Art Fakers v The Computer

Art historians have long used scientific tools to decide whether artworks are real or fakes - counting isotopes in lead-based paints and shining X-ray and infrared radiation on oil portraits to discover what lies beneath.
Now researchers at Dartmouth College have fed digitally scanned artworks into a computer and then used image-processing techniques to create statistics describing the pen and brush strokes. The computer analysis detects subtle differences in these strokes that help distinguish an artist from an imitator.
The scientists tried it out on drawings by Pieter Bruegel the Elder, the Flemish master. The computer program agreed with the Bruegel experts, grouping eight drawings attributed to Bruegel in one category and assigning the imitations to a separate pile.
Irish Art