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US 10,757,436 B2Granted
Method for encoding and decoding images, and device using same
AssigneeLG Electronics Inc.
InventorsJae Hyun Lim, Seung Wook Park, Jung Sun Kim, Yong Joon Jeon, Joon Young Park, Byeong Moon Jeon
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Abstract
According to the present invention, an inter-prediction method includes: receiving mode information on the inter-prediction of a current block; decoding the received mode information; and performing inter-prediction using the decoded mode information. According to the present invention, image compression efficiency may be improved.
Claims9
A video encoding method performed by an encoding apparatus, comprising:
- determining an inter prediction mode of a current block as a merge mode;
- deriving merge candidates of the current block based on neighboring blocks of the current block;
- selecting a merge candidate from the derived merge candidates;
- determining a motion information of the current block as to be equal to a motion information of the selected merge candidate;
- deriving a prediction sample of the current block based on the motion information of the current block;
- generating residual information based on the prediction sample of the current block;
- generating mode information of the current block, wherein the mode information includes merge index information indicating the selected merge candidate and merge flag information indicating the inter prediction mode for the current block is the merge mode;
- and
- transmitting the mode information and the residual information,
- wherein the neighboring blocks includes a left neighboring block, an upper neighboring block, an upper-right corner neighboring block, an upper-left corner neighboring block, a lower-left corner neighboring block of the current block.
7 more elements
A video encoding apparatus comprising:
- a prediction module configured to determine an inter prediction mode of a current block as a merge mode, to derive merge candidates of the current block based on neighboring blocks of the current block, to select a merge candidate from the derived merge candidates, to determine a motion information of the current block as to be equal to a motion information of the selected merge candidate, and to derive a prediction sample of the current block based on the motion information of the current block;
- and
- an encoding module configured to generate residual information based on the prediction sample of the current block, to generate mode information of the current block, wherein the mode information includes merge index information indicating the selected merge candidate and merge flag information indicating the inter prediction mode for the current block is the merge mode, and to transmit the mode information and the residual information,
- wherein the neighboring blocks includes a left neighboring block, an upper neighboring block, an upper-right corner neighboring block, an upper-left corner neighboring block, a lower-left corner neighboring block of the current block.
1 more element
A non-transitory computer-readable storage medium storing video information comprising:
- residual information generated by determining an inter prediction mode of a current block as a merge mode, by deriving merge candidates of the current block based on neighboring blocks of the current block, by selecting a merge candidate from the derived merge candidates, by determining a motion information of the current block as to be equal to a motion information of the selected merge candidate, by deriving a prediction sample of the current block based on the motion information of the current block, by generating the residual information based on the prediction sample of the current block;
- and mode information including merge index information indicating the selected merge candidate and merge flag information indicating the inter prediction mode for the current block is the merge mode, wherein the neighboring blocks includes a left neighboring block, an upper neighboring block, an upper-right corner neighboring block, an upper-left corner neighboring block, a lower-left corner neighboring block of the current block.
Dependencies are inferred from the claim text.