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ID:40101723
大小:2.45 MB
页数:8页
时间:2019-07-21
《Single Image Haze Removal Using Dark Channel P...》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、SingleImageHazeRemovalUsingDarkChannelPriorKaimingHe1JianSun2XiaoouTang1,21TheChineseUniversityofHongKong2MicrosoftResearchAsiaAbstractInthispaper,weproposeasimplebuteffectiveimageprior-darkchannelpriortoremovehazefromasin-gleinputimage.Thedarkchannelpriorisakindofstatis-ticsofthehaze-f
2、reeoutdoorimages.Itisbasedonakeyobservation-mostlocalpatchesinhaze-freeoutdoorim-agescontainsomepixelswhichhaveverylowintensitiesinatleastonecolorchannel.Usingthispriorwiththehazeimagingmodel,wecandirectlyestimatethethicknessofthehazeandrecoverahighqualityhaze-freeimage.Resultsonavariet
3、yofoutdoorhazeimagesdemonstratethepoweroftheproposedprior.Moreover,ahighqualitydepthmapcanalsobeobtainedasaby-productofhazeremoval.Figure1.Hazeremovalusingasingleimage.(a)inputhazeimage.(b)imageafterhazeremovalbyourapproach.(c)ourrecovered1.Introductiondepthmap.Imagesofoutdoorscenesareu
4、suallydegradedbytheturbidmedium(e.g.,particles,water-droplets)intheatmo-contrastsceneradiance.Last,thehazeremovalcanproducesphere.Haze,fog,andsmokearesuchphenomenaduedepthinformationandbenefitmanyvisionalgorithmsandtoatmosphericabsorptionandscattering.Theirradianceadvancedimageediting.Ha
5、zeorfogcanbeausefuldepthreceivedbythecamerafromthescenepointisattenuatedclueforsceneunderstanding.Thebadhazeimagecanbealongthelineofsight.Furthermore,theincominglightisputtogooduse.blendedwiththeairlight[6](ambientlightreflectedintoHowever,hazeremovalisachallengingproblembecausethelineof
6、sightbyatmosphericparticles).Thedegradedthehazeisdependentontheunknowndepthinformation.imageslosethecontrastandcolorfidelity,asshowninFig-Theproblemisunder-constrainediftheinputisonlyasin-ure1(a).Sincetheamountofscatteringdependsonthedis-glehazeimage.Therefore,manymethodshavebeenpro-tanc
7、esofthescenepointsfromthecamera,thedegradationposedbyusingmultipleimagesoradditionalinformation.isspatial-variant.Polarizationbasedmethods[14,15]removethehazeeffectHazeremoval1(ordehazing)ishighlydesiredinboththroughtwoormoreimagestakenwithdifferentdegreesofconsumer/computation
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