CCD的图像采集软件系统的设计与实现.docx

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1、IIIimplement.Final,thetestofthesystem'shardwareandsoftware.Thetestresultsshowthatthedesignachievedtheacquistionfunctionandgoodperformance.Atthesametime,thesystemachievedtheexpectedacquisitionspeedandqualityofthecollectedimage.Keywords:Scanner,CCD,Man-machineinterface,Multithread,Memo

2、rymanagementIIABSTRACTTheMulti-CCDscannerswhicharewidelyusedinprinting,scientificresearch,medicalandotherfieldshaveimportantapplicationsinoptical-electronic-machineryintegrationequipment.Atpresent,withtherapiddevelopmentalotofindustriesneedtoarchivelargeformatmaterials.Therefore,thed

3、emandforlarge-formatscannerisincreasing,whilepromotingthedevelopmentandproductionoflargeformatscanners.Themainworkofthelarge-formatscanneristoconverttheanalogsignaltothedigitalsignalwhichthecomputercanidentifyafterconvertingtheimage'sopticalsignaltotheanalogsignal.Inordertoscanlargef

4、ormatimages,aneffectiveapproachistocaptureimagesthroughmultiplesensors,thensplicetheimagetocompletethelarge-formatscanner'swork.ThescannerusefoursametypeCCDtocapturetheimagesthensplicethemintoone.WhilethefourCCDsscanasynchronouslytoaccomplishthephotoelectricconversionintheprocess.The

5、mainworkofthispapercanbedividedintotwoparts,hardwareandsoftwaredesign.Thefirstpartisthehardwarework,afteranalyzingthelargeformatscanner'sworkingprincipleandhardwaresystem'sperformanceparametersthedevelopmentcontentandfocusesoftheworkoflarge-formatscannerhasbeendetermined.Thedevicesha

6、vebeenselectedaccordingtotheparameters.ThenwefinishedthescannerhardwarecircuitdesignandFPGA'stimingdesignincludingthedriverandconfigurationofthedigital-to-analogconversionchip.Thisistheimportantfactortotheimagequality.Convertingtheopticalsignaltotheanalogsignallaidafoundationtoenhanc

7、eimagequalitywhichisthekeytolarge-formatscanning.Thesecondpartisabouttheuppersoftwaresystemdevelopment.Aboutthisthepaperintroducedthedemand,thedivisionofthefunctionalmodulesofthesoftwareandthethree-tierstructureofthelarge-formatscannersoftwaresystemfirstly.Thenthepaperdetailedthescan

8、ninginterfac