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1、北京交通大學(xué)碩士學(xué)位論文基于動(dòng)態(tài)閾值的圖像顯著區(qū)域?qū)哟螜z測(cè)方法姓名:葛濤申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師:須德20061201ABSTRACr.IIlresentyears,saIientrc酉onsdetectionh弱becomeaextremelyactiVercsearchfield.Atprcsent,thereexistsomemechodsforsalientre百onsdetection,suchas:ConImst.baSedimagcattenIionanalys
2、isbyusingfIIzzygrowin舀SVM.basedsaljentre百on(s)extradionmeIhodforimagerctrieval,andsoon..ThesemethodsgcnemlIydealwithpenin6ncc鋤0ngtheinvolvedpjxelsinordertofIllfiUourgoalofsaIientrc百onsdetection.But,thesemethodsignorethereIationshipamongpixels,andcanno
3、tproVidesalisfyingresuIts.Thisdissertationimpmvesthemodelfordetectingsalient比百onsbasedonIayers.W毫firstdiVidetheimageintolayers.Andfor“erylaycr'wecaIculatesaliency,alldIhenaddlhercsultsofcveryIayeLWbusedyn鋤icthrcsholdtoextractsalientrc百on&Forcverylaycr
4、'cxtmclsbasiccharacteristicsandcalcllIatessaIkncycharact麗sticsincludingintensitysaliency;saturationsaliencyandcolorsaIiency:Andthen,wesyIlthesizeandanalyzecverycharaI。teristict0eliminatethee疵c【ofnoisepixelsonsalientre百onsdetection.Becauscofthepossibil
5、itychamcteristicsofimages,theplanarno肺aldistribulionfllnclioncantakecha唱eofthcpeninenceOfpixelsaccIImtelyandrcasonably.T1lisstepisthekeyofsalientre沓onsdetection.Ononehand,itcanmakesaHentre西onsdctectiOncoherenny.Ontheothcrhand,itcantakethepcrtinenccofp
6、i】‘elsintoconsiderationandeliminatethee丘.ectofnoisepixelsonsaIientre西onsdetection.WeaddtheresuItsoflayers.Outofconsiderationofthestatisticsfeaturc,weusethedynamiclhrcshold,andthenrcachlhefillalsaliencyrcgiolls.1’lledynamicthrcsholdtendstoadaptwelIgett
7、ing瑚ofthee虢ctoftheori百nalimagcs.weapplythismethodtorcalimages,andfinaIlygetasatisfyingresult.KEYWORDS:salientrc舀on,saliencycharacIeristic’Visualattcntion,dynamictlIresholdCLASSN0:口391致謝在北京交通大學(xué)三年的碩士學(xué)習(xí)生活即將結(jié)束,在這段難忘的日子里,除了得到家人朋友的鼓勵(lì)和支持以外,最大的收獲是我有幸遇到很多良師益友。
8、在此對(duì)他們表達(dá)我最誠(chéng)摯的感謝!首先,我要將最誠(chéng)摯的謝意獻(xiàn)給我的導(dǎo)師須德教授,感謝他在我的研究生學(xué)習(xí)期間給予了我學(xué)業(yè)上的諄諄教導(dǎo)和生活上無(wú)微不至的關(guān)懷。須老師是一位有著淵博的知識(shí)、嚴(yán)謹(jǐn)?shù)闹螌W(xué)態(tài)度,創(chuàng)新的思想、謙遜的作風(fēng)和平易近人性格的導(dǎo)師。三年來(lái),導(dǎo)師的言傳身教不僅使我在學(xué)業(yè)上受益匪淺,而且還讓我學(xué)會(huì)了不少為人處事的真諦。在本文的撰寫過(guò)程中,須老師給予了我大量的鼓勵(lì)和指導(dǎo),使我得以順利完成學(xué)業(yè),并提高了獨(dú)立學(xué)習(xí)和科研能力,為今后的繼續(xù)學(xué)習(xí)乃至工作打下了堅(jiān)實(shí)的基礎(chǔ)。值此論文完成之際,我