基于皮肤模板和改进HMM的自动人脸识别系统

时间:2022-11-24 17:09:24 作者:壹号 字数:10342字

基于皮肤模板和改进HMM的自动人脸识别系统

第25卷第1期2008年1月

深圳大学学报理工版

JOURNALOFSHENZHENUNIVERSITYSCIENCEANDENGINEERING

VnL25No.1

Jan.2008

文章编号:1000-2618(2008)01.0071.05

【电子光学与信息工程】

Automaticfacerecognitionbased

andimproved

SHENLin—iinand

on

skinmasking

HMM

Zhong

MING

CollegeofSoftwareShenzhenUniversityShenzhen518060P.R.China

Abstract:AnewhiddenMarker

module(HMM)basedfacerecognitionsystemispresentedinthispaper.Face

imageswereextractedautomaticallyfromlivevideoscapturedbyrealtimeusing

all

CreativeWebCam,andfaceswererecognizedin

improvedHMMfacerecognitionalgorithm.AfastfacedetectionalgorithmusingboostedHaar-like

re-

featureswasappliedinitiallytodetectfacesregionsfromthevideostream.Thedetectedfaceregionwasfurtherfinedby

skincolormaskingmoduletoachievemoreaccuratefaceposition.ToimprovetheaccuracyofHMMbased

facerecognitionalgorithm,discretewavelettransform,insteadofdiscretecosinetransform,wasusedtoextractob—servationsequencesforHMM。Experimentswereconductedusingtwofacedatabases:theORLdatabaseandtheNottinghamcolorfaceimagedatabase.Theresults

accuracy

on

bothdatabasesshowthattheproposedmethod

can

improvethe

bymorethansixpercents.Furtherimprovementhasbeenobservedwhenskinmaskingmoduleisusedto

refinethedetectedfaceKeywords:face

region.

detection;colorimageprocessing;biometrics;hiddenMarkovmodel

recognition;face

CLCNumber:TP391:TP751

Automated

Documentcode:A

facerecognitionsystemshave

as

widerangeofim—thesystem.Itsaccuracyismask

as

improved

using

to

fastskincolorbased

portantapplicationssuchvideosurveillance,crimeprevention

postprocessingprocedure

to

locatethefaceareaaccu-

…… 此处隐藏1645字 ……

quirelargecomputational

tions,the

byNefianandHayes【lo]forfacerecognition.This

收稿日期:2007-09—13;修回日期:2007一11—07

基金项目:国家自然科学基金资助项目(60673122);深圳大学科研启动基金资助项目(200746)

作者简介:沈琳琳(1976一),男(汉族),浙江省武义县人。深圳大学副教授、博士.E—mail:llshen@%Ledu

on

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