摘要在今天的社会市场经济中,信用关系是一个基本的经济关系,也是市场经济的基本准则,健全社会信用体系是一个成熟的市场经济健康运行的重要保障。个人信用已经成为其他类型的信贷的基础,同时也是社会信用体系的核心。完整的个人信用制度是市场经济的稳定运行的重要组成部分,在国家的社会信用体系中发挥着基础性作用。随着中国市场经济的发展,征信系统建设逐渐受到人们关注。这就需要建立一个安全可靠的信征系统,对每个用户进行准确的身份识别。然而现行的征信系统的个人身份验证存在着错判、漏判和其他人为因素等问题,严重影响了征信系统的安全性。每个人的脸型特征具有唯一性,且终身不变,这一特点使脸型成为可靠的一种生物识别特征,因此人脸识别技术可有效对个人身份的真实性进行验证。本文主要研究了基于人脸识别技术的征信中心身份验证系统的设计,并且对系统进行了仿真。通过仿真可以证明本系统能很好的对个人身份进行验证,而且非常的安全可靠。关键词:人脸识别;sift算法;身份验证;信征体系ABSTRACTIntoday'ssocialmarketeconomy,creditrelationsisabasiceconomicrelations,butalsoabasiccriterionofthemarketeconomy,andimprovethesocialcreditsystemisanimportantguaranteeforamaturemarketeconomyhealthyoperation.Personalcreditisthestartingpointforothertypesofcredit,atthecoreofthesocialcreditsystem.Completepersonalcreditsystemisamaturecountry'ssocialcreditsystemimportantcomponentforthestableoperationofthemarketeconomyplaysafundamentalrole.WiththedevelopmentofChina'smarketeconomy.Howtobuildasafeandreliableinformationcollectsystemtoidentifyaccuracyforeachuser.Someproblemssuchaswrongjudgment,omittedjudgmentandpersonalissuesexitinPersonalidentityverificationmethodofthecurrentcreditsystem.ThesecurityofPersonalidentityauthenticationhasbeeninfluencedseriously.Eachperson'sfaceisuniqueandlifelong,andthischaracteristicmakesitbecameoneofthemostreliablebiometricfeatures.Therefore,facerecognitiontechnologycaneffectivelytheauthenticityofpersonalidentityverification.ThispapermainlystudiesthedesignandSimulationoffacerecognitiontechnologybasedonpersonalcreditreportingsystem.Thesimulationprovesthatthissystemcanbeverygoodtoverifypersonalidentity,butalsoverysafeandreliable.Keywords:facerecognition;SIFTalgorithm;identityauthentication;personalcreditreportingsystem目录第一章绪论.............................................................11.1课题背景及意义........................................................................................21.1.1个人征信系统的意义...................................................................21.1.2人脸识别技术及意义...................................................................41.3研究现状..................................................................................................51.4章节安排....................................................................................................5第二章SIFT基本原理及应用......................................................................................72.1特征匹配....................................................................................................72.2SIFT特征匹配算法..................................................................................82.2.1建立尺度空间高斯金字塔...........................................................92.2.2空间极值点的检测......................................................................132.2.3边缘效应的消除方法..................................................................142.2.4关键点方向的定位...................