Noise is just a function added to an images, we could remove the noise by subtracting the noise again
-> true but we don’t know the noise function so we can’t actually do the subtraction.
-can add weights to our moving average
-weight [1, 1, 1, 1, 1] / 5
Non-uniform weights
Σ [1, 4, 6, 4, 1]/16
To do the moving average computation the number of weight should be
-odd: makes it easier to have a middle pixel
