IMAGE FILTER DEVICE, DECODING DEVICE, ENCODING DEVICE, AND DATA STRUCTURE

摘要

A loop filter (16) includes a filter processing unit (162c) configured to generate an output image by acting on an input image made up of a plurality of unit regions, and a reference region setting unit (162b) configured to reduce a reference region to be referenced by the filter processing unit (162c) for calculating a pixel value of each target pixel to a size according to a position of this target pixel in a unit region including this target pixel.