Video encoding/decoding method and device using segmentation limitation for chroma block, and method for transmitting bitstream
AssigneeLG Electronics Inc.
InventorsJung Hak NAM, Hyeong Moon JANG, Nae Ri PARK
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Abstract
An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus includes determining whether predetermined splitting is allowed for a current block based on a size of the current block, obtaining information on splitting of the current block based on whether the predetermined splitting is allowed, splitting the current block based on the information on splitting of the current block, and decoding the current block. Whether the predetermined splitting is allowed may be determined based on whether a width or height of the current block is a predetermined sample length.
Claims9
An image decoding method performed by an image decoding apparatus, the image decoding method comprising:
- obtaining information on splitting of a current block from a bitstream;
- splitting the current block based on the information on splitting of the current block;
- decoding the current block;
- and
- wherein the information on splitting of the current block comprises at least one of a splitting direction or a splitting type,
- wherein, based on the current block being a chroma block, a tree structure of the current chroma block being a dual tree structure and a width of the current block being equal to 8, vertical ternary splitting is not allowed for the current block regardless of a height of block(s) being derived from the current block by the vertical ternary splitting.
An image encoding method performed by an image encoding apparatus, the image encoding method comprising:
- splitting a current block based on whether predetermined splitting is allowed for the current block;
- encoding information on splitting of the current block;
- and
- encoding the current block,
- wherein the information on splitting of the current block comprises at least one of a splitting direction or a splitting type,
- wherein, based on the current block being a chroma block, a tree structure of the current chroma block being a dual tree structure and a width of the current block being equal to 8, vertical ternary splitting is not allowed for the current block regardless of a height of block(s) being derived from the current block by the vertical ternary splitting.
A method of transmitting a bitstream comprising:
- transmitting a bitstream generated by an image encoding method;
- wherein the image encoding method comprises,
- splitting a current block based on whether predetermined splitting is allowed for the current block;
- encoding information on splitting of the current block into the bitstream;
- and
- encoding the current block into the bitstream,
- wherein the information on splitting of the current block comprises at least one of a splitting direction or a splitting type,
- wherein, based on the current block being a chroma block, a tree structure of the current chroma block being a dual tree structure and a width of the current block being equal to 8, vertical ternary splitting is not allowed for the current block regardless of a height of block(s) being derived from the current block by the vertical ternary splitting.
Dependencies are inferred from the claim text.