FRAMELET BASED DECONVOLUTION

(整期优先)网络出版时间:2010-03-13
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Inthispaper,twoframeletbaseddeconvolutionalgorithmsareproposed.Thebasicideaofframeletbasedapproachistoconvertthedeconvolutionproblemtotheproblemofinpaintinginaframedomainbyconstructingaframeletsystemwithoneofthemasksbeingthegiven(discrete)convolutionkernelviatheunitaryextensionprincipleof[26],asintroducedin[6-9].Thefirstalgorithmunifiesourpreviousworksinhighresolutionimagereconstructionandinfra-redchoppedandnoddedimagerestoration,andthesecondoneisacombinationofourpreviousframe-baseddeconvolutionalgorithmandtheiterativethresholdingalgorithmgivenby[14,16].Thestrongconvergenceofthealgorithmsininfinitedimensionalsettingsisgivenbyemployingproximalforward-backwardsplitting(PFBS)method.Consequently,itunifiesiterativealgorithmsofinfiniteandfinitedimensionalsettingandsimplifiestheproofoftheconvergenceofthealgorithmsof[6].