ImageDenoisingAlgorithmBasedonReactionDiffusionandNonlocalSelf-similarity

doi:10.3969/j.issn.1006-2475.2018.06.011

Abstract

Abstract: Inordertomakebetteruseofimagepriorandtoprotecttheedges,textureoftheimage,animprovedalgorithmwhichcombinestrainednonlinearreactiondiffusion(TNRD)withpatchgrouppriorbaseddenoising(PGPD)isproposed.Firstofall,threeorthogonalsubbandsareobtainedbywaveletdecompositionofthePGPDdenoisedimage.Thetheoreticalanalysisshowsthattheimageisthesumofthesubbands.Thendiffusingthesubbandwithhighfrequencycoefficientsofwhichthewaveletcoefficientsaregreaterthanthethresholdbynonlinearreactiondiffusion,andtheresultsareusedtoreplacetheoriginalsubbandtogetthefinaldenoisingimage.Theexperimentalresultsshowthattheimprovedalgorithmhasgreaterperformanceimprovement,suchasthePeakSignaltoNoiseRatio(PSNR),thedetailsprotection.

Key words: imagedenoising, reactiondiffusion, patchgrouppriorbaseddenoising, waveletdecomposition

CLC Number:

TN911.73

MOPei-ji1,2，LEIHong1. ImageDenoisingAlgorithmBasedonReactionDiffusionandNonlocalSelf-similarity[J]. Computer and Modernization, doi: 10.3969/j.issn.1006-2475.2018.06.011.

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