“…Because of this, the noise removal procedure is one of the most commonly used pre-processing step in solving digital image processing tasks. Therefore, a significant part of digital image procedures are dedicated to image denoising, most of them being developed under the assumptions that the images are corrupted by additive white noise [1], [2], [3], [4]. In our work, we keep the assumption about normality, but we consider that the superimposed noise affects neighbour image pixels in a correlated manner.…”