MULTI-SPECTRAL SCANNING SYSTEM

摘要

A method of capturing and processing a multi-spectral image of an object comprises placing the object on a flat-bed scanner (1), using the flat-bed scanner (1) to illuminate the object successively with monochromatic light at a series of wavelengths to produce a plurality of images together forming a composite multi- spectral image, determining a spectral profile of at least a portion of the multi- spectral image and comparing the spectral profile to a stored spectral profile (22, 24).