高分辨率可見光遙感圖像的港口變化檢測方法研究.pdf

1、中國科學技術大學碩士學位論文高分辨率可見光遙感圖像的港口變化檢測方法研究姓名：鄭孝娟申請學位級別：碩士專業(yè)：信號與信息處理指導教師：徐守時20080501AbStractAbstractNowadaysremotesystemcanproVide伊eatcapac姆ofremotesensingdatafortheresearchofchangedetectionHo、ⅣeVer，howtofindchangewithremotedat

2、aaccuratelyaJldquicklyaIldhowtoextractchangeablearea矗omimagesautomatically，thosetheoriesandtechn0109ymakegreateffectonthefutureofremotetecllllology’deVelopmemImagechangedetectiontecluliquesaimtodetectmechangesinthesamear

3、eaoVertimeTheyareVe巧irnportantinremotesensingtechniquesandarewidelyusedinmaIlyfieldssuchaSenViroment，agricultures，、vaterconservaIlcyandmilitaⅨThispaperdiscussesthemainmethodofchangedetectionfromM曲resolutionremotesensingi

4、mageatpresentandanalyzesthefeaturesofponandneetBasedonwhetherthereispriorinfornlationornot，、veproposetwodifferentblueprintstealizetllechangedetectionsystemandeVengiVeaccuratenowaJldwholedesignD嘶ngthefeatureaIlalysis，gene

5、ratingSIFTfeaturesaIldmatching也eoD，areintroducedandexperimentalresultsshowthisfeaturecanbecollrectlymatchedwithhighprobabilityagainstala唱edatabaseoffeaturesfrommaJlyimagesnlenSIFTwouldbeappliedteVisionofpriorinformationa

6、11dregistrationbetweenmulti—temporalimagesThechangedetectionbasedonpriorinfo咖ationisproposedtealizetIlespecifict2IrgetschangedetectionThestepsofthischangedetectionmethodare：establishingpolycoordinate，extractingpriorinfo眥

7、ation，mappingpriorinfomation，鋤endingthecontrollinglinesofpriorinfo肌ation，detectingthefleetf如msubimage，detemliningthepositionsofthespecmctargets，comp撕ngthepositionsofthefleetinthereferenceimageandthedetectingimagerespecti

8、Vely，repoIrtingthechangeinformationAttheStageofchangedetection，thispaperproposestwojudgingmethod，whichareappliedtojudgechange行omspecinctargetsWhat’smore，howtoselectjudgingthresholdandjudginge盯0rpossiblycausedby衄esholdare

9、analyzed，accordingtoco玎espondingsituationThechangedetectionbasedonnopriorinfbnnationisproposedtorealizethechangedetectionsystembyregisteringthemulti—dateimagepairsARertheimagesegment，binaryimageandedgeimagecouldbeobtaine

10、dShipsidecontourvectorscanbeextractedbyVectorsearchingalgoritm，thenmerelationshipbetweenvectorsbeanalyzedtopaIrtfleets行omshipsidecontoursAtthestageofdetection，anewalgorittunbasedonregionstatisticalfeaturesandselfadaptiVe