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:2010-01-07;:2010-02-26:(60573125;60873264);2007(075115002):(1977-),,,,,CCF,:;(1977-),,,,,:;(1948-),,,,,:;(1955-),,,,,::1001-9081(2010)06-1594-03李全彬1,2,王小明1,刘锦高1,李明1(1.,200062;2.,221116)(liqbzy@163.com):复杂光照对人脸肤色检测具有重要影响在YCbCr颜色空间建立复杂光照条件下的人脸肤色模型,然后利用该模型检测人脸图像的肤色区域,并对检测结果利用4-连通区域的几何特征消除非人脸区域,最后利用连通元复原误检的人脸肤色区域实验结果表明,该方法可以实现复杂光照下人脸肤色区域的准确检测:YCbCr;肤色模型;人脸肤色检测;光照多变;4-连通元:TP391:AFaceskincolordetectionincomplicatedilluminationconditionsLIQuan-bin1,2,WANGXiao-ming1,LIUJin-gao1,LIMing1(1.SchoolofInformationScienceandTechnology,EastChinaNormalUniversity,Shanghai200062,China;2.CollegeofPhysicsandElectronicEngineering,XuzhouNormalUniversity,XuzhouJiangsu221116,China)Abstract:Faceskincolordetectionissensitivetoilluminationvariations.Thispaperpresentedanovelmethodtodetectthefaceskincolorregionsincomplicatedilluminationconditions.Firstly,askincolormodelincomplicatedilluminationconditionswascreatedusingYCbCrcolorspace.Secondly,theskincolormodelwasappliedtodetectthefaceskincolorregionsintheinputimage.Finally,the4-connectedregionswerecalculatedinthedetectionresultandbeusedtoeliminatethenon-faceregionsandrecovertherealfaceregions.Theexperimentalresultsdemonstratethattheproposedmethodcandetectthefaceskincolorregionscorrectlyincomplicatedilluminationconditions.Keywords:YCbCr;skincolormode;lfaceskincolordetection;differentilluminationcondition;4-connectedregion0引言,,,,,[1],,,[2-5],,,,,,,[6][7-12],,[8]YCbCr,YCbCr,,(6(c))[11]HSI,HSI,(6(b)),,,,,1光照鲁棒的肤色模型1.1,RGB,RGB[13],YCbCrRGBHSIHSL,[8]:1)Y,;2)YCbCr,(1),,,RGBYCbCrRGBYCbCr(1)YCbCr=16128128+第30卷第6期2010年6月计算机应用JournalofComputerApplicationsVo.l30No.6June2010125565.481128.55324.966-37.797-74.203112.000112.000-93.786-18.214RGB(1)131.21.2.1复杂光照下的肤色样本选择,100,,21002(A~G)(A1~G1)1.2.2计算肤色模型SAj(j=0~99,100),wj,hj,xii,xi=(B,G,R)i,i=0~wjhj-1,(1)YCbCr,Vj:{Yi,Cbi,Cri}A[j,l](j=0~99,l=0~5),VjYiCbiCri,A[j,l],:A[j,0]=min(Yi)A[j,1]=max(Yi)A[j,2]=min(Cbi)A[j,3]=max(Cbi)A[j,4]=min(Cri)A[j,5]=max(Cri)(2)CbCr120~130,CbCr,()YCbCr,(2),Y230,(2)A[j,1]:max(Yi)230max(Yi)=((max(Yi)+min(Yi))/2(3),A[j,l]1006002人脸肤色检测2.1S,w,h,xiSi,(1)YCbCr,{Yi,Cbi,Cri}AYCbCr[i,l](i=0~wh-1,l=0~2)YCbCr:AYCbCr[i,0]=YiAYCbCr[i,1]=CbiAYCbCr[i,2]=Cri(4):A[j,0]AYCbCr[i,0]A[j,1]A[j,2]AYCbCr[i,1]A[j,3]A[j,4]AYCbCr[i,2]A[j,5](5),(B,G,R)=(0,0,0),(5)332.2,(3),2564-,,Li(xi1,yi1,xi2,yi2),(xi1,yi1)(xi2,yi2),wi=xi2-xi1,hi=yi2-yi1LiNi,Zi,:1)Ni/Zi0.5;2)Ni300;3)wi10hi10;4)wi20wi/hi0.5;5)hi20wi/hi1.81595第6期李全彬等:复杂光照下的人脸肤色检测方法4(3(d)),[14]0.8wi/hi2,[15]43(b),(d)2.3,,,S,2.2R,R,Li,xj(x,y)Li,xj1xj2:xj1{xj1(x-1,y)=0xj1(x,y)0xj1(x+1,y)0},xj2{xj2(x-1,y)0xj2(x,y)0xj2(x+1,y)=0},Rxj1xj2S,553(d)3实验500,[16]Caltech[17]6[8,11]150063(a)1/%[8]62[11]46[14]69924结语,YCbCr,,,,4-,,,,:[1]CHAID,NGANKN.Facesegmentationusingskin-colormapinvideophoneapplications[J].IEEETransactionsonCircuitsandSys-temsforVideoTechnology,1999,9(4):551-564.[2]DAIY,NAKANOY.Face-texturemodelbasedonSGLDanditsapplicationinfacedetectioninacolorscene[J].PatternRecogn-ition,1996,29(6):1007-1017.[3]CHENQ,WUH,YACHIDAM.Facedetectionbyfuzzypatternmatching[C]//ICCV95:FifthInternationalConferenceonCom-puterVision.Washington,DC:IEEEComputerSociety,1995:591-596.[4]MIYAKEY,SAITOHH,YAGUCHIH,etal.Facialpatterndetec-tionandcolorcorrectionfromtelevisionpicturefornewspaperprin-ting[J].JournalofImagingTechnology,1990,16(5):165-169.[5]CAIJ,GOSHTASBYA.Detectinghumanfacesincolorimages[J].ImageandVisionComputing,1999,18(1):63-75.[6]MARTINKAUPPIB,PIETIKAINENM.Facialskincolormodeling[M]//LISZ,JAINAK.Handbookoffacerecognition.Berlin:Springer,2005:113-135.[7]PHUNGSL,BOUZERDOUMA,CHAID.Anovelskincolormod-elinYCbCrcolorspaceanditsapplicationtohumanfacedetection[C]//2002InternationalConferenceonImageProcessing.Wash-ington,DC:IEEE,2002.[8]LINC.Facedetectionincomplicatedbackgroundsanddifferenti-lluminationconditionsbyusingYCbCrcolorspaceandneuralne-twork[J].PatternRecognitionLetters,2007,28(16):2190-2200.[9]deDIOSJJ,GARCIAN.FacedetectionbasedonanewcolorspaceYCgCr[C]//2003InternationalConferenceonImagePro-cessing.Washington,DC:IEEE,2003,2:909-912.[10]IKEDAO.SegmentationoffacesinvideofootageusingHSVcolorforfacedetectionandimageretrieval[C]//2003InternationalConferenceonImageProcessing.Washington,DC:IEEE,2003:913-916.[11],,.HSI[J].,2004,24(Z2):210-211.[12],.[J].,2009,29(3):785-788.[13]TORRESL,REUTTERJY,LORENTEL.Theimportanceofthecolorinformationinfacerecognition[C]//1999InternationalCon-ferenceonImageProcessing.Washington,DC:IEEE,1999:3627-3631.[14],,.YCgCr[J].,2007,34(5):228-233.[15],,.[J].,2009,30(1):251-254.[16]HONDD,SPACEKL.Distinctivedescriptionsforfaceprocessing[C]//Proceedingsofthe8thBMVC.[S..l]:BMVAPress,1997:320-329.[17]Caltechfaces[EB/OL].[2008-10-10].计算机应用第30卷
本文标题:复杂光照下-人脸肤色检测方法
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