Digital imaging helps stop art forgeries; Computer program can scrutinize artist brush stroke

PRINCETON, N.J. — An artist’s brush stroke, it seems, is as individual as a signature. In the world of art deals, where authenticity defines the value of a painting, those brush strokes determine whether a work has been painted by a master or is worth little more than the canvas it’s painted on. Helping the art world is the emerging scientific field of digital image processing, which aids in discerning masterpieces from works of cunning mischief.
At the cutting edge is a team of two Princeton University graduate students and their adviser, who are being featured in the PBS NOVA series Science Now.

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