Texture Image Denoising by gradient histogram retained, which contains all of the source code and examples, is a very good image de-noising methods.

GHP
...\Data
...\....\1.tif
...\....\10.tif
...\....\2.tif
...\....\3.tif
...\....\4.tif
...\....\5.tif
...\....\6.tif
...\....\7.tif
...\....\8.tif
...\....\9.tif
...\....\trees.tif
...\HMIS_Main.m
...\README.txt
...\Results
...\.......\Thumbs.db
...\Utilities
...\.........\Add_noise.m
...\.........\Block_matching.m
...\.........\Cal_Parameters.m
...\.........\cal_ssim.m
...\.........\Centralized_SR_Denoising_IDR2.m
...\.........\csnr.m
...\.........\CSR_Shrinkage.m
...\.........\HistEst.m
...\.........\HistMatShrinkage.m
...\.........\IDR_Shrinkage.m
...\.........\Image_Denoising.m
...\.........\Image_Denoising_HMIS.m
...\.........\Lforward2.m
...\.........\Ltrans2.m
...\.........\optimize
...\.........\........\html
...\.........\........\....\testoptimize.html
...\.........\........\....\testoptimize.png
...\.........\........\....\testoptimize_01.png
...\.........\........\....\testoptimize_02.png
...\.........\........\....\testoptimize_03.png
...\.........\........\....\testoptimize_04.png
...\.........\........\....\testoptimize_eq13962.png
...\.........\........\....\testoptimize_eq38168.png
...\.........\........\license.txt
...\.........\........\optimize.m
...\.........\........\testoptimize.m
...\.........\PCA_functions
...\.........\.............\Cal_CPCA.m
...\.........\.............\Cal_PCA.m
...\.........\.............\Clustering_LPCA.m
...\.........\.............\Clustering_PCA.m
...\.........\.............\Clustering_PCA_New - Copy.m
...\.........\.............\Clustering_PCA_New2.asv
...\.........\.............\Clustering_PCA_New2.m
...\.........\.............\FWD_CPCA.m
...\.........\.............\FWD_LPCA.m
...\.........\.............\FWD_PCA.m
...\.........\.............\getpca.asv
...\.........\.............\getpca.m
...\.........\.............\getsvd.m
...\.........\.............\Get_PCA.m
...\.........\.............\Get_PCA2.m
...\.........\.............\INV_CPCA.m
...\.........\.............\INV_LPCA.m
...\.........\.............\INV_PCA.m
...\.........\.............\KMeans_PCA.asv
...\.........\.............\KMeans_PCA.m
...\.........\.............\Soft_LPCA.m
...\.........\Proc_cls_idx.m
...\.........\rwt
...\.........\...\compile.m
...\.........\...\Contents.m
...\.........\...\daubcqf.m
...\.........\...\denoise.m
...\.........\...\HardTh.m
...\.........\...\INSTALL
...\.........\...\IRDWT.asv
...\.........\...\IRDWT.m
...\.........\...\LICENSE
...\.........\...\makesig.m
...\.........\...\mdwt.c
...\.........\...\mdwt.dll
...\.........\...\mdwt.m
...\.........\...\mdwt_r.c
...\.........\...\midwt.c
...\.........\...\midwt.dll
...\.........\...\midwt.m
...\.........\...\midwt_r.c
...\.........\...\mirdwt.c
...\.........\...\mirdwt.dll
...\.........\...\mirdwt.m
...\.........\...\mirdwt_r.c
...\.........\...\mrdwt.c
...\.........\...\mrdwt.dll
...\.........\...\mrdwt.m
...\.........\...\mrdwt_r.c
...\.........\...\RDWT.m
...\.........\...\README
...\.........\...\setopt.m
...\.........\...\SoftTh.m
...\.........\Set_PCA_idx.m

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