Image Noise

Noise in images

Noise is just another function that is combined with original function to get a new function. $$I(x,y) = I(x, y) + h(x, y)$$

Common Types of Noise

Salt and Pepper Noise:

Random occurrences of black and white pixels.

Impulse noise:

Random occurrences of white pixels.

Gaussian Noise

Variations in intensity drawn from a Gaussian normal distribution