US 11,109,057 B2 · Overlapped block motion compensation based on blended predictors

Abstract

Exemplary video processing methods and apparatuses for coding a current block by overlapped sub-block motion compensation split the current block into overlapped sub-blocks, determine a sub-block MV for each overlapped sub-block, derive an initial predictor for each sub-block by motion compensation using the sub-block MV, derive a final predictor for each overlapped region by blending the initial predictors of the overlapped region, and encode or decode the current block based on the final predictors. Exemplary video processing methods and apparatuses for coding blocks with OBMC generate a converted MV by changing a MV to an integer MV or changing a MV component to an integer component, derive an OBMC region by motion compensation using the converted MVs, and encode or decode the blocks by blending an OBMC predictor with an original predictor.

Claims26

Dependent claims

A video processing method for processing blocks with Overlapped Block Motion Compensation (OBMC) in a video coding system, comprising:

receiving input video data associated with a current block in a current picture;
determining one or more Motion Vectors (MVs) for generating an OBMC region;
generating one or more converted MVs by changing said one or more MVs to one or more integer MVs or changing a MV component of said one or more MVs to an integer component;
deriving the OBMC region by motion compensation using said one or more converted MVs;
applying OBMC by blending an OBMC predictor in the OBMC region with an original predictor;
and
encoding or decoding the current block.

4 more elements

A video processing method for processing blocks with Overlapped Block Motion Compensation (OBMC) in a video coding system, comprising:

receiving input video data associated with a current block in a current picture;
determining a number of OBMC blending lines for a left boundary of the current block according to a width of the current block, or determining a number of OBMC blending lines for a top boundary of the current block according to a height of the current block;
deriving an original predictor of the current block by motion compensation using one or more MVs of the current block;
deriving an OBMC predictor of a left OBMC region having the number of OBMC blending lines for the left boundary by motion compensation using one or more MVs of a left neighboring block of the current block, or deriving an OBMC predictor of a top OBMC region having the number of OBMC blending lines for the top boundary by motion compensation using one or more MVs of a top neighboring block of the current block;
applying OBMC to the current block by blending the OBMC predictor with the original predictor of the current block for the number of OBMC blending lines;
and
encoding or decoding the current block.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/047,443Filed 15 Apr 2019 · us provisional application

Priority

16 Apr 2018

Published

US 2021/0076061 A111 Mar 2021

Granted

31 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04N 19/52
By encoding: by predictive encoding
H04N 19/105
Selection of coding mode or of prediction mode: selection of the reference unit for prediction within a chosen coding or prediction mode, e.g.…
H04N 19/137
Incoming video signal characteristics or properties: motion inside a coding unit, e.g. average field, frame or block difference
H04N 19/159
Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter:…

Family

Application62/657,995Us provisional application · filed 16 Apr 2018

Application62/750,279Us provisional application · filed 25 Oct 2018

Application62/751,755Us provisional application · filed 29 Oct 2018

US 2021/0076061 A1Pre-grant publication · published 11 Mar 2021

US 11,109,057 B2This patent

From the US filing history. Foreign family members aren’t listed.

Overlapped block motion compensation based on blended predictors

Life of this patent

Overlapped block motion compensation based on blended predictors

Life of this patent

Abstract

Claims26