A method and a device for Comparing an image element with a corresponding area of a Picture Element pattern.

摘要

Method and apparatus for Comparing an element selected image with an image Element pattern. Is to check the brightness value of the image Element selected with a default interval of brightness values corresponding to a common Matrix of image Elements defined in the speed of the image Element pattern.The Apparatus includes a continuous Band (1) on which is printed a multiplicity of documents, whose band is passed at high speed around a roller (3) is explored and along a Transverse Zone (4) by means of a camera (5) line scan and an encoder; of Shaft (6) that provides information to a Control Unit (7).Is used for the inspection of documents, such as banknotes.