The Arithmetic Study And Design Of Automated Fingerprint Identification System

Accurate, secure and practical personal identification methods arehighly required with the development of the social and economy. The traditional personal identification methods based on token or password have the hidden troubles. The token or password is prone to being lost, forgotten, copied and stolen. The traditional personal identification methods cannot satisfy the security requirement of our highly interconnected information society. Biometrics based on the physiological or behavior traits identification provides a convenient and reliable scheme. Among the numerous biometrics, more attentions have been paid to the fingerprint identification technology due to its convenience, high accuracy and low cost. The technique of fingerprint identification has become one of the widest used biometric identification techniques. It has been widely. used in electronic commerce, criminal identification, information safety etc.In recent years, automatic fingerprint identification technique has been a research focus in the area of science. Many researchers have done much work on fingerprint identification. But some technical difficulties always baffle the development of fingerprint identification.The main points and innovation are as follows:(1)The basic concept of the biometric identification system and the familiar biometric identification techniques are summarized. The structure, principle and the research status of AFIS are introduced. The key problems in AFIS are analyzed.(2)The technology of fingerprint image acquisition is studied. The relevance definition and function index of fingerprint image acquisition is introduced. And comparing the technology of fingerprint image acquisition.(3)The preprocessing of fingerprint images is studied, which includes the synthesis evaluation of image, fingerprint enhancement, binarization and thinning. Based on the study of existed image evaluation methods, a practical synthesis evaluation method.of fingerprint image is proposed.(4)Minutiae extraction and fingerprint identification algorithms based on the minutiae matching algorithms of fingerprints are researched. The existed minutiae extraction and matching algorithms are reviewed. And based on the study of existed methods a new identification algorithms is proposed.(5)Based on the algorithms of this paper, we design a Automatic Fingerprint Identification System.