FIGURE 1. Sparse-coding analysis of artistic style.

From the following article:

Applied mathematics: The statistics of style

Bruno A. Olshausen & Michael R. DeWeese

Nature 463, 1027-1028(25 February 2010)

doi:10.1038/4631027a

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Hughes and colleagues1 show that small image patches taken from a collection of authentic works by Pieter Bruegel the Elder (a) can be used to generate a 'dictionary' of visual elements attuned to the statistics of his style (b). A test image (c) can then be authenticated by recreating it with a combination of dictionary elements. If recreation of the test image requires only a few dictionary elements, it is sparse, and labelled 'authentic', whereas if accurate encoding of the test image requires many dictionary elements, it is labelled as an 'imitation'.

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