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1、Topic5.HumanFacesHumanfaceisextensivelystudiedinvision.Dependingontheapplications,therearealonglistoftasks[5]:DetectionandRecognition:Facedetection(findingallfacesinapicture),facialfeaturedetection(eyes,lips,…),Facelocalization(detectingasinglefaceinimage),Facerecognitionoridentification(fromad
2、atabase,classification)Faceauthentication(verifyingclaim,bankid),Age/genderrecognition,Facetracking(locationandposeovertime)Facicalexpressionrecognition(affectivestates),aestheticstudy.ModelingandPhotorealisticSynthesis:Appearancemodels,deformabletemplates,lightingmodels,facialactionunits,faceh
3、allucination(highresolutionfromlowresolution),poseadjustment,imageediting(removingwrinkles,eyeglass,red-eyeetc.)3.ArtisticrenderingSketch,portrait,caricature,cartoon,painting,…FaceImageDatabasesTheCMURowleydatasetFaceImageDatabasesTheCMUSchneidrmanandKanadeDatasetReferences.1.P.Hallinan,G.Gordo
4、n,A.Yuille,P.Giblin,andD.Mumford,2Dand3DPatternsoftheFace,A.K.Peters,Ltd.Bookchapters2-4.(handouts).2.D.H.Ballard,"GeneralingtheHoughtransformtodetectarbitraryshapes",(inhandbook).3.P.ViolaandM.Jones,"RobustRealTimeObjectDetection",4.F.FleuretandD.Geman,"Coarse-to-finefacedetection",IJCV41(1/2)
5、,2001.5.M.H.Yang,D.Kriegman,N.Ahuja,“Detectingfacesinimages,asurvey”,PAMIvol.24,no.1,January,2002.6T.F.Cootes,G.J.EdwardsandC.J.Taylor."ActiveAppearanceModels",ECCV19987.C.Liu,S.C.Zhu,andH.Y.Shum,"LearninginhomogeneousGibbsmodelsoffacesbyminimaxentropy",ICCV2001.8.Y.Tian,T.Kanade,andJ.Cohn,"Rec
6、ognizingactionunitsforfacialexpressionanalysis"PAMI,Feb,2001.9.H.Chen,Y.Q.Xu,H.Y.Shum,S.C.Zhu,andN.N.Zhen,"Example-basedfacialsketchgenerationwithnon-parametricsampling",ICCV2001.OutlineWeproceedinthreesteps:AsurveyonfacedetectionandrecognitiontechniquesMathematicalmodelsoffaceimages3.Facesynth
7、esis:photorealisticandnon-photorealistic.FaceDetectionMethods[5]Facevsnon-faceClsutering6clustersina19x19space(SungandPoggio)DistanceMeasureD1D2Foreachinputimage,itmeasurestwodistancesforeachclustercenter:D1istheMahalanobisdistanc
