基于ARM的人脸识别门禁系统设计

摘要

针对现有门禁系统因采用IC卡、射频卡等考勤方法存在“认卡不认人”,采用指纹虹膜等生物识别技术存在指纹容易损伤等问题,设计了一套基于ARM的人脸识别门禁系统.该系统采用S3C2440B芯片为处理器、USB摄像头作为视频采集设备,自动搜索人脸进行拍照;采用基于PCA的人脸识别算法对采集的人脸图像进行识别,若为非法入侵人员则发出报警声,并通过GPRS技术发短信通告系统管理员采取安全防范措施.测试结果表明,该系统在严格的测试环境下能够准确高效地识别出人脸,平均识别率达95％以上.%In view of problems that existing access control system with IC card or RF card can only recognize card but cannot recognize people,and the system with finger prints iris recognition technology that fingerprint is easy to be damaged,the paper designed a face recognition access control system based on ARM.The system takes S3C2440B as processor,USB camera as device of capturing video,which can search face and take photo automatically.The system adopts face recognition algorithm based on PCA to recognize the image.If the face is not in library,the system will alarm and send message to notice administrator by GPRS.The test result proves the system can recognize face accurately and efficiently under the strict test environment,and the average recognition rate is above 95 ％.