一个自动指纹识别算法的研究与实现

A Set of Algorithms for Capturing of Fingerprint and Preprocessing of Images

针对指纹识别中的指纹采集和预处理这两个关键问题,设计并实现了USB电容式指纹采集仪,保证了指纹图像采集的高质量。并在此基础上提出了一套完整的指纹预处理算法,包括平滑、滤波、二值化和细化,有效的利用了指纹的方向特性,很好的增强了指纹图像,保护了细节特征,为可靠、准确的实现指纹识别提供了一种可行的方法。

Based on capacitive fingerprint sensor and USB bus interface, the capturing apparatus of fingerprint is designed and high quality of images is assured. A set of algorithms for preprocessing of fingerprint images is proposed, which is composed of smoothing, filtering, binarization and thinning. The algorithm can utilize the directional characteristic of fingerprint, enhance the fingerprint images, protect minutiae feature of fingerprint.