Nippon Steel has devised a filter for removing distortionsgenerated by digital image compression of block bases such as in MPMGvideos. Since conventional deblocking filters use low-pass filters,they have the disadvantage of removing not only block distortions butalso high-pass components included in the original im- gae. Thefilter proposed is capable of removing the block distortions bymaking use of human visual sense characteristics, while conservingexisting high-pass compo- nents to the maximum extent possible.
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