VIDEO ENCODING METHOD AND APPARATUS USING TRANSFORMATION UNIT OF VARIABLE TREE STRUCTURE, AND VIDEO DECODING METHOD AND APPARATUS

摘要

A video encoding method is provided, the method includes: encoding a current region of a video by performing a transformation on the current region by using transformation units in a variable tree-structure which are determined from among transformation units that are hierarchically split from a base transformation unit with respect to the current region and which are generated based on a maximum split level of a transformation unit; and outputting encoded data of the current region, information about an encoding mode, and transformation-unit hierarchical-structure information comprising maximum size information and minimum size information of the transformation unit with respect to the video.

主权项

1. A video decoding method comprising:
obtaining, from a bitstream, maximum split information for an intra mode and information about a prediction mode for a coding unit; when the information about the prediction mode indicates the intra mode, determining a maximum split level of a transformation unit based on the maximum split information for the intra mode, wherein the transformation unit is determined from the coding unit; when a current split level of a current transformation unit is less than the maximum split level, obtaining sub-split information about the current transformation unit from the bitstream; and when the sub-split information indicates a split of the current transformation unit, splitting the current transformation unit into transformation units of a next split level, wherein the next split level is greater than the current split level.