基于NiosⅡ的视频采集系统设计

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1、武汉理工大学硕士学位论文基于NiosⅡ的视频采集系统设计姓名：陈志星申请学位级别：硕士专业：控制科学与工程指导教师：张素文20100501武汉理f：人学硕-f：。≯位论文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武汉理I：人学硕十学俯论文、NiosIIoperatescontrollersthrought

8、hedrivers．Forapplications，thispaperadoptsthesynchroniz