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US 11,606,566 B2Granted
Method for processing image on basis of inter-prediction mode and apparatus therefor
AssigneeLG Electronics Inc.
InventorJaeho Lee
Life of this patent
Estimating the term…
Abstract
Disclosed are a method for decoding a video signal and an apparatus therefor. Specifically, a method for decoding an image based on an inter-prediction mode may include: configuring a merge candidate list by using motion information of a spatial candidate and a temporal candidate adjacent to a current block; parsing a first syntax element indicating a particular candidate applied to inter-prediction of the current block among a predefined number of candidates in the merge candidate list; deriving a refined candidate by adding a motion vector offset to a motion vector of a candidate indicated by the first syntax element; and generating a prediction block of the current block by using the motion information of the refined candidate.
Claims7
A method for decoding an image based on an inter-prediction mode by a device, the method comprising:
- determining whether a merge mode is applied to a current block among a plurality of inter prediction modes, wherein the plurality of inter prediction modes include the merge mode and a Motion Vector Prediction (MVP) mode;
- configuring, based on the determination that the merge mode is applied to the current block, a merge candidate list based on motion information of a spatial candidate and a temporal candidate for the current block in the merge mode;
- obtaining merge motion vector offset precision information related to whether a merge motion vector offset has a fractional pixel precision, wherein the merge motion vector offset precision information is obtained from a picture parameter set;
- determining a merge candidate used to derive a refined merge candidate based on the merge motion vector offset, wherein a merge candidate on 0th position of the merge candidate list is determined as the merge candidate used to derive the refined merge candidate based on the merge motion vector offset;
- deriving motion information of the refined merge candidate based on a sum of the merge motion vector offset and a motion vector of the determined merge candidate, and the merge motion vector offset precision information;
- and
- generating a prediction block of the current block based on the motion information of the refined merge candidate,
- wherein a merge candidate generated based on an average of a pair of predefined candidates is added in the merge candidate list after configuring the merge candidate list including the spatial candidate and the temporal candidate, and
- wherein the pair of predefined candidates is a pair of a candidate on the 0th position and a candidate on 1st position of the merge candidate list.
6 more elements
A method for encoding an image based on an inter-prediction mode, the method comprising:
- determining whether a merge mode is applied to a current block among a plurality of inter prediction modes, wherein the plurality of inter prediction modes include the merge mode and a Motion Vector Prediction (MVP) mode;
- configuring, based on the determination that the merge mode is applied to the current block, a merge candidate list based on motion information of a spatial candidate and a temporal candidate for the current block in the merge mode;
- determining a merge candidate used to derive a refined merge candidate based on a merge motion vector offset, wherein a merge candidate on 0th position of the merge candidate list is determined as the merge candidate used to derive the refined merge candidate based on the merge motion vector offset;
- deriving motion information of the refined merge candidate based on a sum of the merge motion vector offset and a motion vector of the determined merge candidate, and merge motion vector offset precision information;
- generating a prediction block of the current block based on the motion information of the refined merge candidate;
- and
- generating video information including the merge motion vector offset precision information related to whether the merge motion vector offset has a fractional pixel precision, wherein the merge motion vector offset precision information is included in a picture parameter set of the video information,
- wherein a merge candidate generated based on an average of a pair of predefined candidates is added in the merge candidate list after configuring the merge candidate list including the spatial candidate and the temporal candidate, and
- wherein the pair of predefined candidates is a pair of a candidate on the 0th position and a candidate on 1st position of the merge candidate list.
6 more elements
A non-transitory computer-readable medium storing video information generated by performing the steps of:
- determining whether a merge mode is applied to a current block among a plurality of inter prediction modes, wherein the plurality of inter prediction modes include the merge mode and a Motion Vector Prediction (MVP) mode;
- configuring, based on the determination that the merge mode is applied to the current block, a merge candidate list based on motion information of a spatial candidate and a temporal candidate for the current block in the merge mode;
- determining a merge candidate used to derive a refined merge candidate based on a merge motion vector offset, wherein a merge candidate on 0th position of the merge candidate list is determined as the merge candidate used to derive the refined merge candidate based on the merge motion vector offset;
- deriving motion information of the refined merge candidate based on a sum of the merge motion vector offset and a motion vector of the determined merge candidate, and merge motion vector offset precision information;
- generating a prediction block of the current block based on the motion information of the refined merge candidate;
- and
- generating the video information including the merge motion vector offset precision information related to whether the merge motion vector offset has a fractional pixel precision, wherein the merge motion vector offset precision information is included in a picture parameter set of the video information,
- wherein a merge candidate generated based on an average of a pair of predefined candidates is added in the merge candidate list after configuring the merge candidate list including the spatial candidate and the temporal candidate, and
- wherein the pair of predefined candidates is a pair of a candidate on the 0th position and a candidate on 1st position of the merge candidate list.
6 more elements
Dependencies are inferred from the claim text.