Video-encoding method and video-encoding apparatus based on encoding units determined in accordance with a tree structure, and video-decoding method and video-decoding apparatus based on encoding units determined in accordance with a tree structure

摘要

Disclosed is a video-encoding method based on encoding units determined in accordance with a tree structure, wherein the video-encoding method involves: dividing an image of a video into one or more maximum encoding units; encoding, for each maximum encoding unit, the image on the basis of encoding units for each coded depth, which are divided hierarchically on the basis of coded depth, to determine encoding units of coded depths individually for each encoding unit for each coded depth; determining encoding units in accordance with a tree structure; and outputting data encoded on the basis of the encoding units determined in accordance with a tree structure, information on coded depths and encoding modes, and information on an encoding unit structure, which indicates encoding unit sizes and variable coded depths.