Image Noise Noise Reduction in Siril Algorithms: Impulse Noise Algorithms: Additive White Gaussian Noise Algorithms: Poisson and Poisson-Gaussian Noise Modulation Noise Reduction Interface Comparison Limitations References Image Noise # Images suffer from various types of noise:
Impulse noise This type of noise (sometimes called “salt and pepper noise”) typically arises from hot or cold pixels. It is usually dealt with by using sigma rejection stacking, but sometimes you may need to deal with it if processing a single unstacked image.
This is a companion discussion topic for the original entry at https://siril.org/docs/doc/denoising/