US 11,689,740 B2Granted

Motion vector prediction

AssigneeQUALCOMM Incorporated

InventorsYi-Wen Chen, Wei-Jung Chien, Yu-Chen Sun, Li Zhang, Sungwon Lee, Xiang Li, Hsiao-Chiang Chuang, Jianle Chen, Vadim Seregin, Marta Karczewicz

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Abstract

A video coder may determine a motion vector of a non-adjacent block of a current picture of the video data. The non-adjacent block is non-adjacent to a current block of the current picture. Furthermore, the video coder determines, based on the motion vector of the non-adjacent block, a motion vector predictor (MVP) for the current block. The video coder may determine a motion vector of the current block. The video coder may also determine a predictive block based on the motion vector of the current block.

Claims14

Dependent claims

A method of decoding comprising:

generating, by a video decoder, a first-in, first-out (FIFO) motion vector predictor (MVP) candidate list buffer, wherein generating the FIFO MVP candidate list buffer comprises:
determining, by the video decoder, motion information of a block of a current picture decoded before a current block of the current picture, wherein the motion information of the block includes a motion vector and a reference index;
and
updating, by the video decoder, the FIFO MVP candidate list buffer to remove an earlier-added MVP candidate from the FIFO MVP candidate list buffer and to add the motion information of the block as an MVP candidate to the FIFO MVP candidate list buffer;
determining, by the video decoder, from among MVP candidates in the FIFO MVP candidate list buffer, an MVP for the current block,
wherein the MVP candidates in the FIFO MVP candidate list buffer include motion information of at least one non-adjacent block of the current picture that is non-adjacent to the current block;
determining, by the video decoder, based on the MVP for the current block, a motion vector of the current block;
determining, by the video decoder, a predictive block based on the motion vector of the current block;
and
reconstructing, by the video decoder, based on the predictive block, sample values of the current block of the current picture.

7 more elements

A method of encoding comprising:

generating, by a video encoder, a first-in, first-out (FIFO) motion vector predictor (MVP) candidate list buffer, wherein generating the FIFO MVP candidate list buffer comprises:
determining, by the video encoder, motion information of a block of a current picture encoded before a current block of the current picture, wherein the motion information of the block includes a motion vector and a reference index;
and
updating, by the video encoder, the FIFO MVP candidate list buffer to remove an earlier-added MVP candidate from the FIFO MVP candidate list buffer and to add the motion information of the block as an MVP candidate to the FIFO MVP candidate list buffer;
determining, by the video encoder, from among the MVP candidates in the FIFO MVP candidate list buffer, an MVP for the current block,
wherein the MVP candidates in the FIFO MVP candidate list buffer include at least one non-adjacent block of the current picture that is non-adjacent to the current block;
determining, by the video encoder, based on the MVP for the current block, a motion vector for the current block;
determining, by the video encoder, a predictive block based on the motion vector of the current block;
and
generating, by the video encoder, based on the predictive block, residual sample values.

7 more elements

An apparatus for decoding, the apparatus comprising:

one or more storage media;
and
one or more processors implemented in circuitry, the one or more processors configured to:
generate a first-in, first-out (FIFO) motion vector predictor (MVP) candidate list buffer, wherein the one or more storage media are configured to store the FIFO MVP candidate list buffer and the one or more processors are configured, as part of generating the FIFO MVP candidate list buffer, to:
determine motion information of a block of a current picture decoded before a current block of the current picture, wherein the motion information of the block includes a motion vector and a reference index;
and
update the FIFO MVP candidate list buffer to remove an earlier-added MVP candidate from the FIFO MVP candidate list buffer and to add the motion information of the block as an MVP candidate to the FIFO MVP candidate list buffer;
determine, from among MVP candidates in the FIFO MVP candidate list buffer, an MVP for the current block,
wherein the MVP candidates in the FIFO MVP candidate list buffer include motion information of at least one non-adjacent block of the current picture that is non-adjacent to the current block;
determine, based on the MVP for the current block, a motion vector of the current block;
determine a predictive block based on the motion vector of the current block;
and
reconstruct, based on the predictive block, sample values of the current block of the current picture.

10 more elements

An apparatus for encoding, the apparatus comprising:

one or more storage media;
and
one or more processors implemented in circuitry, the one or more processors configured to:
generate a first-in, first-out (FIFO) motion vector predictor (MVP) candidate list buffer, wherein the one or more storage media are configured to store the FIFO MVP candidate list buffer and the one or more processors are configured, as part of generating the FIFO MVP candidate list buffer, to:
determine motion information of a block of a current picture encoded before a current block of the current picture, wherein the motion information of the block includes a motion vector and a reference index;
and
update the FIFO MVP candidate list buffer to remove an earlier-added MVP candidate from the FIFO MVP candidate list buffer and to add the motion information of the block as an MVP candidate to the FIFO MVP candidate list buffer;
determine from among the MVP candidates in the FIFO MVP candidate list buffer, an MVP for the current block,
wherein the MVP candidates in the FIFO MVP candidate list buffer include at least one non-adjacent block of the current picture that is non-adjacent to the current block;
determine, based on the MVP for the current block, a motion vector for the current block;
determine a predictive block based on the motion vector of the current block;
and
generate, based on the predictive block, residual sample values.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/454,456Filed 10 Nov 2021 · continuation
Priority: 13 Jun 2017
Published: US 2022/0070486 A13 Mar 2022
Granted: 27 Jun 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04N 19/52
By encoding: by predictive encoding
H04N 19/176
The unit being an image region, e.g. an object: the region being a block, e.g. a macroblock
H04N 19/44
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals: decoders specially adapted therefor, e.g. video…
H04N 19/54
Motion estimation other than block-based: using feature points or meshes

Family

Application62/519,007Us provisional application · filed 13 Jun 2017
Application16/003,269Parent of this continuation · filed 8 Jun 2018
Application16/819,955Parent of this continuation · filed 16 Mar 2020
US 10,602,180 B2Parent of this continuation · filed 24 Mar 2020
US 2022/0070486 A1Pre-grant publication · published 3 Mar 2022
US 11,218,723 B2Parent of this continuation
US 2018/0359483 A1Published application
US 2020/0221116 A1Published application
US 11,689,740 B2This patent

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