Fingerprint identification method and apparatus based on field programmable gate array chip

Abstract

The invention discloses a fingerprint identifying method and a device based on on-site programmable gate array chips. The invention is realized by hardware description language, sequentially carries out image distribution, fingerprint image enhancement and minutiae extracting operation to fingerprint image data read by the interface of a fingerprint sensor, and stores a fingerprint template including the fingerprint minutiae in an external memory chip by an interface of the external memory. In the process of minutiae matching, a minutiae template produced by input fingerprint is matched with the stored minutiae template to verify whether the minutiae templates belong to the same finger. The on-site programmable gate array chip is respectively connected with the fingerprint sensor, a fingerprint template storage circuit, a serial communication circuit and a power management circuit. The invention increases the fingerprint identification speed under embedded systems environment, reduces the temporary data storage space required in the fingerprint identifying process, and decreases the hardware cost of fingerprint identifying system, thereby higher fingerprint identifying property can be realized with lower cost of embedded system.

Description

technical field [0001] The invention relates to a fingerprint identification method, in particular to an FPGA-based fingerprint identification method and device. Background technique [0002] Biometric identification technology is an emerging technology gradually formed with the continuous development of computer science and technology, especially the development of computer image processing and pattern recognition. In recent years, biometric identification technology, especially fingerprint identification technology has become more and more mature, and the core technology has fully reached the practical level. Compared with other biometric identification methods, such as palmprint recognition, iris feature recognition and other biometric identification methods, fingerprint recognition is more important in terms of uniqueness of features, persistence of features, reliability of feature recognition, and user acceptability. has considerable advantages. As countries around th...

AI Technical Summary

Problems solved by technology

The implementation of this fingerprint identification method that relies on software programming completely depends on the performance of general-purpose processors, and lower-performance general-purpose processors will affect the performance of fingerprint identification products.

The implementation of this fingerprint identification method greatly limits the performance of fingerprint identification products using low-cost embedded processors, which in turn affects the application range of fingerprint identification products.

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