基于DSP指纹识别系统设计 中英文摘要

基于DSP指纹识别系统设计
摘要
指纹识别系统是目前性价比最高的生物识别系统之一,将指纹识别技术和嵌入式系统相结合可以使指纹识别技术的应用摆脱空间与环境的限制,更加广泛的适用于各种场合。

随着现代经济和社会的不断发展,越来越多的场合需要身份的确认,我国将成为指纹识别产品的消费大国,因此,开发识别速度快、性价比高的嵌入式指纹自动识别系统具有重要意义。

本文的内容正是关于自动指纹识别系统的研究与设计。

按照设计流程，系统主要包括以下三大部分：指纹图像采集部分、指纹图像处理部分（包括预处理、特征提取及特征匹配）、指纹数据传输部分。

在设计工作中，根据系统的实现要求及目前最新的技术发展情况，并综合考虑成本与性能等因素，确定了以TI公司的数字信号处理器TMS320F2812。

本文首先描述了系统设计的整体思路，然后分章节讲解了各个模块设计中的技术细节，最后列举了一些在系统调试过程中遇到的问题和相应的解决方法，并为系统进一步优化提出了建议。

实验证明本系统设计比较合理、方案可行性高、有较强的实用价值与广阔的前景，并对采用DSP为核心来构建嵌入式处理系统的方案提供了一些有价值的参考。

关键词：指纹识别系统；图像处理；DSP
The Design of Fingerprint Identification system base on DSP
Abstract
Fingerprint identification system is one of the most cost-effective biometric systems in the world, fingerprint identification technology and embedded system can be combined, in this way, the application of fingerprint identification technology can be more widely applicable to various situations without considering space and environmental constraints. As the continuous development of economy and society, identity authentication is needed in more and more occasions,there will be more consumption in fingerprint identification products in our country, therefore, it is significance to develop a cost-effective embedded fingerprint identification system with high identification speed.
This paper is about the study and design of AFIS. According to the process of design the system can be divided into three components:(1)the collection of fingerprint;(2)the processing of fingerprint image including pre-processing, feature extraction and matching of fingerprints;(3)the transmission of data. To meet the needs of modern technique and system realization, the structure of the system is designed properly and the devices in the system are selected carefully. More over, both the cost and the quality are also considered. The main hardware of the system consists of DSP (Data Signal Processor) TMS320F2812.
Integral notion of system design is brought out at the beginning of the paper. Afterwards, detail technical information of module design is narrated in each chapter. At last, some problems encountered in system debugging and method how to solve them are brought out, and some suggestions for system optimization are also provided. The studies prove this embedded system is reasonable, and has the advantages of easy operation, high speed and low cost. This paper provides some valuable references for the design of processing system based on DSP.
Key Words: Fingerprint Identification System ; Image Processing; DSP。