Method of analyzing a fingerprint

An analysis method for analyzing a fingerprint, comprising the step of using at least one sensor to acquire a fingerprint image representative of the fingerprint, together with the following steps performed by at least one electrical processor unit;

• performing filtering processing on the fingerprint image to estimate, for each pixel of the fingerprint image, a first frequency of the ridges in the fingerprint, and using the first frequencies associated with the pixels of the fingerprint image to produce a first frequency map of the fingerprint image;
• subdividing the fingerprint image into a plurality of windows each comprising a plurality of pixels, calculating a Fourier transform for each window in order to estimate a second frequency of the ridges for all of the pixels in said window, and using the second frequencies associated with the pixels of the windows to produce a second frequency map of the fingerprint image;
• and
• merging the first frequency map and the second frequency map in order to obtain a map of consolidated frequencies of the fingerprint image.