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1、哈爾濱工程大學(xué)碩士學(xué)位論文車輛牌照定位及字符分割研究姓名：宋建華申請學(xué)位級別：碩士專業(yè)：信號與信息處理指導(dǎo)教師：張磊20081201哈爾濱工程大學(xué)碩士學(xué)位論文傾斜矯正和字符分割，為后續(xù)的字符識別創(chuàng)造了條件。關(guān)鍵詞：車牌定位；數(shù)學(xué)形態(tài)學(xué)；傾斜矯正；字符分割哈爾濱工程大學(xué)碩十學(xué)位論文i；；；；；；；；iiiii；；；；；；iii；；i；i；II—IIiiIIIm；；；；iABSTRACTInrecentyears，intelligenttrafficsystemisbecomingincreasinglyimportantwiththeincreaseofroadtrafficaswel
2、lasthedevelopmentofthenationaleconomy．Automaticlicenseplaterecognitionsystem(LPRS)，atechnologywhichcarlbeavidlyappliedtoareassuchastrafficadministrationdepartment，speedway,bridge，electronpolicemanandcustom，etc，isthereforeavitalcomponentinITSandpromisesabrightoutlook．Basedondigitalimageprocessin
3、gtechnology,computervisiontechnologyandpattemrecognitiontechnology,licenseplaterecognitionsystemisdeeplyresearchesandanalyses．Someimprovementsandinnovationonlicenseplatelocation，slantcorrectionoflicenseplateandcharacterssegmentationCanbemadeinthispaper．Inthestageoflicenseplatelocation,allalgori
4、thmoflicenselocationbasedonmathematicalmorphology．Firstofall，analyzingtexturefeaturesoflicenseplateinorderofpriorimageknowledge，andwipingofftheregionofpseudolicenseplatetoUSemathematicalalgorithmsofimagingprocessing，therefore，theaccuratelocationofthelicenseplatewascompleted．Inpracticalapplicati
5、ons，sometimesduetotheshootingangle，distanceandlicenseplateitselfistilted，ere，thereisacertaindegreeofslantafterthelicenseplatelocation,thisisaverybadimpactonaccuratesegmentationofthelicenseplatecharacters．Inthispaper,aalgorithmisadoptedbasedonRadontransform,itisacorrectivealgorithmthroughsearchi
6、ngthestraightlineofrectangularplateandcalculatingtheslantangleofthelicenseplate，thealgorithmrectifytheslantplatethroughmakinguseofthecombinationofedgedetectionofimageandRadontransfo吼，thismethodreceivedagoodresult．Characterssegmentationmeansthataseriesofsinglecharacterimageare哈爾濱：r=程大學(xué)碩十學(xué)位論文extr
7、actedfromplateregionimages．Therearealotofproblemsondirectuseoftraditionalprojectionofimagestofindtheboundaryofcharacters，inthispaper，allsegmentationalgorithmbasedonprojectionandLicenseplatecharactersrulesWasused．Firstofall，therear
