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
a
imageswereextractedautomaticallyfromlivevideoscapturedbyrealtimeusing
all
CreativeWebCam,andfaceswererecognizedin
improvedHMMfacerecognitionalgorithm.AfastfacedetectionalgorithmusingboostedHaar-like
re-
featureswasappliedinitiallytodetectfacesregionsfromthevideostream.Thedetectedfaceregionwasfurtherfinedby
a
skincolormaskingmoduletoachievemoreaccuratefaceposition.ToimprovetheaccuracyofHMMbased
facerecognitionalgorithm,discretewavelettransform,insteadofdiscretecosinetransform,wasusedtoextractob—servationsequencesforHMM。Experimentswereconductedusingtwofacedatabases:theORLdatabaseandtheNottinghamcolorfaceimagedatabase.Theresults
accuracy
on
bothdatabasesshowthattheproposedmethod
a
can
improvethe
bymorethansixpercents.Furtherimprovementhasbeenobservedwhenskinmaskingmoduleisusedto
refinethedetectedfaceKeywords:face
region.
detection;colorimageprocessing;biometrics;hiddenMarkovmodel
recognition;face
CLCNumber:TP391:TP751
Automated
Documentcode:A
a
facerecognitionsystemshave
as
widerangeofim—thesystem.Itsaccuracyismask
as
a
improved
using
to
a
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
万方数据