@article{3070512, title = "On the unmixing of MEx/OMEGA hyperspectral data", author = "Themelis, K.E. and Schmidt, F. and Sykioti, O. and Rontogiannis, A.A. and Koutroumbas, K.D. and Daglis, I.A.", journal = "Planetary and Space Science", year = "2012", volume = "68", number = "1", pages = "34-41", issn = "0032-0633", doi = "10.1016/j.pss.2011.11.015", keywords = "Comparative studies; Data sets; Estimation performance; HyperSpectral; Hyperspectral Data; Hyperspectral imagery; Linear unmixing; MAP estimator; MARS-EXPRESS; Maximum A posteriori probabilities; OMEGA data; Unmixing, Algorithms; Remote sensing, Estimation", abstract = "This paper presents a comparative study of three different types of estimators used for supervised linear unmixing of two MEx/OMEGA hyperspectral cubes. The algorithms take into account the constraints of the abundance fractions, in order to get physically interpretable results. Abundance maps show that the Bayesian maximum a posteriori probability (MAP) estimator proposed in Themelis and Rontogiannis (2008) outperforms the other two schemes, offering a compromise between complexity and estimation performance. Thus, the MAP estimator is a candidate algorithm to perform ice and minerals detection on large hyperspectral datasets. © 2011 Elsevier Ltd." }