distributed on the Sphere¶
Gorski, K. M., Hivon, E., Banday, A. J., Wandelt, B. D., Hansen, F. K., Reinecke, M., & Bartelmann, M. (2005). HEALPix: A Framework for High-Resolution Discretization and Fast Analysis of Data Distributed on the Sphere. The Astrophysical Journal, 622(2), 759-771.
Cited by¶
1 citation across 1 artifact.
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Primes¶
- Spatial Indexing
- And in astronomy, sky surveys index objects by celestial coordinates so that "what's in this patch of sky?" becomes a region query on a pre-built tiling.
This sourceDefines the hierarchical equal-area pixelization of the sphere whose hierarchical indices give neighboring sky tiles neighboring addresses, used as a database index so 'what is in this patch of sky?' becomes an output-sensitive region query on a pre-built tiling.
Supported in partVerified against the work's full text
Defines a hierarchical equal-area sky tiling whose tree indices keep nearby sky pixels nearby, aiding neighbour search and patch extraction; no explicit patch-of-sky database region query.
“A simple argument in favour of this states that the data elements ... are also nearby in the tree structure of the data”
- And in astronomy, sky surveys index objects by celestial coordinates so that "what's in this patch of sky?" becomes a region query on a pre-built tiling.
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