Image denoising exploiting inter-and intra-scale dependency in complex wavelet domain-中国Betway体育网页登陆

摘要 Anewlocallyadaptiveimagedenoisingmethod,whichexploitstheintrarscaleandinter-scaledependencyinthedual-treecomplexwaveletdomain,ispresented.Firstly,arecentlyemergedbivariateshrinkageruleisextendedtoacomplexcoefficientanditsneighborhood,thecorrespondingnonlinearthresholdfunctionsarederivedfromthemodelsusingBayesianestimationtheory.Secondly,anadaptiveweight,whichisabletocapturetheinter-scaledependencyofthecomplexwaveletcoefficients,iscombinedtotheobtainedbishrinkthreshold.Theexperimentalresultsdemonstrateanimproveddenoisingperformanceoverrelatedearliertechniquesbothinpeaksignal-to-noiseratio(PSNR)andvisualeffect.

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Image denoising exploiting inter-and intra-scale dependency in complex wavelet domain

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