直接数字化X线摄影系统图像处理方法研究
AbStract
soIVetheenergyconVersionproblemsfIromtheX—raytothecomputer.ARerhaVing
acbjeVedmeX—rayimages,weutiIize
如nherimproVe也eimagequaIi够,so
outin-dept量lresearchaVarie够ofimageprocessingtoalgoritmst0aSsatis母theappIications.WehaVeca而edon也eDRimagingsystem,andseVemipro血Ictionshavebeen
achievedaSfoIlowing:
(1)Aproposalispresentedt0improVetheoriginalcomplicatedcontrolofthe
par锄eterson血eDRsystem.Weredesignedmeinterf孔ecircui仃yof
龇hi曲-Vol协gegeneratorbyuSingRS一232serialCOMport.T11edataandexpoSure
signalsare仃anSminedbe嘶eenpersonalcomputeralldhigh—voltagegenerator
designedtorealizethecon_trolofthe
onwitllserialmode.Aprogr锄packageishi曲-VoltexposureparametersforgeneratorofDRthePCmachine.
1jkperilnentresultssho、Ⅳnthattheproposedconsoleoperatessteadilyand“is
possibletoproVideamorecorlVenientoperationconsoleforthedirect
radiographysystem.
(2)Thesignalcon仃olstrateg),inaMa仃oxMeteorII/CameraLinkcard.basedDR
imageacquisitionsystemhasbeenstudied.Wbdesignedttleprocessingflowfor
St曲峪controlanddataprocessofmenatpanel.A1ineintervalscaIla11darea
exchangealgorithmispresentedtoprocesstheoriginalimagedataacquiredfrom
medetectorarray.TheproblemontheadjustrIlentoft11e
hasbeens01Vedsuccessf-ully,andaabnomaloriginalimageprogramisdeVeIopedforDRimage
onacquisition,displayaIldstorage.ExperimentalresultswatermodelsaIldhuman
bodiesshowmatmeInethodsdescribedhereⅥ,erecorrectandcredible,and血e
digitalx-rayimageswereValid.Ithasbeenappliedintlleclinicalpracticesofnle
DRsvstem.
(3)Based
ourontheprincipleofDRimagingonandtheimageacquisitionprocess,wetaketotllepointofViewmeenergyconVersionperspectiVefromtheX—ray
computer.AdetailedstudyhaSbeenc秭edoutontheimagenoiseproducedby
tlleinhomogenei锣ofmeX—rayfieIdandmeflatpaneldetectorpixelresponse.
Accordingt0meVariousfactors,correspor通ingcorrec缸onmethodshaVebeen
introduced.Finally,forthemlcertain够oftheX-raysystem
IVatuse,weextracta
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