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ID:51143936
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页数:12页
时间:2020-03-19
《图像处理中值滤波器毕业论文中英文资料对照外文翻译文献综述.doc》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、图像处理中值滤波器中英文资料对照外文翻译文献综述一、英文原文ANEWCONTENTBASEDMEDIANFILTERGerasimosLouverdis,IoannisAndreadisandAntoniosGasteratosABSTRACTInthispaperthehardwareimplementationofacontentbasedmedianfiltersuitableforreal-timeimpulsenoisesuppressionispresented.Thefunctionoftheproposedci
2、rcuitryisadaptive;itdetectstheexistenceofimpulsenoiseinanimageneighborhoodandappliesthemedianfilteroperatoronlywhennecessary.Inthisway,theblurringoftheimageinprocessisavoidedandtheintegrityofedgeanddetailinformationispreserved.Theproposeddigitalhardwarestructureisca
3、pableofprocessinggray-scaleimagesof8-bitresolutionandisfullypipelined,whereasparallelprocessingisusedtominimizecomputationaltime.ThearchitecturepresentedwasimplementedinFPGAanditcanbeusedinindustrialimagingapplications,wherefastprocessingisoftheutrnostimportance.The
4、typicalsystemclockfrequencyis55MH乙1.INTRODUCTIONTwoapplicationsofgreatimportanceintheareaofimageprocessingarenoisefilteringandimageenhancementl,].Thesetasksareanessentialpartofanyimageprocessor.whetherthefinalimageisutilizedforvisualinterpretationorforautomaticanaly
5、sis.Theaimofnoisefilteringistoeliminatenoiseanditseffectsontheoriginalimage,whilecorruptingtheimageaslittleaspossible.Tothisend,nonlineartechniques(likethemedianand,ingeneral,orderstatisticsfilters)havebeenfoundtoprovidemoresatisfactoryresultsincomparisontolinearmet
6、hods.Impulsenoiseexistsinmanypradicalapplicationsandcanbegeneratedbyvarioussources,includinganumberofmanmadephenomena,suchasunprotectedswitches,industrialmachinesandcarignitionsystems.ImagesareoftencoiTuptedbyimpulsenoiseduetoanoisysensororchanneltransmissionerrors.
7、Themostcommonmethodusedforimpulsenoisesuppressionnfbrgray-scaleandcolorimagesisthemedianfilter(MF)[2].ThebasicdrawbackoftheapplicationoftheMFistheblurringoftheimageinprocess.Inthegeneralcase.thefilterisapplieduniformlyacrossanimage,modifyingpixelsthatarenotcontamina
8、tedbynoise.Inthisway,theeffectiveeliminationofimpulsenoiseisoftenattheexpenseofanoveralldegradationoftheimageandblurredordistortedfeatures
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