[2003 SPM] Super-Resolution Image Reconstruction A Technical Overview

《[2003 SPM] Super-Resolution Image Reconstruction A Technical Overview》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、Super-ResolutionImageReconstruction:ATechnicalOverviewnmostelectronicimagingapplica-tions,imageswithhighresolution(HR)aredesiredandoftenre-Iquired.HRmeansthatpixelden-sitywithinanimageishigh,and©DIGITALVISION,LTD.thereforeanHRimagecanoffermoredetailsthatmaybecriticalinvariousap-plications

2、.Forexample,HRmedicalimagesareverygradestheimagequalityseverely.Toreducethepixelsizehelpfulforadoctortomakeacorrectdiagnosis.Itmaybewithoutsufferingtheeffectsofshotnoise,therefore,easytodistinguishanobjectfromsimilaronesusingHRthereexiststhelimitationofthepixelsizereduction,andsatelliteim

3、ages,andtheperformanceofpatternrecogni-theoptimallylimitedpixelsizeisestimatedatabout40tionincomputervisioncanbeimprovedifanHRimageµm2fora0.35µmCMOSprocess.Thecurrentimageisprovided.Sincethe1970s,charge-coupleddevicesensortechnologyhasalmostreachedthislevel.(CCD)andCMOSimagesensorshavebee

4、nwidelyusedAnotherapproachforenhancingthespatialresolutiontocapturedigitalimages.Althoughthesesensorsaresuit-istoincreasethechipsize,whichleadstoanincreaseinca-ableformostimagingapplications,thecurrentresolutionpacitance[1].Sincelargecapacitancemakesitdifficulttolevelandconsumerpricewilln

5、otsatisfythefuturede-speedupachargetransferrate,thisapproachisnotcon-mand.Forexample,peoplewantaninexpensiveHRdigi-sideredeffective.Thehighcostforhighprecisionopticstalcamera/camcorderorseethepricegraduallyreduce,andimagesensorsisalsoanimportantconcerninmanyandscientistsoftenneedaveryHRle

6、velclosetothatofcommercialapplicationsregardingHRimaging.There-ananalog35mmfilmthathasnovisibleartifactswhenanfore,anewapproachtowardincreasingspatialresolutionimageismagnified.Thus,findingawaytoincreasetheisrequiredtoovercometheselimitationsofthesensorscurrentresolutionlevelisneeded.ando

7、pticsmanufacturingtechnology.ThemostdirectsolutiontoincreasespatialresolutionOnepromisingapproachistousesignalprocessingistoreducethepixelsize(i.e.,increasethenumberofpix-techniquestoobtainanHRimage(orsequence)fromelsperunitarea)bysensormanufacturingtechniques.Asobs