WORLD WIDE CURRENCY INSPECTION

摘要

An apparatus for detection of flaws in currency having multiple misregistered images. Optical means scan a test note to provide a plurality of outputs each representative of a particular patch value of a particular scan line of the test note. Generating means provide a plurality of outputs each representative of a particular patch value of a particular scan line of a reference note which is generated in real time as the test note is scanned. The generating means includes means to insure that each generated reference patch value is provided for comparison with the corresponding patch value of the test note. Each reference patch value is generated for any value of misregistration between the multiple images within a predetermined tolerance.