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1、SingleImageFocusEditingWeiZhangandWai-KuenChamDepartmentofElectronicEngineeringTheChineseUniversityofHongKong,Shatin,N.T.,HongKong{zhangwei,wkcham}@ee.cuhk.edu.hkAbstractInthispaper,wepresentapostprocessingapproachtotacklethesingleimagefocuseditingproblem.Indetail,t
2、heproposedmethodcanaccomplishthetasksoffocusmap(a)(b)(c)estimation,imagerefocusinganddefocusing.Givenanim-agewithamixtureoffocusedanddefocusedobjects,wefirstdetecttheedgesandthenestimatethefocusmapbasedontheedgeblurrinesswhichisdepictedexplicitlywithawell-parameteriz
3、edmodel.Theimagerefocusingproblem(d)(e)(f)isaddressedinanelaborateblinddeconvolutionframe-work,wheretheimagepriorismodeledwellbyusingbothFigure1.(a)Theinputphotocapturedwithnarrowapertureandglobalandlocalconstraints.Especially,wecorrectthede-focusedontheforegroundob
4、ject;(b)Thesynthesizedphotowithfocusedblurryedgestosharponeswiththeaidofthepara-shallowerDOF;(c)Thesynthesizedall-focusedphoto;(d)Themetricedgemodelandthenrenderthiscueasanovellocalsynthesizedphotofocusedonthebackground;(e)Thedetectedfocusmask.(white:defocusedregion
5、s;black:focusedregions;priortoensurethesharpnessoftherefocusedimage.Ex-gray:focusboundaries);(f)Close-upcomparison.Left:removingperimentalresultsdemonstratethattheproposedapproachthelensblurusingthesmartsharpenofPhotoshop;Right:ourperformswellinproducingdifferentsty
6、lesofrealisticim-refocusedresult.agesfromasingleinputbyfocusediting.groundwhilekeeptheforegroundunchanged.Soaportrait-1.IntroductionlikephotowithshallowerDOFisproducedasshownin(b).ImagefocuseditingisaninterestingresearchtopicandSecondly,wecanalsorefocusthedefocusedb
7、ackgroundhasreceivedalotofattention(e.g.[1,2,3,4,8,9])recently.togenerateanall-focusedimageasshownin(c).Besides,Twoproblemsaremainlyinvolvedinthistopic.Oneisim-asshownin(d),thehighlightoftheinputphotoischangedagerefocus,whoseinterestistorecoverthesharpnessofafterdef
8、ocusingtheoriginalfocusedforegroundonthesyn-theblurrydefocusedimage.Theotherisdefocusmagnifi-thesizedall-focusedresult.Thecomparisonin(f)in
