Pansharpening of hyperspectral images: a critical analysis of requirements and assessment on simulated PRISMA data

In this paper, pansharpening methods suitable for the spatial enhancement of hyperspectral images are critically discussed and assessed on simulated data from the upcoming PRISMA mission, featuring a panchromatic camera mounted on the hyperspectral payload. Since most fusion techniques are limited to the fusion of multispectral (MS) images with panchromatic (Pan) images, the focus shall be on the extension of such methods towards hyperspectral (HS) images. In particular, the impact of the bandwidth of Pan on fusion performances will be analyzed and discussed