... case of lossy coded video signals, but it is also important for the other types of video signals. For that purpose, many different filtering techniques and filters were developed. Averbuch et al. in =-=[1]-=- proposed usage of weighted sums of symmetrically aligned pixels for deblocking of block-transform compressed images. They define the basic weights, to maximize efficiency at lower bit-rates but also ...
... efficiency at lower bit-rates but also adapt them at higher bit-rates to avoid edge ghosting effect. The masking effect of the Human Visual System (HVS) is taken into consideration by Chen et al. in =-=[2]-=-. They use large processing window in a low-activity areas to ensure proper image smoothing where is no background masking ability, but in a high-activity areas the window is reduced and the greatest ...