FIELD: physics.
SUBSTANCE: proposed is a method for simulating film grain in an input image unit, in which the film grain is simulated in the output image (19) using pre-positioned units of film grain (408) from a pool of pre-positioned units. Subsequent film grain units are selected through comparison of the average brightness of the unit from the pool with the average brightness of the next one from a set of M×N pixels in the received image. When all subsequent pixel units of the image are compared with the selected film grain units, the selected film grain units are superimposed on a bigger image, corresponding to the received image.
EFFECT: simpler decoding unit and increased efficiency of simulating film grain in the input image unit.
13 cl, 6 dwg
