how to implement a MATLAB function to add Gaussian noise ?
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I need to implement a function in Matlab to add Gaussian noise to an image let's say cameraman.tif but without using imnoise
Thanks in advance
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Answers (3)
Rick Rosson
on 7 Apr 2012
function y = addWhiteNoise(x,snr)
%
% snr is the signal-to-noise ratio expressed in decibels
%
stdev = ...
z = stdev*randn(size(x));
y = x + z;
end
2 Comments
Rick Rosson
on 7 Apr 2012
Hi Mina,
What have you done so far? Please post your code.
Thanks!
Rick
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