| In recent years,information security is more important than ever before for human beings.In life,the general security technology can't be very good to meet the needs of identification,there is the possibility of easy loss,easy to be stolen.People need a kind of identity authentication technology which is convenient,safe and reliable,and it can provide the possibility of the identity authentication technology based on the biological characteristics of the human body.Biometric identification technology is the technology of identity authentication by the biological characteristics or behavior characteristics of human beings.The identification technology of the identity of the hand is a part of the biometric identification technology.People tend to do a lot of things by hand,which is very convenient and easy to be accepted by people.Now,Hand identification technology is mainly based on palmprint recognition,fingerprint recognition,hand recognition,hand vein recognition,etc.The finger vein recognition technology is based on the characteristics of the hand,which is based on the recognition of the living body.It is difficult to be copied and stolen.Finger vein recognition device is small and easy to carry,the application is also more and more widely.This paper describes the following aspects:This paper presents a brief introduction to the template matching algorithm based on vein structure and finger vein recognition method based on detail point distance.The implementation process of finger vein recognition algorithm based on phase correlation algorithm and gradient dependent finger vein recognition algorithm is described,and the recognition results of the two algorithms are analyzed.An improved gradient algorithm is proposed to reduce the storage space and improve the processing speed.At the end of this paper,the effect of pulse on the recognition accuracy is discussed,and the method of improving the recognition accuracy by video capture rather than single image acquisition is proposed. |
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