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Algorithms
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Algorithms
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Algorithms
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Comparison of Different Algorithms to Orthorectify WorldView-2 Satellite Imagery

Authors: Oscar Rosario Belfiore; Claudio Parente;

Comparison of Different Algorithms to Orthorectify WorldView-2 Satellite Imagery

Abstract

Due to their level of spatial detail (pixel dimensions equal to or less than 1 m), very high-resolution satellite images (VHRSIs) need particular georeferencing and geometric corrections which require careful orthorectification. Although there are several dedicated algorithms, mainly commercial and free software for geographic information system (GIS) and remote sensing applications, the quality of the results may be inadequate in terms of the representation scale for which these images are intended. This paper compares the most common orthorectification algorithms in order to define the best approach for VHRSIs. Both empirical models (such as 2D polynomial functions, PFs; or 3D rational polynomial functions, RPFs) and rigorous physical and deterministic models (such as Toutin) are considered. Ground control points (GCPs) and check points (CPs)—whose positions in the image as, well as in the real world, are known—support algorithm applications. Tests were executed on a WorldView-2 (WV-2) panchromatic image of an area near the Gulf of Naples in Campania (Italy) to establish the best-performing algorithm. Combining 3D RPFs with 2D PFs produced the best results.

Country
Italy
Keywords

Polynomial functions, Industrial engineering. Management engineering, Digital elevation model; Orthorectification algorithms; Polynomial functions; Rational polynomial functions; Toutin rigorous model; WorldView-2 satellite imagery, QA75.5-76.95, orthorectification algorithms, T55.4-60.8, Orthorectification algorithms, polynomial functions, rational polynomial functions, Rational polynomial functions, orthorectification algorithms, polynomial functions, rational polynomial functions, Toutin rigorous model, WorldView-2 satellite imagery, digital elevation model, digital elevation model, Electronic computers. Computer science, Toutin rigorous model, Digital elevation model, WorldView-2 satellite imagery

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
14
Top 10%
Top 10%
Average
gold