Pixel-wise linear/non linear nonnegative matrix factorization for unmixing of hyperspectral data
Résumé
Nonlinear spectral unmixing is a challenging and important task in hyperspectral image analysis. The kernel-based bi-objective nonnegative matrix factorization (Bi-NMF) has shown its usefulness in nonlinear unmixing; However, it suffers several issues that prohibit its practical application. In this work, we propose an unsupervised nonlinear unmixing method that overcomes these weaknesses. Specifically, the new method introduces into each pixel a parameter that adjusts the nonlinearity therein. These parameters are jointly optimized with endmembers and abundances, using a carefully designed objective function by multiplicative update rules. Experiments on synthetic and real datasets confirm the effectiveness of the proposed method.
Domaines
Machine Learning [stat.ML] Traitement du signal et de l'image [eess.SP] Statistiques [math.ST] Traitement du signal et de l'image [eess.SP] Réseau de neurones [cs.NE] Apprentissage [cs.LG] Ordinateur et société [cs.CY] Vision par ordinateur et reconnaissance de formes [cs.CV] Intelligence artificielle [cs.AI]| Origine | Fichiers produits par l'(les) auteur(s) |
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