基于指纹识别身份验证的数据采集系统设计与实现

【作者】 孙瀚；

【导师】 黄大贵；

【作者基本信息】 电子科技大学 ， 精密仪器与机械， 2005， 硕士

【摘要】 人类社会活动中常常出现需要验证个人身份的情况,信息时代的今天,对个人身份的数字化和隐性化提出越来越高的要求,身份验证成为人们日常生活的一个重要组成部分。传统的密码、有效证明文件、ID 卡等等,给使用者带来越来越多的不方便。指纹以其多方面的优点,成为身份识别领域研究的新宠。数据采集模块,论文在充分利用单片机内部资源的基础上,开发出人机对话实用简洁、易于操作的数据输入终端环境,并为以后的人工输入升级到设备采集预留了开发接口。指纹识别功能模块部分,有效利用设备所配套的开发包,开发出控制界面和运行程序,对指纹图像采集头进行控制,采集指纹图像并进行指纹比对,实现身份识别。项目前期工作是对数据管理系统进行整体框架设计和各模块功能分析、硬件选型。后期的工作则集中在数据采集功能模块和指纹识别功能模块的实现。论文第二章介绍了指纹识别技术,分析了指纹识别的发展历程,现状,应用前景;详细描述了指纹识别技术的基本原理和指纹识别领域优秀的细化和比对算法。论文第三章给出了计算机辅助管理系统设计的总体框架、功能和性能要求;详细描述了指纹识别模块和数据采集模块在管理系统中的功能。论文第四章给出数据采集模块的硬件组成,着重介绍了数据采集模块的软、硬件设计。论文的第五章介绍了指纹图像采集设备及指纹识别开发包,描述了指纹识别功能模块的具体实现。在当前指纹识别技术相对成形的背景下,本课题在应用开发层面上把基于指纹的身份识别技术嵌入到车间计算机辅助管理系统中,开发指纹识别功能模块,与数据采集模块捆绑,实现了对数据输入操作人员的身份的认证。使指纹的应用更普通化。更多还原

【Abstract】 Biometric recognition technique, which is represented by fingerprint recognition technique, will be used more and more widely in many fields. At the same time, fingerprint recognition technique will play a dominant role in identity recognition. Eventually it will become an indispensable part of our daily life. Therefore, studies on the theory and application of fingerprint recognition have significant meaning in both theory and application. Fingerprint recognition has become a research focus in the field of identity verification recently. Because of its unique characteristics and advantages in many aspects , considering the state that fingerprint recognition technique has developed to a relatively stable extent at present, the biometric recognition technique based on fingerprint is applied to the computer aided management system for workshops, and a fingerprint recognition module is developed in this dissertation. By integrating with the data acquisition module developed at the earlier stage, the two modules form the data acquisition sub-system, which enhances the reliability of data input. At the early stage, we design the whole system framework,select suitable hardware for each function module. Then, the data acquisition module and fingerprint recognition module are developed in detail. The data acquisition module, with friendly man-machine interface and easy to operate, is developed by making full use of the resources within the single-chip. The fingerprint recognition module with good control interface is realized by taking good use of the software development kit. The module can drive the fingerprint reader to get fingerprint images,realize fingerprint matching. In chapter two of this dissertation, the fingerprint recognition technique is introduced, the development of fingerprint recognition, current situation, and the future is described; the basic principle of the fingerprint recognition technique is analyzed in detail; the outstanding thinning algorithm and matching algorithm in the field of fingerprint recognition and narrated. In chapter three, the design plan and the whole framework of the computer aided更多还原