Add gaussian and poisson noise options to projection applications #860
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axel-grc
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lesaintjerome
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I did a few tests. It seems to run fine.
The noise feature in rtkdrawgeometricphantom and rtkprojectshepplogan has not been removed. Should it be?
| section "Gaussian noise" | ||
| option "gaussian" - "Gaussian noise parameters: <mean> Noise level and <std> Noise standard deviation" double multiple no | ||
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| section "Poisson noise" | ||
| option "poisson" - "Poisson noise parameters: <I0> Number of impinging photons per pixel and <muref> reference linear attenuation coefficient" double multiple no |
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This seems to make the mu_ref parameter mandatory. Why not. Though we could mention something like "e.g. set 0.01879, which is the attenuation coefficient of water at 75 keV".
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Same could be said about the mean parameter for gaussian noise. Default=0. would make sense, to me.
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The problem is that we can't use different default values for lists with gengetopt, so the same default value will be used for mean and std for example.
We can maybe add theses default values to the implementation part ?
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Or have slightly more complex Gaussian and Poisson ggo sections, with 2 parameters each?
axel-grc
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