DOCUMENT AUTHENTICATION USING TEMPLATE MATCHING WITH FAST MASKED NORMALIZED CROSS-CORRELATION

摘要

A security document authentication device and a method for authenticating a document are disclosed. The system comprises an image capture interface to receive a captured image of at least a portion of an article. The portion of the article includes a security image having a first retroreflective feature and a second retroreflective feature, fast masked normalized cross-correlation module and a display. The fast masked normalized cross-correlation module calculates a modified normalized cross-correlation between a reference image associated with the first retroreflective feature and the captured image using a masking image generated from the captured image. A display outputs indicia of one or more matches between the reference image and the captured image.