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Local Ridges' Characteristics Based Direct Gray-Scale Minutiae Detection in Fingerprints

Minutiae detection is a key step in fingerprint matching.It's a new approach in minutiae detection to trace the ridge flow in direct gray-scale image,which can bypass the preprocessing in traditional minutiae detection technique.But this method is apt to drop minutiae,get false minutiae or misidentify the minutiae type,in which misidentification of the minutiae type is a main problem.In this paper a new direct Gray-Scale Minutiae Detection method basing on Local Ridges' characteristics is introduced,which can restrain the error mentioned above.In particular the method can effectively solve the problem in misidentification of minutiae type.