Encoding method and device of video using data unit of hierarchical structure, and decoding method and device thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsSun-il LEE, Hae-kyung JUNG, Min-su CHEON
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Abstract
Provided are a method and a device for encoding a video by using a data unit of a hierarchical structure, and a method and a device for decoding the same. A video encoding device includes: a hierarchical encoder configured to encode a picture of a video based on a data unit of a hierarchical structure; and an entropy coder configured to determine a context model used for entropy coding of a symbol based on hierarchical information of a data unit to which the symbol of the encoded picture belongs, and to entropy encode the symbol using the determined context model.
Claims1
A video decoding method comprising:
- receiving a bitstream including a transformation unit split flag indicating whether a transformation unit is split, the transformation unit being included in a coding unit;
- determining a context model based on a size of the transformation unit;
- 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 a transformation unit of a current transformation depth, splitting the transformation unit of the current transformation depth into a plurality of transformation units of lower transformation depth;
- and
- when the transformation unit split flag indicates a non-split of a transformation unit of a current transformation depth, performing inverse-transformation on the transformation unit of the current transformation depth.
Dependencies are inferred from the claim text.