Based On Non-contact Card Fingerprint Identification And Authentication System And Implementation

With the development of society,based on the traditional keepsake or password security authentication system becomes more and more fragile,unable to adapt to the needs of modern security authentication system.This requires people to study more secure,reliable,security features for better security authentication methods.Fingerprint recognition technology is generated in this context,fingerprint recognition technology is a safe,reliable,high feasibility of biometric technology,which means the body's physiological characteristics to improve the reliability of identification.Because the fingerprint image are susceptible to noise,distortion and other factors,the recognition rate and speed can not fully meet the requirements of many practical applications,the study and improvement of fingerprint recognition algorithm still has important theoretical and practical significance.This paper focuses on the fingerprint image preprocessing,feature extraction,feature matching pseudo-feature culling and fingerprint recognition technology is a key part of the four,mainly on the four key part of a study,and one of the pseudo?algorithm is improved features removed.In this paper are as follows:1.Introduced the design of the main steps of preprocessing,including image segmentation,enhancement,binarization and thinning;2.In the study of the existing fingerprint feature extraction algorithm based on the extraction of this article,including the center,triangular points,end points and bifurcation points,etc.feature points;3.Remove the existing pseudo-feature in-depth study and analysis of algorithms,based on the endpoint for the pseudo-right,bridging bifurcation point and difficult to deal with these pseudo-hole features were removed propose new improved method of pseudo-feature,and through experiments to verify its performance;4.Based on FBI's fingerprint minutiae matching algorithm for fingerprint model the feature match.By introducing a variable sized bounding box,allows the algorithm to deal more effectively matched two non-linear deformation between fingerprint images.The system has been designed for multiple scenic Zhangjiajie City,Hunan Province fingerprint IC card gates.After testing,the system reliable performance.With visual fingerprint registration auxiliary screen,visitors can reflect real fingerprint dry,wet,clarity,error rate is less than two thousandths.