How to create add gaussian noise on an image

Question

I want to create a function to add gaussian noise to a single input that I will later use. I'm using the imageio module in Python.

def gaussian_noise(x, var):

Answer 1

I thought x is the tensor you want to add gaussian noise to, and var is the variance of gaussian noise.

Your question is vague, but you can add gaussian noise like this:

import torch

def gaussian_noise(x, var):
  return torch.normal(0, var, size=x.shape)

T = torch.ones(4, 5)
T += gaussian_noise(T, 0.1)
print(T)