Patent ID: 9313507
Filing Date: 2016-04-12
CPC Classification: H04N

Claim Text:
1. A video decoding method comprising: receiving a bitstream including a transformation unit split flag indicating whether a transformation unit of a current transformation depth is split, the transformation unit being included in a coding unit; determining a context model based on a size of the transformation unit of the current transformation depth; obtaining the transformation unit split flag by entropy decoding the bitstream based on the determined context model; when the transformation unit split flag indicates a split of the transformation unit of the current transformation depth, splitting the transformation unit of the current transformation depth into four rectangular transformation units of a lower transformation depth; and when the transformation unit split flag indicates a non-split of the transformation unit of the current transformation depth, performing inverse-transformation on the transformation unit of the current transformation depth, wherein the context model includes information to determine a most probable symbol (MPS), and wherein: