基于DSP和ZigBee的虹膜识别系统设计

摘要

Due to complex computation and poor real-time performance of the traditional iris recognition system,iris feature is extracted by using amplitude and phase information of the mean image blocks based on Gabor filtering on image,and the k-nearest neighbor algorithm is combined to complete iris recognition function.The recognition reduces the recognition time and improves the recognition accuracy.At the same time,identification result is transmitted to the cloud server through ZigBee network to solve diffcult wiring problem.The experiment shows the system runs stably and has fast recognition speed.It has been applied to a security system.%针对传统虹膜识别系统计算复杂、实时性差等问题,在 Gabor滤波图像的基础上,利用分块图像的幅值均值和相位信息来提取虹膜特征量,并结合k-近邻算法来完成虹膜识别功能,缩短识别时间,提高识别准确度.同时,将识别结果通过ZigBee网络发送至云端服务器,解决了厂区内布线困难问题.实验表明,该识别系统运行稳定,识别速度快.该识别系统已被应用于某安防系统.