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

Abstract: 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.

Key words: fingerprint identification, availability, fingerprint attendance system, on-line identification, fingerprint image quality