Image denoising: using vishushrink method
This function used to denoise a noisy image using vishushrink method
function [soft_X1,SOFT_PSNR
] = Vishu_soft
(X,Y
)
%function used to denoise a noisy image using vishuShrink method
%One -level decomposition
[CA,CH,CV,
CD] = dwt2
(Y,
'haar');
%Call the function to calculate the threshold
T1 = Visu_threshold
(CD);
% Call the function to perfom soft shrinkage
de_CH = soft
(CH,T1
);
de_CV = soft
(CV,T1
);
de_CD = soft
(CD,T1
);
%
%Two -level decomposition
[CA1,CH1,CV1,CD1
] = dwt2
(CA,
'haar');
%Call the function to calculate the threshold
T2 = Visu_threshold
(CD1
);
% Call the function to perfom soft shrinkage
de_CH1 = soft
(CH1,T2
);
de_CV1 = soft
(CV1,T2
);
de_CD1 = soft
(CD1,T2
);
% % CA1 = soft1(CA1,T2);
%
%
%Reconstruction for soft shrinkage
X2 = idwt2
(CA1,de_CH1,de_CV1,de_CD1,
'haar');
X1 = idwt2
(X2,de_CH,de_CV,de_CD,
'haar');
SOFT_PSNR = PSNR
(X,X1
);
soft_X1 =
uint8(X1
);
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posted by Senthilkumar R