摘要
为了提取更精确的指纹图像,在分析指纹提取技术的基础上研究和设计了一种基于新型光纤锥与电荷耦合器件(charge coupled device,CCD)耦合技术的光电式指纹采集方法与系统。该系统根据手指透光特性和光纤锥的传光原理给出了光源布局及光强分析,分析了该系统的硬件组成原理,给出了实验结果,并分别与非接触式和接触式光电指纹采集方法进行了对比。该指纹采集系统具有体积小、快速采集、分辨率高、可靠性强等优点。
To extract the Fingerprint image more exactly, a new optoelectronic fingerprint collected method and system based on the optical fiber taper which coupled with charge coupled device （CCD） is researched and designed on the basis of the analysis of the fingerprint gathering technology. According to the light-admitting quality of a finger and the light transmission of fiber-optic, a light-supply apparatus and the analysis of luminous intensity are designed, the principle of hardware devices are analysed and the experimental result is given, meanwhile the images of the non-contact and contact type of optoelectronic fingerprint collect method are compared respectively. It has the advantages of small volume, high gathering speed, high-resolution and high credibility.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第8期1870-1873,共4页
Computer Engineering and Design
基金
2008年江苏省青蓝工程基金项目
关键词
指纹采集
光电式
光纤锥
电荷耦合器件
激光
fingerprint collection
optoelectronic
optic fiber taper
charge coupled device
laser
