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Hyper-Sharpening: A First Approach on SIM-GA Data
This paper aims at defining a new paradigm in remote sensing image fusion: hypersharpening. In fact, due to the development of new instruments, thinking only in terms of pansharpening is reductive. Even though some terms as hyperspectral pansharpening already exist, there is not a suitable definition when multispectral/hyperspetral data are utilized as source to extract spatial details. After defining the hypersharpening framework, we draw the readers’ attention to some specific aspects and we propose and evaluate two hypersharpening methods. Experiments are carried out on the data produced by the updated version of SIM-GA imager, designed by Selex ES, that is composed by a panchromatic camera and two spectrometers in the VNIR and SWIR spectral ranges, respectively. Due to the different resolution factors among Panchromatic, VNIR and SWIR, we can apply hypersharpening to fuse SWIR data to VNIR resolution. Comparisons of hypersharpening with ”traditional” pansharpening show that hypersharpening results are more effective.
Selva Massimo, Aiazzi Bruno, Butera Francesco, Chiarantini Leandro, Baronti Stefano
Paper for Specialistic Magazine
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Volume:8, Issue: 6
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