The present invention provides high-accuracy image input capable of correcting for uneven lighting due to the shape of the subject, its reflectivity, its positioning and ambient light conditions, without increasing the scale of the circuitry or its costs. The image input apparatus of the present invention...http://www.google.co.uk/patents/US7123755?utm_source=gb-gplus-sharePatent US7123755 - Image input apparatus, subject identification system, subject verification system and image input method
