How to add AWGN white noise in a 2d vector
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Taimoor
el 12 de Oct. de 2013
Editada: Sean de Wolski
el 14 de Oct. de 2013
mixed_ocr is a vector of 350x250. im receiving an error with the following code..please help
CODE :
clc
A1 = load('mixed_ocr.mat');
mixd_ocr = (A1.mixed_ocr);
y = awgn(mixd_ocr,10,'measured');
ERROR:
??? Error using ==> plus
Integers can only be combined with integers of the same class, or scalar doubles.
Error in ==> awgn at 272
y = sig+wgn(size(sig,1), size(sig,2), noisePower, 1, state, pMode, opType);
Error in ==> PARTA_Q3 at 4
y = awgn(mixd_ocr,10,'measured');
1 comentario
Nishitha Ayyalapu
el 14 de Oct. de 2013
It works fine with the data I worked on:
A = rand(350,250);
y = awgn(A,10,'measured');
The problem might be in the .mat you loaded. More information on your 350x250 you loaded would help to resolve the error.
Respuesta aceptada
Wayne King
el 14 de Oct. de 2013
Editada: Wayne King
el 14 de Oct. de 2013
I think you should try casting the mixd_ocr matrix to double.
mixd_ocr = double(mixd_ocr);
If you execute
class(mixd_ocr) % before you cast to double
You'll probably see the issue. For example:
X = randn(350,250);
X = int8(X);
y = awgn(X,10,'measured');
gives the same error you are seeing.
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