METHOD AND DEVICE FOR IDENTIFYING FINGERPRINTS USING AN ANALOG FLASH MEMORY

A method for identifying fingerprints includes the steps of acquiring a primary image and a secondary image; determining notable points in the primary image; comparing with one another the primary image and the secondary image in order to identify the correspondences between the primary image and the secondary image; and validating the possible correspondences. The comparison between the primary image and the secondary image is based on comparison of the regions which surround the notable points on the primary image, with all the points of the secondary image, through a flash cell array, such as to obtain lists of points in the secondary image which are probably associated with the notable points. The possible association is then verified, with acceptance of limited local deformations of the images on the basis of an associated graph, consisting of successive series of triangles, and the secondary image is considered to be identified when it has completed a final validation stage which is based on comparison of corresponding segments on the primary image and the secondary image.