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US 11,539,972 B2Granted
Method and apparatus for encoding/decoding image
AssigneeIndustry Academy Cooperation Foundation of Sejong University
InventorsJoo Hee Moon, Dong Jae Won, Jae Min Ha, Sung Won Lim
Life of this patent
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Abstract
A method and an apparatus for encoding/decoding an image according to the present invention may determine a reference area that is a pre-reconstructed area spatially adjacent to a current block on the basis of reference information for specifying the position of a reference area used for predicting a current block and may predict the current block on the basis of the reference area.
Claims3
A method for decoding video data, the method comprising:
- decoding reference information of a current block from a bitstream, the reference information indicating a position of a reference region used to predict the current block, the reference region being a pre-reconstructed region spatially adjacent to the current block;
- determining, based on the reference information, the reference region for the current block among a plurality of candidate regions pre-defined in a decoding apparatus;
- and
- predicting the current block based on the reference region,
- wherein the plurality of candidate regions includes a first candidate region including a top neighboring region to the current block and a top-right neighboring region to the current block, a second candidate region including a left neighboring region to the current block and a bottom-left neighboring region to the current block, and a third candidate region including the top neighboring region to the current block and the left neighboring region to the current block,
- wherein the decoded reference information equal to a first value indicates the first candidate region is used as the reference region for the current block,
- wherein the decoded reference information equal to a second value indicates that the second candidate region is used as the reference region for the current block,
- wherein the decoded reference information equal to a third value indicates that the third candidate region is used as the reference region for the current block, and
- wherein the current block is predicted using only some pixels, not all of pixels in the reference region.
6 more elements
A method for encoding video data, the method comprising:
- determining a reference region for the current block, the reference region being a pre-reconstructed region spatially adjacent to the current block;
- and
- encoding reference information of the current block into a bitstream, the reference information indicating a position of the reference region used to predict the current block,
- wherein the reference region is representative of one of a plurality of candidate regions pre-defined in an encoding apparatus,
- wherein the plurality of candidate regions includes a first candidate region including a top neighboring region to the current block and a top-right neighboring region to the current block, a second candidate region including a left neighboring region to the current block and a bottom-left neighboring region to the current block, and a third candidate region including the top neighboring region to the current block and the left neighboring region to the current block,
- wherein in response to the determination that the first candidate region is the reference region for the current block, the reference information equal to a first value is encoded into the bitstream,
- wherein in response to the determination that the second candidate region is the reference region for the current block, the reference information equal to a second value is encoded into the bitstream,
- wherein in response to the determination that the third candidate region is the reference region for the current block, the reference information equal to a third value is encoded into the bitstream, and
- wherein the current block is predicted using only some pixels, not all of pixels in the reference region.
6 more elements
A non-transitory computer readable medium for storing data associated with a video signal, comprising:
- a data stream stored in the non-transitory computer-readable medium, the data stream comprising reference information indicating a position of a reference region used to predict a current block,
- wherein the reference region is a pre-reconstructed region spatially adjacent to the current block,
- wherein the reference information is used to determine the reference region for the current block among a plurality of pre-defined candidate regions,
- wherein the plurality of pre-defined candidate regions includes a first candidate region including a top neighboring region to the current block and a top-right neighboring region to the current block, a second candidate region including a left neighboring region to the current block and a bottom-left neighboring region to the current block, and a third candidate region including the top neighboring region to the current block and the left neighboring region to the current block,
- wherein the reference information equal to a first value indicates the first candidate region is used as the reference region for the current block,
- wherein the reference information equal to a second value indicates that the second candidate region is used as the reference region for the current block,
- wherein the reference information equal to a third value indicates that the third candidate region is used as the reference region for the current block, and
- wherein the current block is predicted using only some pixels, not all of pixels in the reference region.
5 more elements
Dependencies are inferred from the claim text.