网络在线指纹考勤系统可用性措施  

Measures for improving availability of networked on-line fingerprint attendance system

作　　者：曾祥绪[1] 

机构地区：[1]上海电机学院电子信息学院,上海200240

出　　处：《计算机应用》2010年第10期2831-2833,共3页journal of Computer Applications

摘　　要：针对网络在线指纹考勤系统在使用中出现的指纹识别延时过长、需要比对的样本库过大、容易误判及对采集到的指纹质量要求过高等问题,分析并提出三项可用性措施:将指纹识别和银企联名信用卡相结合,使身份认证中指纹的1:N远程比对转化为1:1本地比对;采用冗余的指纹模板并自动动态更新;对指纹图像质量评估提出了三项指标及计算方法并将其应用于指纹识别算法中。实际应用效果表明,所提措施及算法能够明显提高在线指纹考勤系统可用性,达到大范围商业应用要求。Concerning the problems that the networked online fingerprint attendance system would have long time delay, involve large number of samples to match, be prone to mismatch and require high quality of fingerprint in application, three approaches was proposed to improve availability of the system. Firstly, by combining fingerprint verification with salary-based credit card, the needed 1： N remote fingerprint verification was replaced by local 1：1 fingerprint verification, Then, redundant and rolling updated fingerprint templates were used, and then the fingerprint image quality estimation information was applied into fingerprint matching. The actual application shows that the proposed approaches are effective and can improve availability of the on-line fingerprint attendance system greatly. The system can be used in large-scale business.

关 键 词：指纹识别 可用性 指纹考勤系统 在线识别 指纹图像质量 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构] TP393.09[自动化与计算机技术—计算机科学与技术]