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Claude Monetâs 1891 work A Haystack in the Evening Sun was found to be genuine by researchers at the University of Jyväskylä in the Department of Mathematical Information Technology. The research team revealed a layer of paint over Monetâs signature, and year of the oil painting by using a hyperspectral camera developed and produced by SPECIM. The study used the hyperspectral camera with an XRF device, which reveals the workâs elemental composition. The hyperspectral camera took an image of 256 different wavelengths simultaneously in the near-infrared region. The camera is principally operating as a scanner, which scans one line at a time. The optics include a prism structure which diffuses the lightâs wavelength order, a custom-made sensor is used capable of recording infrared radiation. When the camera is moved using the scanner an image of the whole picture can be obtained. www.specim.fi
