Hyper-Sharpening: A First Approach on SIM-GA Data

This paper aims at defining a new paradigm (hypersharpening) in remote sensing image fusion. In fact, due to the development of new instruments, thinking only in terms of pansharpening is reductive. Even though some expressions as hyperspectral (HS) pansharpening already exist, there is not a suitab...

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Vydáno v:IEEE journal of selected topics in applied earth observations and remote sensing Ročník 8; číslo 6; s. 3008 - 3024
Hlavní autoři: Selva, Massimo, Aiazzi, Bruno, Butera, Francesco, Chiarantini, Leandro, Baronti, Stefano
Médium: Journal Article
Jazyk:angličtina
Vydáno: IEEE 01.06.2015
Témata:
Correlation
Dimensionality reduction
hypersharpening
hyperspectral (HS)
Hyperspectral sensors
image fusion
Instruments
Noise
pansharpening
remote sensing
Spatial resolution
Dimensionality reduction
pansharpening
hyperspectral (HS)
remote sensing
image fusion
hypersharpening
ISSN:1939-1404, 2151-1535
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Shrnutí:This paper aims at defining a new paradigm (hypersharpening) in remote sensing image fusion. In fact, due to the development of new instruments, thinking only in terms of pansharpening is reductive. Even though some expressions as hyperspectral (HS) pansharpening already exist, there is not a suitable definition when multispectral/hyperspectral data are used as source to extract spatial details. After defining the hypersharpening framework, we draw the readers' attention to its peculiar characteristics, by proposing and evaluating two hypersharpening methods. Experiments are carried out on the data produced by the updated version of SIM-GA imager, designed by Selex ES, which is composed by a panchromatic camera and two spectrometers in the VNIR and SWIR spectral ranges, respectively. Owing to the different resolution factors among panchromatic, VNIR and SWIR data sets, we can apply hypersharpening to fuse SWIR data to VNIR resolution. Comparisons of hypersharpening with "traditional" pansharpening show hypersharpening is more effective.
ISSN:1939-1404
2151-1535
DOI:10.1109/JSTARS.2015.2440092