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时间: 2020-1-16 13:46

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RobustSharpnessMetricKurtosisMeasurementAROBUSTIMAGESHARPNESSMETRICBASEDONKURTOSISMEASUREMENTOFWAVELETCOEFFICIENTSR.Ferzli,LinaJ.KaramDepartmentofElectricalEngineeringArizonaStateUniversityTempe,AZ85287-5706ABSTRACTInthispaper,arobustsharpnessmetricfornoisyimagesispresented.Theproposedmethod,relyingontheLipschitzregularitypropertiesseparatingthesignalsingularitiesfromthenoisesingularities,appliesthedyadicwavelettransformandthenmeasuresthekurtosisofthetwo-dimensionaldiscreteFouriertransformofthewaveletcoefcientsacrosslargescales.Incontrasttoothersharpnessmetrics,theproposedtechniquewillperformwellunderlowtomoderateSNRsincethenoisewillbereducedacrosswaveletscales.Simulationresultsrevealthattheproposedimagesharpnessmetr……

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