Fig. 4 | Scientific Reports

Fig. 4

From: Blind and endmember guided autoencoder model for unmixing the absorbance spectra of phytoplankton pigments

Fig. 4

Improved stability of abundance estimates for pigment endmembers using the 10 best EGAE models (MSE loss) compared to the 10 best BAE models (MSE loss) for test set. (a) (e) and (i) show unmixed endmembers resembling the chl-a and fx spectra from the literature using the BAE models. (c) (g) and (k) show fixed endmembers using the reference spectra for chl-a, fx and pc for the EGAE models. (b), (f) and (j) show regression lines of scatter plots of ground truth and abundance estimates in BAE models, showing considerable variation, while (d) (h) and (l) demonstrate enhanced stability with EGAE models.

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