圖像處理技術(shù)在連鑄坯裂紋檢測(cè)中的應(yīng)用研究.pdf

1、東北大學(xué)碩士學(xué)位論文圖像處理技術(shù)在連鑄坯裂紋檢測(cè)中的應(yīng)用研究姓名：胡振偉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：檢測(cè)技術(shù)與自動(dòng)化裝置指導(dǎo)教師：謝植20060201東北大學(xué)碩士學(xué)位論文AbstmctStudyontheContinuousCastingBillet’SCrackDetectwithImageProcessingTechnologyAbstractCrackisanimportantparameterofcontinuouscastingb

2、illet’squalityInthispaperuseImageProcessingtechnologyinsteadofhumandetecttoimplementtheautodetectingofcrackEscapetheinterruptionofhumanfactorthenthedetectspeedandefficiencyisimprovedThepaperhasdetectedthecontinuouscastin

3、gbillet’ScrackbasedonImageProcessingtechnologyAnalyze“thevisualcharacteristic，imageelementcharacteristic，noisecharacteristicofthecrackimageAccordingtothecharacteristicchoosetherightarithmeticssuchasadvanceprocess，Mathema

4、ticalMorphologyprocess，remarkthecrackwithinterconnecteddomaindetecttopracticethecrackdetect(1)AccordingtothecharacteristicofthecrackimagechoosetherightarithmeticsThenanalysisandexpatiateuponthearithmeticusedincrackdetect

5、ing，alsoprogrammingtheprogramcorrespondtothearithmeticsUsegrayarithmeticchangethecolorimageintograyimageSOthatCanmakethefollowingprocessingmucheasier；usemiddlevaluefilterteducethenoiseoftheimage，thentheimagebecomemoresmo

6、oth；calculatethethresholdvalueoftheimageaccordingtotheprobabilityoftheelement’Svalue，thencallthethresholdtransformationfimctiontodividethegralyimageintowhite—blacktwovalueimage；onthewhite—blacktwovalueimage(2)UseMathemat

7、icalMorphologyoperationtesumeandstrengthenthecrackareaintheimagesuchaserodentoperation，dilatedoperation，regiongrow(3)RemarkthecrackwithinterconnecteddomaindetectFor12crackimagesasthreestepsofcrackimagepretreatment，crackM

8、athematicalMorphologyoperation，crackinterconnecteddomaindetectfinishedthecrackdetectGivesouttheresultanddata，thenanalysesthereasonwhythecracksCannotbedetectedTotallythereare4reasons，accordingthisreasonsomesuggestionsarep