基于MBF200的嵌入式系统指纹预处理算法研究

Research for Fingerprint Pretreatment Algorithm of Embedded System Based on MBF200

随着指纹识别技术的不断发展以及嵌入式系统应用的日益广泛,人们对于如何将指纹识别技术用于嵌入式系统的研究也越来越多。文中针对MBF200采集到的指纹图像的特点,讨论了一种用于嵌入式系统的指纹图像预处理算法。介绍了嵌入式指纹识别系统的硬件平台,再依据由该系统采集到的指纹图像的特点,提出通过纹线跟踪来增强指纹图像,并对现有的细化后纹线跟踪去伪特征算法作了改进,调整了去伪顺序。实验表明,该算法具有快速处理的良好效果,满足嵌入式系统的要求。

With the development of the fingerprint identification technology and the ubiquity of the embedded system application, the research for how to use the fingerprint identification technology in the embedded system becomes more and more. Aiming at the feature of fingerprint image acquired by MBF200,an algorithm of fingerprint image pretreatment used in embedded system is discussed in this paper. Introduce the hardware platform of the embedded fingerprint identification system, and present a method that enhances fingerprint image with track following according to the feature of fingerprint image acquired by this system,also make improvement to the current algorithm of removing spurious minutiae after thinning,viz, adjust the sequence of removing spurious minutiae. As is shown from the experiment, this algorithm has a good effect on fast treatment,and satisfies the request of embedded system.