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1、外文资料翻译资料来源文章名：ADescriptiveAlgorithmforSobelImageEdgeDetection书刊名：ProceedingsofInformingScience&ITEducationConference(InSITE)作者：O.R.Vincent，O.Folorunso出版社：IEEETransactionson2009页码：2009:97-107.文章译名：索贝尔图像边缘检测算法描述外文原文：ADescriptiveAlgorithmforSobelImageEdgeDetectionAbstractImageedgedetectionisaproce
2、ssoflocatingtheedgeofanimagewhichisimportantinfindingtheapproximateabsolutegradientmagnitudeateachpointIofaninputgrayscaleimage.Theproblemofgettinganappropriateabsolutegradientmagnitudeforedgesliesinthemethodused.TheSobeloperatorperformsa2-Dspatialgradientmeasurementonimages.Transferringa2-Dpix
3、elarrayintostatisticallyuncorrelateddatasetenhancestheremovalofredundantdata,asaresult,reductionoftheamountofdataisrequiredtorepresentadigitalimage.TheSobeledgedetectorusesapairof3x3convolutionmasks,oneestimatinggradientinthex-directionandtheotherestimatinggradientiny–direction.TheSobeldetector
4、isincrediblysensitivetonoiseinpictures,iteffectivelyhighlightthemasedges.Hence,Sobeloperatorisrecommendedinmassivedatacommunicationfoundindatatransfer.Keywords:ImageProcessing,EdgeDetection,SobelOperator,DataCommunicationandAbsoluteGradientMagnitude.IntroductionImageprocessingisimportantinmoder
5、ndatastorageanddatatransmissionespeciallyinprogressivetransmissionofimages,videocoding(teleconferencing),digitallibraries,andimagedatabase,remotesensing.Ithastodowithmanipulationofimagesdonebyalgorithmtoproducedesiredimages(Milanetal.,2003).DigitalSignalProcessing(DSP)improvethequalityofimagest
6、akenunderextremelyunfavourableconditionsinseveralways:brightnessandcontrastadjustment,edgedetection,noisereduction,focusadjustment,motionblurreductionetc(Gonzalez,2002).Theadvantageisthatimageprocessingallowsmuchwiderrangeofalgorithmstobeappliedtotheinputdatainordertoavoidproblemssuchasthebuild
7、-upofnoiseandsignaldistortionduringprocessing(Baker&Nayar,1996).Manyofthetechniquesofdigitalimageprocessingweredevelopedinthe1960'sattheJetPropulsionLaboratory,MassachusettsInstituteofTechnology(MIT),Belllaboratoryandfewotherplace
