Image processing apparatus

摘要

An image processing apparatus comprises a flat domain decision unit (129) that causes a segmentation unit (102) to divide the decoded picture signal (132) from a decoder (101) into a plurality of small regions (blocks) and then causes a picture quality decision unit (103) to decides whether or not the regions are flat domains region by region, an AC component prediction unit (104) that predicts the AC component from the decoded picture signal (132), and a switch that outputs the AC component signal (133) predicted by the AC component prediction unit (104) for the blocks determined by the flat domain decision unit (129) to be flat domains and also outputs the decoded picture signal (132) as it is for the remaining blocks.