Noises

Define Impulse noise. Whats the difference between speckle noise and gaussian noise

Answer 1

[Wayne King]

Speckle noise is a multiplicative noise, where the images is multiplied element by element by a matrix of uniformly distributed (not Gaussian) noise with 0 mean and some variance.

Gaussian noise (which has a different distribution than speckle noise) is usually used as additive noise, i.e. the noise matrix is added to the image matrix.

[Sivakumaran Chandrasekaran]

Thanks Wayne!!