Additive Noise Filter

The Additive Noise filter lets you artificially add noise to an image. Deliberately corrupting an image with noise can let you test the resistance of an image processing operator to noise and assess the performance of various noise reduction filters and denoising models.

The result of adding noise to a grayscale image is show below on an intensity profile.

Intensity profile

The following options are available for the Additive noise filter in the Image Processing panel.

Options for additive noise

Distribution… Lets you choose a distribution for the added noise — Uniform absolute, Uniform relative, and Gaussian.

Range… Lets you choose the range of data within which noise will be added. For example, at a range of 100 with a Uniform relative distribution, noise will be added within ±50 of the original data.