2015
DOI: 10.1117/1.jrs.9.097291
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Enhanced hyperspherical color space fusion technique preserving spectral and spatial content

Abstract: The newly developed hyperspherical color space (HCS) fusion method is a cost-effective panchromatic (pan) sharpening technique, but it still suffers from local spectral distortion and insufficient overall spatial details. This paper attempts to improve the HCS fusion method by combining the spectrum gain modulation and wavelet transformation and presents a novel fusion method called enhanced HCS (EHCS) to mitigate the mentioned issue. This method mainly contains three steps. (1) The proposed method extracts th… Show more

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Cited by 14 publications
(7 citation statements)
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References 29 publications
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“…We estimate only the 40m->20m super-resolution proxy for reasons mentionned in Section IV. Nevertheless, compared to the litterature [22], [23], [6], our global averages of 0.941 ≤ Q ≤ 0.994, 2.08 ≤ ERGAS ≤ 4.49 and 2.21 ≤ SAM ≤ 4.87 in the different regions of interest for Sentinel-2 data are consistent with the state of art for panchromatic sharpening, albeit without a panchromatic band.…”
Section: Discussionsupporting
confidence: 79%
“…We estimate only the 40m->20m super-resolution proxy for reasons mentionned in Section IV. Nevertheless, compared to the litterature [22], [23], [6], our global averages of 0.941 ≤ Q ≤ 0.994, 2.08 ≤ ERGAS ≤ 4.49 and 2.21 ≤ SAM ≤ 4.87 in the different regions of interest for Sentinel-2 data are consistent with the state of art for panchromatic sharpening, albeit without a panchromatic band.…”
Section: Discussionsupporting
confidence: 79%
“… Hyperspherical color sharpening (HCS): This pansharpening algorithm is designed specifically for WV-2 by [ 49 ] based on the transformation between any native color space and the hyperspherical color space. Once transformed into HCS, the intensity can be scaled without changing the color, essential for the HCS pansharpening algorithm [ 15 , 50 ]. The transformation to HCS can be made from any native color space.…”
Section: Methodsmentioning
confidence: 99%
“…For satellite images, panchromatic sharpening is usually used to improve image resolution. The panchromatic sharpening method ranges from the simplest multispectral band renormalization to more advanced decomposition technology [39][40][41]. By estimating the contribution of each multispectral band to the panchromatic band and solving each correlation component, the spatial resolution of the multispectral image can be improved and the spectral distortion can be reduced simultaneously.…”
Section: The Super-resolution Algorithmmentioning
confidence: 99%