Proble with imnoise function

Hi to all,

Does anyone some the "formula" that is used to add gaussian white noise to the image?

Thanks in advance,

J

Answer 1

[DGM]

Look in $MLROOT/toolbox/images/images/+images/+internal/algimnoise.m

or from the MIMT implementation (not yet published):

case 'gaussian'
    outpict=inpict + gaumean + sqrt(gauvar)*randn(s0);       

Where gaumean is the noise mean, gauvar is the noise variance, and s0 is the image size.