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Pansharpening by Complementing Compressed Sensing with Spectral Correction

Authors :
Yoshihiro Sugaya
Naoko Tsukamoto
Shinichiro Omachi
Source :
Applied Sciences, Vol 10, Iss 5789, p 5789 (2020), Applied Sciences, Volume 10, Issue 17
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

Pansharpening (PS) is a process used to generate high-resolution multispectral (MS) images from high-spatial-resolution panchromatic (PAN) and high-spectral-resolution multispectral images. In this paper, we propose a method for pansharpening by focusing on a compressed sensing (CS) technique. The spectral reproducibility of the CS technique is high due to its image reproducibility, but the reproduced image is blurry. Although methods of complementing this incomplete reproduction have been proposed, it is known that the existing method may cause ringing artifacts. On the other hand, component substitution is another technique used for pansharpening. It is expected that the spatial resolution of the images generated by this technique will be as high as that of the high-resolution PAN image, because the technique uses the corrected intensity calculated from the PAN image. Based on these facts, the proposed method fuses the intensity obtained by the component substitution method and the intensity obtained by the CS technique to move the spatial resolution of the reproduced image close to that of the PAN image while reducing the spectral distortion. Experimental results showed that the proposed method can reduce spectral distortion and maintain spatial resolution better than the existing methods.

Details

Language :
English
ISSN :
20763417
Volume :
10
Issue :
5789
Database :
OpenAIRE
Journal :
Applied Sciences
Accession number :
edsair.doi.dedup.....6463fca77f8fd32a61ae5fb2bd9fb9de