图像采集综合评估的嵌入式指纹识别系统  

Embedded fingerprint capture system for image acquisition comprehensive evaluation prompt

作　　者：郭恺[1] 陈祖爵[1] 刘小强 

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013 [2]江苏超创信息软件发展股份有限公司,江苏镇江212013

出　　处：《电子设计工程》2014年第1期179-183,共5页Electronic Design Engineering

基　　金：镇江市科技支撑计划(工业部分)项目(GY2010023)

摘　　要：为提高指纹采集与指纹图像数据处理的效率,设计一种新型的指纹识别系统,采用了专用指纹芯片、指纹传感器芯片和LCD显示模块。设计了一种指纹图像综合评估算法,采用综合基于方向图的灰度值计算、计算灰度值的前背景分割、计算优势方向块的图像质量分析、计算灰度均值和标准差的指纹图像干湿程度分析、指纹位置的分析等技术和方法,对指纹图像进行处理,并将指纹图像的评估结果输出到显示屏上。系统已应用于医疗机构的EMR系统中。In order to improve the efficiency of fingerprint collection and fingerprint image data processing, a new type of fingerprint recognition system with fingerprint special chip, fingerprint sensor chip and LCD display module. System uses an integrative fingerprint image estimation algorithm, which integrates methods and technologies such as calculation of gray value based on direction figure, calculation of gray value to segment foreground points and background points, calculation of blocks with predominant direction to analyze image＇ s quality, calculation of average gray value and standard deviation to calculate images＇ wet degree and dry degree, analysis of the position of fingerprint, to preliminary process fingerprint images, and outputs results on the display screen. This system has been used in EMR systems of medical institutions.

关 键 词：指纹 评估 专用芯片 电子病历 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]