Pansharpening by Complementing Compressed Sensing with Spectral Correction

Applied Sciences

卷:10

Shinichiro Omachi¹  Yoshihiro Sugaya¹  Naoko Tsukamoto¹ 

[1] Graduate School of Engineering, Tohoku University, Sendai, Miyagi 980-8579, Japan;

关键词: pansharpening;    spectrum correction;    intensity correction;    compressed sensing;    tradeoff process;    IKONOS;   

DOI  :  10.3390/app10175789

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown