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1、武漢理工大學碩士學位論文基于NiosⅡ的視頻采集系統(tǒng)設計姓名：陳志星申請學位級別：碩士專業(yè)：控制科學與工程指導教師：張素文20100501武漢理f：人學碩-f：。≯位論文ABSTRACTWiththerapiddevelopmentofcomputer,networkingandcommunicationtechnologies，digitalimageandvideohavebeenwidelyusedinsecuritysurveillance，industrialinspection，consumerelectronicsandintellig
2、enttransportationfields．Andhowtorealizethehigh—speeddataacquisitionofdigitalimageisakeytechnologyofdigitalimageprocessing．ThispaperhasdesignedavideoacquisitionsystembasedontheNiosIIsoft—coreprocessor．ThesystemcenteringonNiosIIembeddedprocessorandcombiningrichIPcoresrealizedthev
3、ideocollectionanddisplayingfunctionsinasingleFPGAchip．Firstly,thepaperanalyzesandcomparestheexistingprogramsandthenputsforwardmyowndesign．Mainlyexpoundingtheframeworkandrealizationprincipleofthevideoacquisitionsystem，andintroducingeachpartofsystemandselectingrelatedchipsinaccor
4、dancewithsystemdesignrequirements．Then，thedesignofCMOScontrollerandLCDcontrollerisdiscussedindetail．CMOScontrollercontrolscameratocollectandprocessimage，andthensenddatatoSDRAM．Forthispart，firstlyusingVeriloglanguagetosimulatetheIzCbustimingtorealizecamerainitialization，andthenc
5、ontrolcameratocollectimagedata．AndthenprocessingcolorspacetransformationforthesubsequentLCDdisplay．Meanwhile，theconvertedimagesareprocessedbymedianfilteringinordertoimprovethequalityofimages．Finally，AvaloninterfacesareaddedforCMOScontrollertocompleteIPcorepackaging．TheLCDcontro
6、lleristodriverLCDdisplaycollectedimage．Forthismodule，mainlycompletetimingcontrolmodule，DMAcontrollerreadsdatafromSDRAMandstoredinFIFO，andthentimingcontrolmodulereadthedatafromFIFOtoshowinLCDscreen．Aftereachmoduleisdesigned，allIPcoresneededareconfiguredtogettop-levelcircuitunder
7、theenvironmentofSOPCBuilder．Then，thesystemsoftwaredesignanddebugarecompletedinNiosI1IDEenvironmentusingClanguage，mainlyincludesdriverdevelopmentandapplicationdevelopment．Thedriversdirectlyconnectwiththehardwaremacrodefinition，andlI武漢理I：人學碩十學俯論文、NiosIIoperatescontrollersthrought
8、hedrivers．Forapplications，thispaperadoptsthesynchroniz
