Method and device for reconstructing a panoramic image of a fingerprint

Abstract

A method, implemented by a data processing device, for reconstructing a panoramic image of a fingerprint from at least two images of a finger which are acquired at different viewing angles, the method including determining common minutiae between the two images, determining a global geometric transformation so as to link the common minutiae between the images by minimizing a residual error between the positions of said common minutiae between the images, selecting the common minutiae for which the residual error is less than a given threshold value, determining, from the global geometric transformation, a modified global geometric transformation so as to link only the selected common minutiae; Determining, for each image, a demarcation line passing through the areas of the image exhibiting the highest density of selected common minutiae, and joining the images along the demarcation line by applying the modified global geometric transformation to form a panoramic image.

Dependencies are inferred from the claim text.