32 4 : EMD!"#$% 369 [3] ; AD$%EK, 1 M 4,1 $%+',23'! D * +!!," # $ % & Fourier0'!,VC!6,:(!)* [4] ё Ib, (2D EMD,Two dimensionalempiricalmodedecomposit

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1 32 4 doi: /j.issn ACTA METROLOGICA SINICA Vol.32, М 4 July,2011 EMD!"#$% (()*+,-.,/ ) :01"#$%1!' !78,29:; <=>!"#$%?@A ёbc,d1'!"#$%e EMD,458!F5 GH)$%;IJD3KL! IMFEM ;NJOJ! IMF$%PQR EST ёu=vwx,y@a! EMD <,VXZ,26![\ ]^45_`,abc@N *'N3 ё :;"#;;F5GH; :TB973 :A :10158(2011) Palm PrintImageDenoisingBasedon2DEMDandWaveletThresholding DAIGuiping (DepartmentofElectronic&InformationEngineering,SuzhouVocationalUniversity,Suzhou,Jiangsu215104,China) Abstract:Inordertosuppresthepalmprintimagenoiseefectivelyandextractthepalmprintfeaturesaccurately,a noveldenoisingmethodbasedon2demdandwaveletthresholdingwasproposedfirstly,thepreprocesedpalmprint imagecontainingnoisewasdecomposedintosomeimfsby2demd,andthenthefirstseveralimfswereprocesedby usingwaveletthresholdingdenoisingmethod;finaly,theimagewasreconstructedthroughaddingtheprocesedimfsand theresidualcomponentexperimentalresultsshowthattheproposedmethodhasagoodefectonsuppresingnoise Comparedtothewaveletthresholdingand2DEMDdenoising,themethodnotonlyhasadvantagesofmoresuficiently retainingedgeanddetailinformationwhiledenoising,butalsoachievessuperiorpsnr(peaksignalnoiseratio)ofthe reconstructedimage Keywords:Metrology;Palm printdenoising;twodimensionalempiricalmodedecomposition;intrinsicmode function;waveletthresholdingdenoising 1 "#!"#4504 5E!,:;?! [1] ёq-0:$% 4526,b 726" #$%45! ёib,"# Q-,,$%: S!]^*+',b]^*+ 4526!,a,'L0"#!S [2] ё!$%@a[1 Fourier0!A A ё!$ %\!!,ab26k4,$%!]^*+,$%!"#: ;$%"#: :(112152) :(1982-),,/,,[@0$% ёluaiping_0127@163com

$[\ ]^45_`,abc@N *'N3 ё :;"#;;F5GH; :TB973 :A :10158(2011)04036805 Palm PrintImageDenoisingBasedon2DEMDandWaveletThresholding DAIGuiping$

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