VIDEO PICTURE COMPRESSION ARTIFACTS REDUCTION VIA FILTERING AND DITHERING

摘要

A video apparatus is provided with the capability to dither one or more pixels across common block edges of adjacent pixel blocks of a picture where encoding/decoding are performed on a block based manner. In various embodiments, the adjacent pixel block may be coincident on macroblock boundaries, motion compensation block boundaries, transform block boundaries, or other block boundaries of the like. The dithering may be performed as part of the deblocking filtering operation or afterwards. The dithering values may be pre-computed and provided to the video apparatus or computed in real time.