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ID:5219768
大小:2.07 MB
页数:70页
时间:2017-12-06
《ccd的图像采集软件系统的设计与实现硕士学位论文》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、IIIimplement.Final,thetestofthesystem'shardwareandsoftware.Thetestresultsshowthatthedesignachievedtheacquistionfunctionandgoodperformance.Atthesametime,thesystemachievedtheexpectedacquisitionspeedandqualityofthecollectedimage.Keywords:Scanner,CCD,Man-machineinterface,Multithread,Memorym
2、anagementIIABSTRACTTheMulti-CCDscannerswhicharewidelyusedinprinting,scientificresearch,medicalandotherfieldshaveimportantapplicationsinoptical-electronic-machineryintegrationequipment.Atpresent,withtherapiddevelopmentalotofindustriesneedtoarchivelargeformatmaterials.Therefore,thedemandf
3、orlarge-formatscannerisincreasing,whilepromotingthedevelopmentandproductionoflargeformatscanners.Themainworkofthelarge-formatscanneristoconverttheanalogsignaltothedigitalsignalwhichthecomputercanidentifyafterconvertingtheimage'sopticalsignaltotheanalogsignal.Inordertoscanlargeformatimag
4、es,aneffectiveapproachistocaptureimagesthroughmultiplesensors,thensplicetheimagetocompletethelarge-formatscanner'swork.ThescannerusefoursametypeCCDtocapturetheimagesthensplicethemintoone.WhilethefourCCDsscanasynchronouslytoaccomplishthephotoelectricconversionintheprocess.Themainworkofth
5、ispapercanbedividedintotwoparts,hardwareandsoftwaredesign.Thefirstpartisthehardwarework,afteranalyzingthelargeformatscanner'sworkingprincipleandhardwaresystem'sperformanceparametersthedevelopmentcontentandfocusesoftheworkoflarge-formatscannerhasbeendetermined.Thedeviceshavebeenselecteda
6、ccordingtotheparameters.ThenwefinishedthescannerhardwarecircuitdesignandFPGA'stimingdesignincludingthedriverandconfigurationofthedigital-to-analogconversionchip.Thisistheimportantfactortotheimagequality.Convertingtheopticalsignaltotheanalogsignallaidafoundationtoenhanceimagequalitywhich
7、isthekeytolarge-formatscanning.Thesecondpartisabouttheuppersoftwaresystemdevelopment.Aboutthisthepaperintroducedthedemand,thedivisionofthefunctionalmodulesofthesoftwareandthethree-tierstructureofthelarge-formatscannersoftwaresystemfirstly.Thenthepaperdetailedthescanninginterfac
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