VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS, BASED ON HIERARCHICAL CODED BLOCK PATTERN INFORMATION

摘要

A method and apparatus for decoding video and a method and apparatus for encoding video are provided. The method for decoding video includes: receiving and parsing a bitstream of encoded video; extracting, from the bitstream, encoded image data of a current picture assigned to a maximum coding unit of the current picture, information regarding a coded depth of the maximum coding unit, information regarding an encoding mode, and coding unit pattern information indicating whether texture information of the maximum coding units has been encoded; and decoding the encoded image data for the maximum coding unit, based on the information regarding the coded depth of the maximum coding unit, the information regarding the encoding mode, and the coding unit pattern information.

主权项

1. An apparatus for decoding video, the apparatus comprising:
a receiver which receives a bitstream of encoded video; an obtainer which obtains, from the bitstream, encoded image data of a transformation unit included in a maximum coding unit of the current picture, information regarding a coded depth of the maximum coding unit, and hierarchical coding unit pattern information for at least one transformation depth, and determines, based on a first hierarchical coding unit pattern information regarding the transformation unit of a first transformation depth, whether second hierarchical coding unit pattern information regarding four transformation units of a second transformation depth split from the transformation unit of the first transformation depth has been encoded; and a decoder which decodes the encoded image data of the transformation unit, based on the obtained information regarding the coded depth of the maximum coding unit and the hierarchical coding unit pattern information, wherein the maximum coding unit comprises the transformation unit for performing transformation on the maximum coding unit, the transformation unit is hierarchically split according to the at least one transformation depth, and the second transformation depth is lower than the first transformation depth, and wherein the hierarchical coding unit pattern information is set for each of a luma component and a chroma component of the transformation unit.