1L HONG,Y WAN,A K JAIN.Fingerprint image enhancement:algorithms and performance evaluation[J].IEEE Trans.Pattern Analysis Machine Intelligent,1998,20 (8):77-789.
2B.M.Mehtre,N.N.Murthy,S.Kapoor,and B.Chatterjee,Segmentation of[J].Fingerprint images using the directional image Pattern Recognition,1987,20(4):429-432.
