Patent ID: 8953682
Filing Date: 2015-02-10
Classification: H04N,Y02T

Abstract:
1. An apparatus for decoding a video, the apparatus comprising: a receiver which receives a bitstream of an encoded video; an extractor which extracts, from the bitstream, information about a maximum size of a coding unit, which is a data unit in which an image is decoded, and split information indicating whether a coding unit of the image is split into coding units of a lower; a determiner which determines, based on the extracted split information, whether the coding unit is split into the coding units of the lower depth and determines coding units of a hierarchical structure split from a maximum coding unit; and a decoder which decodes the image based on the determined coding units of the hierarchical structure, wherein: the image is split into a plurality of maximum coding units, including the maximum coding unit, according to the extracted information about the maximum size of the coding unit, the maximum coding unit is hierarchically split into the coding units according to depths according to the split information, a coding unit of a current depth is one of rectangular data units split from a coding unit of an upper depth, when the split information indicates a split for the current depth, the coding unit of the current depth is split into the coding units of the lower depth, independently from neighboring coding units, and when the split information indicates a non-split of the lower depth, at least one prediction unit is obtained from a coding unit of the lower depth.