Method and apparatus for encoding video and method and apparatus for decoding video, based on hierarchical structure of coding unit

摘要

An apparatus and method for encoding video data and an apparatus and method for decoding video data are provided. The encoding method includes: splitting a current picture into at least one maximum coding unit; determining a coded depth to output an encoding result by encoding at least one split region of the at least one maximum coding unit according to operating mode of coding tool, respectively, based on a relationship among a depth of at least one coding unit of the at least one maximum coding unit, a coding tool, and an operating mode, wherein the at least one split region is generated by hierarchically splitting the at least one maximum coding unit according to depths; and outputting a bitstream including encoded video data of the coded depth, information regarding a coded depth of at least one maximum coding unit, information regarding an encoding mode, and information regarding the relationship.

主权项

1. A method of decoding video data, the method comprising:
receiving and parsing a bitstream comprising encoded video data; obtaining, from the bitstream, the encoded video data, split information of a coding unit, encoding information regarding the coding unit, and information regarding an operating mode of a coding tool determined according to a size of the coding unit in a maximum coding unit; determining the coding unit which is hierarchically split from the maximum coding unit based on the split information; and
decoding the coding unit in the maximum coding unit according to an operating mode of a coding tool, by using the encoding information regarding the coding unit, wherein the operating mode of the coding tool is determined corresponding to the size of the coding unit based on the information regarding an operating mode of a coding tool determined according to a size of the coding unit,wherein the image is split into a plurality of maximum coding units,the maximum coding unit is hierarchically split into one or more coding units of depths including at least one of a current depth and a lower depth according to the split information,when the split information indicates a split for the current depth, the coding unit of a current depth is split into four coding units of a lower depth, independently from neighboring coding units, andwhen the split information indicates a non-split for the lower depth, the coding unit of the lower depth is split into one or more prediction units.