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Generating training sequences of noises and finding kurtosis and skewness of them
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Hi everyone,
I am trying to generate training sequences of different noises but I am not confirmed that whether am doing it in a correct way or not.
Here is the code snippet for generating them,
%% for uniform image
% image = uint8(ones([512,512])*128);
A = -30;
B = 30;
matrix_uniform = uint8(A + (B-A)*rand(size(image)));
%for gaussian image
Mean_added = 0;
Variance_added=400;
a = ones(512)*128;
matrix_gaussian = uint8(a + Mean_added+sqrt(Variance_added).*randn(size(a)));
%% for impulse noise
image = ones(512)*128;
matrix_impulse = imnoise(uint8(image),'salt & pepper',.4);
%% for speckle noise
image = ones(512)*128;
matrix_speckle = imnoise(uint8(image),'speckle',.1);
Am I doing it in correct way.
Also how to find their kurtosis and skewness using Matlab, actually I want to get reference kurtosis and skewness to compare with the skewness and kurtosis of noise extracted from the image to check the performance of algorithm.
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Image Analyst
le 5 Mar 2014
See my image moments demo, where I compute skewness and kurtosis.
(I know this is old, but perhaps someone else will like the demo.)
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