ADD_NOISE

[erlebach]

Hi,

In run_main, in the section "if ADD_NOISE:", the code states:
if ADD_NOISE:
x_PMLR = x_PMLR * np.random.randint(2, size=x_PMLR.shape)
x_PMLR += np.random.randint(2, size=x_PMLR.shape)

Line 1 creates pepper noise (since you are multiplying by 1 or 0). The second line adds 1 or 0 to each pixel. What is the rationale? Why not simply add a Gaussian or uniform noise of small amplitude to each pixel? Thanks.

[hwalsuklee]

Hi,

Two lines you mentioned is meant to add "strong" noise to image so that you can hardly recognize digits in input image with noise.

I just wanted to show strong denoising performance of VAE.

You are allowed to add any types of noise like gaussian or uniform.
There is no rationale.