Pansharpening aims at fusing a panchromatic image with a multispectral one, to generate an image with the high spatial resolution of the former and the high spectral resolution of the latter. In the last decade, many algorithms have been presented in the literature for pansharpening using multispectral data. With the increasing availability of hyperspectral systems, these methods are now being adapted to hyperspectral images. In this work, we compare new pansharpening techniques designed for hyperspectral data with some of the state of the art methods for multispectral pansharpening, which have been adapted for hyperspectral data. Eleven methods from different classes (component substitution, multiresolution analysis, hybrid, Bayesian and matrix factorization) are analyzed. These methods are applied to three datasets and their effectiveness and robustness are evaluated with widely used performance indicators. In addition, all the pansharpening techniques considered in this paper have been implemented in a MATLAB toolbox that is made available to the community.
@article{arxiv.1504.04531,
title = {Hyperspectral pansharpening: a review},
author = {Laetitia Loncan and Luis B. Almeida and José M. Bioucas-Dias and Xavier Briottet and Jocelyn Chanussot and Nicolas Dobigeon and Sophie Fabre and Wenzhi Liao and Giorgio A. Licciardi and Miguel Simões and Jean-Yves Tourneret and Miguel A. Veganzones and Gemine Vivone and Qi Wei and Naoto Yokoya},
journal= {arXiv preprint arXiv:1504.04531},
year = {2015}
}