印鑒的配準(zhǔn)及識別方法研究.pdf

1、天津理工大學(xué)碩士學(xué)位論文印鑒的配準(zhǔn)及識別方法研究姓名：代紅維申請學(xué)位級別：碩士專業(yè)：信號與信息處理指導(dǎo)教師：馬社祥20100101AbstractWithstudyofmaturealgorithmsathomeandabroad，paperpresentsthestepwiserefinementbasedontemplatematchingofthesquaresealregistrationalgorithmandSIFTbase

2、donsquareswhichareformedbysegmentingsealFirstly，Templatematchingstepwiserefinementofthesquaresealregistrationalgorithmrou曲lymatchessealbymathgeomet叫computingButangleofre西strationerrorismorethaIl20Secondly，t11epapercomput

3、esmutualityofsealbycircumVolvingthetemplate、聊1enthemutualit)，isma)【，an西ewhicht鋤platecircumrotatesist11atthesealneedcircumvolveAngleofre百stratione門的rislessthan20aRerthisSt印Finally，bytllemethodofcoordinateprojection，thep印e

4、rcaIlexactlymatchthesealExp嘶mentsstalisticsshowthatⅡlisarithmeticc鋤reachrequestofexactmatchingSSIFT撕theticisbasedoncirquessquareswhicharefomedbyse舯entingsealFirstly，thepapcraIlalysesSIFTadVallcedbyDaVidG10weManysCholarSh

5、aVetestificdthatthecharactervectorsofSIFTareinv撕abletoeddy’moVea11daffinechaJlgeButSIFTfors刪ident墑cationhaSlotsoftimebyexp硎melltsSSIFTexcludespaniallyred啪dantpointbySobel撕t11111eticoperatorSands鋤pIesthesealagaininpolarCo

6、ordinatesnusesSobel撕thIlleticoperatorstoeliminatet11epointsoutofedgeThenwedispersethesealiIltosomesmancirquesSoCharacterVectorsmatchingareproceSsedontheparallelismcirquesExperilneIltstatisticsshowthatSIFTalgo—thmneedstod

7、ealwithmorethan2000featurepointsandtime—consumingisabout40sbutSSIFTonlyneedstodealwitllabout1000featurepointsa11dtimeconsumingisabout20sIdeIlti矗cationaccuracyofSSIFTalgo^t11InislesstllanSIFTa190rithmButitisstillmorethaIl