FINGERPRINT RIDGE IMAGE SYNTHESIS SYSTEM, FINGERPRINT RIDGE IMAGE SYNTHESIS METHOD, AND PROGRAM THEREOF

摘要

A fingerprint ridge image synthesis system, configured to accurately extract the shape of the ridges contained in a fingerprint image and clearly reproduce the fingerprint of the fingerprint image on an image, includes: a ridge pixel parameter calculation unit that calculates parameter values including wavelet phase, ridge angle, and inter-ridge distance corresponding to each pixel by means of applying continuous wavelet conversion with respect to the gradient of each pixel contained in the fingerprint image; a label optimization processing unit that optimizes/converts the parameter values corresponding to each pixel to values indicating the mutual continuity with the parameter values in surrounding pixels; and a ridge image generation unit that generates the ridge image by means of converting each pixel gradient in the fingerprint image on the basis of the optimal value.