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电子信息工程专业毕业论文文献翻译中英文对照.doc
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附录附录A 外文资料TheresearchofdigitalimageprocessingtechniqueIntroductionInterestindigitalimageprocessingmethodsstemsfromtwoprincipalapplicationareas:improvementofpictorialinformationforhumaninterpretation;andprocessingofimagedataforstorage,transmission,andrepresentationforautonomousmachineperception.Thischapterhasseveralobjectives:(1)hescopeofthefieldthatwecallimageprocessing;(2)togiveahistoricalperspectiveoftheoriginsofthisfield;(3)togiveanideaofthestateoftheartinimageprocessingbyexaminingsomeoftheprincipalareainwhichitisapplied;(4)todiscussbrieflytheprincipalapproachesusedindigitalimageprocessing;(5)ponentscontainedinatypic叭general-purposeimageprocessingsystem;and(6)toprovidedirectiontothebooksandotherliteraturewhereimageprocessingworknormallyisreporter.WhatIsDigitalImageProcessing?Animagemaybedefinedasatwo-dimensionalfunction,f(x,y),wherexandyarespatial(plane)coordinates,andtheamplitudeoffatanypairofcoordinates(x,y)rayleveloftheimageatthatpoint.Whenx,y,anddigitalimage.puter.posedofafinitenumberofelements,eachofwhichhasaparticularlocationandvalue.Theseelementsarereferredtoaspictureelements,imageelements,pels,andpixels.Pixelisthetermmostwidelyusedtodenotetheelementsofadigitalimage.Visionisthemostadvancedofoursenses,soitisnotsurprisingthatimagesplaythesinglemostimportantroleinhumanperception.However,ic(E11)spectrum,imagingmachinescoveralmosttheentireEMspectrum,rangingfromgammatoradiowaves.ustomedtoassociatingwithimage.theseincludeultrasound,electronmicroscopy,puter-generatedimages.Thus,passesawideandvariedfieldofapplication.Thereisnogeneralagreementamongauthorsregardingwhereimageprocessingstopsandotherrelatedareas,putervision,start,sometimesadistinctionismadebydefiningimageprocessingasadisciplineinwhichboththeinputandoutputofaprocessareimages.Webelievethistobealimitingandsomewhatartificialboundary.Forexample,underthisdefinition,putingtireaverageintensityofanimage(whichyieldsasinglenumber)wouldnotbeconsideredanimageprocessingoperation.Ontheotherhand,putertoemulatehumanvision,includinglearningandbeingabletomakeinferencesandtakeactionsbasedonvisualinputs.Thisareaitselfisabranchofartificialintelligence(AI)whoseobjectiveistoemulatehumanintelligence.ThisfieldofAIisinitsearlieststagesofinfancyintermsofdevelopment,withprogresshavingbeenmuchslowerthanoriginallyanticipated.Theareaofimageanalysis(alsocalledimageunderstanding)putervision.Therearenoclear-putervisionattheother.However,puterizedprocessesisthiscontinuum:how-,mid-,andhigh-everprocesses.low-levelprocessesinvolveprimitiveoperationsuchasimagepreprocessingtoreducenoise,contrastenhancement,andimagesharpening.Alow-levelprocessischaracterizedbythefactthatbothitsinputandoutputareimages.mid-levelprocessingonimagesinvolvestaskssuchassegmentation(partitioninganimageintoregionsorobjects),puterprocessing,andclassification(recognition)ofindividualobject.amid-levelprocessischaracterizedbythefactthatitsinputsgenerallyareimages,butitsoutputisattributese 内容来自淘豆网www.taodocs.com转载请标明出处.
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