An electro-optical system which integrates the image pattern information, extracted from a plurality of image frames and identified as belonging to a common candidate object, to form a composite image pattern of the candidate object which may be accurately classified with respect to a reference object...http://www.google.co.uk/patents/US4396903?utm_source=gb-gplus-sharePatent US4396903 - Electro-optical system for correlating and integrating image data from frame-to-frame
