Fig. 5
From: Discerning the painter’s hand: machine learning on surface topography
A A sample patch of side-length 80 pixels (4 mm) and the corresponding first five IMFs calculated using empirical mode decomposition. B The characteristic length scale of the features in each IMF for each artist. C Mean accuracy of attribution when the network is trained on each IMF alone, rather than the original height data. Results are shown for three different patch sizes: 80 pixels (4 mm), 200 pixels (10 mm), and 500 pixels (25 mm)