摘要
研究采用嵌入式处理器实现指纹识别系统的软硬件设计方法,通过构造以微处理器AT91SAM7X256和MBF200指纹传感器模块为平台的硬件环境,实现了嵌入式指纹识别硬件系统的设计。微处理器选用内含丰富外设的AT91SAM7X256,降低了硬件成本。指纹识别系统选用μC/OS-Ⅱ作为嵌入式操作系统,指纹识别算法中主要介绍了基于图像匹配的指纹识别算法、基于Gabor函数的指纹图像增强算法和基于方向图滤波指纹特征提取算法等,实现了低成本,高可靠性多节点指纹识别系统的设计。
In this paper,the hardware and software design method of embedded fingerprint identification system is researched. By constructing a microprocessor AT91SAM7X256 and a MBF200 fingerprint sensor module as a platform for hardware environment,it achieved the design of embedded fingerprint identification hardware system. The AT91SAM7X256 includes rich peripherals. It lowers the cost of hardware. The fingerprint identification system used μC/OS- Ⅱ as an embedded operating system. In the fingerprint identification algorithm,the emphasis is laid on image-based fingerprint identification algorithm, Gabor function based fingerprint image enhanced algorithm, directional filter based fingerprint image preprocess and fingerprint minutiae matching algorithm. This fingerprint identification system design is cheap and available in practical.
出处
《电子设计工程》
2010年第4期119-121,127,共4页
Electronic Design Engineering
基金
广东省电力调度中心项目管理优化与信息系统(JA5909004)
