模糊图像的盲反卷积复原算法-外文翻译

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1、RestorationofBlurredImagesUsingBlindDeconvolutionAlgorithmMs.S.RamyaKalasalingamUniversity,AnandNagar,KrishnankoilMs.T.MercyChristialKalasalingamUniversity,AnandNagar,KrishnankoilAbstract:Imagerestorationistheprocessofrecoveringtheoriginalimagefromthe

2、degradedimage.Aspireoftheprojectistorestoretheblurred/degradedimagesusingBlindDeconvolutionalgorithm.ThefundamentaltaskofImagedeblurringistode-convolutethedegradedimagewiththePSFthatexactlydescribethedistortion.Firstly,theoriginalimageisdegradedusingt

3、heDegradationModel.ItcanbedonebyGaussianfilterwhichisalow-passfilterusedtobluranimage.Intheedgesoftheblurredimage,theringingeffectcanbedetectedusingCannyEdgeDetectionmethodandthenitcanberemovedbeforerestorationprocess.BlindDeconvolutionalgorithmisappl

4、iedtotheblurredimage.Itispossibletorenovatetheoriginalimagewithouthavingspecificknowledgeofdegradationfilter,additivenoiseandPSF.Togettheeffectiveresults[1],thePenalizedMaximumLikelihood(PML)EstimationTechniqueisusedwithourproposedBlindDeconvolutionAl

5、gorithm.Keywords：BlindDeconvolutionAlgorithm;CannyEdgeDetection;DegradationModel;Imagerestoration;PML;PSF1IntroductionImagedeblurringisaninverseproblemwhichwhoseaspireistorecoveranimagewhichhassufferedfromlineardegradation.Theblurringdegradationcanbes

6、paceinvariantorspace-invariant.Imagedeblurringmethodscanbedividedintotwoclasses:nonblind,inwhichtheblurringoperatorisknown.Andblind,inwhichtheblurringoperatorisunknown[2].Blurringisaformofbandwidthreductionoftheimageduetoimperfectimageformationprocess

7、.Itcanbecausedbyrelativemotionbetweencameraandoriginalimage.Normally,animagecanbedegradedusinglow-passfiltersanditsnoise.This18low-passfilterisusedtoblur/smooththeimageusingcertainfunctions.Imagerestorationistoimprovethequalityofthedegradedimage.Itisu

8、sedtorecoveranimagefromdistortionstoitsoriginalimage.Itisanobjectiveprocesswhichremovestheeffectsofsensingenvironment.Itistheprocessofrecoveringtheoriginalsceneimagefromadegradedorobservedimageusingknowledgeaboutitsnature.Therearetwobroadcateg