The Research Of Algorithm For Fingerprint Recognition Based On DSP

Traditional security system mainly uses token or password for secrecy, but this system has become frailer with the development of society. To cope with this challenge, mankind has turned to biometrics technique and hoped enhancing identity verification definition by using people's physical character and behavior.The so-called fingerprint is the pattern of ridges and valleys on the surface of a fingertip. Modern statistics has proved that fingerprint is unique and steady. With the development of micro-computer technique and embedded developing system technique, automated fingerprint identification system (AFIS) has made a great progress in the recent period. This article mainly stresses on one of the key techniques of AFIS, the fingerprint image processing technique.The author analyzed the characteristics of fingerprint image based on a number of internal and overseas academic articles and documents on fingerprint images processing technique which were published in these recent years, then developed a set of fingerprint image processing arithmetic that adapts to the fingerprint image gathered by optical device. The arithmetic includes several steps: filtering waves, thinning, refining the minutiae, fingerprint matching on dot mode, etc.It has transformed the arithmetic to DSP platform at the end of this article. The progress of optimizing the arithmetic and deploying the resources of the DSK reasonably by combination with the features and performance of DSP processor benefits for realization of DSP.