模糊图像的盲反卷积复原算法-毕业论文外文翻译

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

2、mage.Aspireoftheprojectistorestoretheblurred/degradedimagesusingBlindDeconvolutionalgorithm.ThefundamentaltaskofImagedeblurringistode-convolutethedegradedimagewiththePSFthatexactlydescribethedistortion.Firstly,theoriginalimageisdegradedusingtheDegradationModel

3、.ItcanbedonebyGaussianfilterwhichisalow-passfilterusedtobluranimage.Intheedgesoftheblurredimage,theringingeffectcanbedetectedusingCannyEdgeDetectionmethodandthenitcanberemovedbeforerestorationprocess.BlindDeconvolutionalgorithmisappliedtotheblurredimage.Itispo

4、ssibletorenovatetheoriginalimagewithouthavingspecificknowledgeofdegradationfilter,additivenoiseandPSF.Togettheeffectiveresults[1],thePenalizedMaximumLikelihood(PML)EstimationTechniqueisusedwithourproposedBlindDeconvolutionAlgorithm.Keywords：BlindDeconvolutionA

5、lgorithm;CannyEdgeDetection;DegradationModel;Imagerestoration;PML;PSF1IntroductionImagedeblurringisaninverseproblemwhichwhoseaspireistorecoveranimagewhichhassufferedfromlineardegradation.Theblurringdegradationcanbespaceinvariantorspace-invariant.Imagedeblurrin

6、gmethodscanbedividedintotwoclasses:nonblind,inwhichtheblurringoperatorisknown.Andblind,inwhichtheblurringoperatorisunknown[2].Blurringisaformofbandwidthreductionoftheimageduetoimperfectimageformationprocess.Itcanbecausedbyrelativemotionbetweencameraandoriginal

7、image.Normally,animagecanbedegradedusinglow-passfiltersanditsnoise.This18low-passfilterisusedtoblur/smooththeimageusingcertainfunctions.Imagerestorationistoimprovethequalityofthedegradedimage.Itisusedtorecoveranimagefromdistortionstoitsoriginalimage.Itisanobje

8、ctiveprocesswhichremovestheeffectsofsensingenvironment.Itistheprocessofrecoveringtheoriginalsceneimagefromadegradedorobservedimageusingknowledgeaboutitsnature.Therearetwobroadcateg