Study Of The Recognition System Based On The Hand Vein

The hand vein recognition is a new biological feature recognition,which is developed only several years. We can carry on the body's identification through the hand vein.Compared with fingerprint recognition,vein recognition has many advantages , such as safety,non-contact.Based on the latest extensive discourses and technology journals in this field, the dissertation is trying to make studies on vein recognition system.Main works are as follows.(1) Vein pre-processing. Its purpose is to remove noise of vein image and improving definition of vein image ,get the structure of vein,change vein image to a single pels width image ,Which wil be beneficial to the following feature extraction.Pre-processing includes image normalizing, binarization, de-noising, thinning.(2) Vein feature extraction. Its purpose is to get all endings and bifurcations. The both kinds of feature can be extracted by using 8-neighborhood cross-calculation algorithm. Then delete all the false minutiae.(3) Vein image matching.Its purpose is to judge whether the two veins are captured from one person based on their minutiae.At last, every module of the system is simulated by Matlab and Visual C++,the results proved to be good.