小波分析及其在船舶圖像尺寸測(cè)量中的應(yīng)用.pdf

1、類號(hào)UDCTN9l學(xué)號(hào)：密級(jí)Q三蘭旦墨塑魚(yú)Q墜苧一玉河i每大蓐碩上學(xué)位論文小波分析及其在船舶圖像尺寸測(cè)量中的應(yīng)用王瑤指導(dǎo)教師姓名奎慶武副塾攫塑盤(pán)盔堂讓簋扭盈籃。包工程堂瞳塹蒸笪直立立煎逮路!羔申請(qǐng)學(xué)位級(jí)別工堂亟專業(yè)名稱通』主量籃J皇丕紅論文提交口期2Q逝生至旦論義答辯日期2QQ魚(yú)生3臼呈!目學(xué)位授予單位和口期一河連太堂2QQ生壘旦日答辯委員會(huì)主席：塞昌芏評(píng)閱人：奎富坐、壁棗基2006年3月中國(guó)南京AbstractWaveletanaly

2、sisisanovelresearchfieldThewavelettransformwaspublisheduptonowonlyformorethan10years，itwasreceivedfavorsininformationprocessingdomain，andthusitobtainedthewidespreadapplicationanddevelopment，andhastheenormoussuccessTostud

3、ythenewtheorymethodsandapplicationsofwaveletsisofgreattheoreticalsignificanceandpracticalvalueThispaperintroducedthewavelethistoryandthebasicconceptofthewavelettransformaswellassomeapplicationsintheimageprocessingThispap

4、erUSeSthewaveletanalysistomeasurethesizeofboatimageinthefreshwaterboatUsingsoft—hardthresholdingmethod，andviathresholdingoperationinwaveletdomain，noisecarlberestrained，andatthesametimeimageCanbereconstructedAwavelet—base

5、dapproachforimagecontrastenhancementisusedOnthebasisoftakingfulladvantageofmulti—scalewaveletanalysis，differentlyenhancesthecoefficientsateachscaleachievestheimagecontrastenhancement、vitIlthenonlinearprocessedcoefficient

6、atthesamescale，enhancescontrastofthelowfrequencysubbandimagewiththegoodwholeenhancingeffectTheresultofthealgorithmdemonstratesthatthealgorithmavoidsover—enhancementofnoisewhileenhancingcontrastoftheimagewithgoodvisualeff

7、ectAwavelettransformisperformedontheimagefunctiontodetectanimageedgeusingBsplinewaveletsThecontradictionbetweenthedetectionprecisionoftheimageedgesandtherestrainingabilityofanimagenoiseiswellresolvedbythismethodTheresult

8、provestheveracityandeffectivenessofthismethodAftertheimageedgeisdetected，thesizeoftheboatimageismeasuredUsingtheanomalousedgeshapeofboat，ImakeaMinimumEnclosingRectangle(MER)oftheimageedgeThentheproblemistranslatedintomea