基于多特征的高分辨率遙感圖像分類技術(shù)研究.pdf

1、中南林學院博士學位論文基于多特征的高分辨率遙感圖像分類技術(shù)研究姓名：林輝申請學位級別：博士專業(yè)：森林經(jīng)理學指導教師：李際平20050601第8頁共139頁基于多特征的高分辨率遙感圖像分類技術(shù)研究中南林學院博士學位論文AbstractRemotesensingtechnologyhasobtainedgreatachievementsinresentyears，oneofthemostoutstandingexamplesisthehig

2、h—resolutionremotesensing，whichwidensanddepthenstheapplicationofremotesensing，andbringsvigortemotesensingHoweverpeopleareoftencaughtunpreparedwhilejoyingforthisnewtechnologyThetechnologyandmethodsofremotesensinghavebeenb

3、uiltonlowormedium—resolutionimageforalongtime，andtheydon’tworkwellasexpectedtohigh—resolutionimages，thusit’simportantandurgenttostudynewmethodstoprocessthehigh—resolutionremotesensingimagesSothispaperexploredtheprocessio

4、nandclassificationofhighresolutionremotesensingimages，andthemainresultsarefollowing：1ThecontraststudyofspectralcharacteristicsofdifferentlandtypesbothonthegroundandontheQuiciBirdimageInthisresearch，thestudyareawasdivided

5、into6landtypes：road，waternakedland，farlTlland，residentialareaandwoodlandThespectralcurvesofalllandtypesweregotbymeasuringonthegroundandreadingontheQuickBirdimagerespectively4gradesweredividedaccordingtothedifficultyofide

6、ntification：theeasiestisroadandwater，thefollowingisnakedlandandconiferandthemostdifficultisresidentialareafarmlandandbroadleafarelessdimcult2Studyontheprecisionanddensityofgroundcontrolpoints(GCPs)ThisstudyshowedthattheG

7、CPsshouldbechosenfromlargescaletopographicmapsduringcorrectinghigh—resolutionremotesensingimages，suchas1：500TheGCPsshouldbemuchdenserthanthoseofmediumorlow—resolutionremotesensingimages1GCPper10km2isneededforQuickBirdima

8、gecorrectionatleast，thedensertheGCPsare，thehighertheprecisionis3Theaffectionofresolutionsonthetraditionalmethodsofclassification6kindsoflandtypesweredevidedandvisualinterpretedSupervisedandunsupervisedclassificationwered

9、onerespectivelytothedifferentresolutionremotesensingimageslikeTM，ETMandQuickBirdaftersimilarbandscombinationandsamepreprocessingTheresultsshowedthat：theprecisionofsupervisedandunsupervisedclassificationwereverylowandthep