adding noise to image
2016-08-23
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unction [ noisy, noise ] = addnoise( signal, noise, snr )
% ADDNOISE Add noise to signal at a prescribed SNR level.
%
% [NOISY,NOISE]=ADDNOISE(SIGNAL,NOISE,SNR) adds NOISE to SIGNAL
% at a prescribed SNR level. Returns the mixture signal as well
% as scaled noise such that NOISY=SIGNAL+NOISE.
%
% Inputs
% SIGNAL is a target signal as vector.
%
% NOISE is a masker signal as vector, such that
% length(NOISE)>=length(SIGNAL). Note that
% in the case that length(NOISE)>length(SIGNAL),
%
% ADDNOISE Add noise to signal at a prescribed SNR level.
%
% [NOISY,NOISE]=ADDNOISE(SIGNAL,NOISE,SNR) adds NOISE to SIGNAL
% at a prescribed SNR level. Returns the mixture signal as well
% as scaled noise such that NOISY=SIGNAL+NOISE.
%
% Inputs
% SIGNAL is a target signal as vector.
%
% NOISE is a masker signal as vector, such that
% length(NOISE)>=length(SIGNAL). Note that
% in the case that length(NOISE)>length(SIGNAL),
%
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