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《Affine Motion Based CMOS Distortion Analysis and CMOS Digital Image Stabilization》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、W.-h.ChoandK.-S.Hong:AffineMotionBasedCMOSDistortionAnalysisandCMOSDigitalImageStabilization833AffineMotionBasedCMOSDistortionAnalysisandCMOSDigitalImageStabilizationWon-hoChoandKi-SangHongAbstract—TheCMOSimagedistortionisduetotheorobjectsinthescenearenotstationary,t
2、herollingshutterrollingshutterinCMOSimagesensors(CISs)anditcanbemechanismwillcauseCMOSdistortionsinCMOSimages.moreexaggeratedwhenaCIScameramovesrapidly.SeveralmethodshavebeenproposedtoremoveCMOSdistortionsmadebythetranslationalmotion.But,inthispaper,weproposetheaffin
3、emotionbasedCMOSdistortioncorrectionmethodcombinedwithdigitalimagestabilization.ToremoveCMOSdistortionsduetotheaffineglobalimagemotion,CMOSdistortionmodelisproposedtoexplaintheeffectoftheaffineglobalimagemotionontheCMOSdistortioninCISs.ToimproveCMOSvideo'svisuals,wep
4、roposeCMOSdigitalimagestabilizationtoremovethejitteringmotionsinthenewimagesequenceobtainedbyourcorrectionmethod.Inaddition,toreducethecomputationaltimeandtheoutliereffect,areliablefeatureselectionmethodisproposedtobeusedintheaffineglobalimagemotionestimation.Intheex
5、perimentresults,weshowthattheproposedCMOSdistortioncorrectionmethodismoregeneralthanpreviousones.Also,weshowthatourstabilizationmethodcanimproveFig.1.CMOSdistortionscausedbythreemovementsofaCISPC1webcam:(a)astandstill,(b),(c)therotationalmotions,(d)theupwardCMOSvideo
6、'svisualsrunninginreal-time.motion,(e)theright-directionalmotion.IndexTerms—CMOSImageSensor,AffineGlobalImageFig.1showsexamplesoffiveCMOSimagestakenbyaMotion,CMOSDistortionModel,RollingShutter,DigitalImageStabilization.CISPCwebcam.Fig.1(a)wascapturedwhenthecamerawass
7、tationaryandtheotherswerecapturedwhenitwasinmotion.Fig.1(b)and(c)showdistortedCMOSimagesduetotheI.INTRODUCTIONrotationalmotionsoftheCIScamerawhichmakeverticallinesofthesceneappearcurved.Fig.1(d)showstheCMOSRecently,theimagingdevicemarketofCMOSimagingdistortionduetoth
8、eupwardmotionwhichmakesthescenesensors(CISs)hasbeenremarkablyexpandingduetotheobjectsappearverticallysqueezedcomparedtoFig.1(a).Als
