摘要
指纹识别技术是生物特征识别技术中的研究热点。指纹学的研究表明指纹具有唯一性和终生不变性,利用指纹识别技术进行身份验证是可行而且实用的。文中系统地介绍了指纹识别流程及近几年相关技术的最新进展,在此基础上针对脱皮指纹直方图存在多峰的特点,提出了一种基于灰度区间映射的指纹预处理方法。仿真实验结果表明,当去掉灰度区间映射处理后,脱皮指纹识别出错,而包含灰度区间映射处理后识别率达到82.34%。
Fingerprint recognition technique is the research focus of the biometric recognition technology. It is shown that fingerprint is unique and life-long invariance, feasible and practical for authentication. The procedure of fingerprint identification is investigatedt in detail and the latest development of related techniques is surveyed. Regarding the multi-peak characteristic of the histogram of the peeling fingerprint, a preprocessing method based on gray interval mapping is proposed. Simulation results show that the identification error of peeling fingerprint happened when removing the gray interval mapping. An overall recognition rate of 82.34% is achieved by adopting the gray interval mapping.
出处
《计算机技术与发展》
2012年第10期147-150,156,共5页
Computer Technology and Development
基金
国家自然科学基金资助项目(60972162
61102155)
关键词
指纹识别
脱皮指纹
灰度区间映射
fingerprint recognition
peeling fingerprint
gray interval mapping
