Nonlinear unmixing of hyperspectral images: models and algorithms
This is an incremental review paper that summarizes existing work for researchers in geoscience and image processing.
The paper addresses the limitations of the linear mixing model (LMM) for unmixing hyperspectral images, such as multi-scattering effects, by providing an overview of recent advances in nonlinear unmixing models and algorithms.
When considering the problem of unmixing hyperspectral images, most of the literature in the geoscience and image processing areas relies on the widely used linear mixing model (LMM). However, the LMM may be not valid and other nonlinear models need to be considered, for instance, when there are multi-scattering effects or intimate interactions. Consequently, over the last few years, several significant contributions have been proposed to overcome the limitations inherent in the LMM. In this paper, we present an overview of recent advances in nonlinear unmixing modeling.