Artifacts of an incident digital image including pixels carrying
information are reduced by determining, for certain pixels being
considered from the image, displaced pixels. A displaced pixel associated
with a pixel being considered is situated at a location that is displaced
with respect to the location of the pixel being considered. Substitution
information is determined by taking into account the variations between
each piece of information carried by pixels situated at locations
adjacent to the pixel being considered. The pixel being considered is
then selectively replaced by a substitution pixel equal to the displaced
pixel or to a combination of the displaced pixel and the pixel being
considered, depending on the value of the substitution information.