公开(公告)号：US20210058641A1

公开(公告)日：2021-02-25

申请号：US17012658

申请日：2020-09-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/537 ,  H04N19/513 ,  H04N19/523 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56

Abstract: A picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of the motion vector of each of the P pixel units is 1/N of the pixel precision, the motion vector of each of the P pixel units is used to determine a corresponding reference pixel unit in a reference picture of a corresponding pixel unit; and performing interpolation filtering on a pixel of the corresponding reference pixel unit by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units.

公开(公告)号：US11831902B2

公开(公告)日：2023-11-28

申请号：US17556579

申请日：2021-12-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/537 ,  H04N19/513 ,  H04N19/523 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56

CPC classification number: H04N19/52 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/523 ,  H04N19/537 ,  H04N19/56

Abstract: A picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of the motion vector of each of the P pixel units is 1/N of the pixel precision, the motion vector of each of the P pixel units is used to determine a corresponding reference pixel unit in a reference picture of a corresponding pixel unit; and performing interpolation filtering on a pixel of the corresponding reference pixel unit by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units.

公开(公告)号：US11240529B2

公开(公告)日：2022-02-01

申请号：US17012658

申请日：2020-09-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/537 ,  H04N19/513 ,  H04N19/523 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56

Abstract: A picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of the motion vector of each of the P pixel units is 1/N of the pixel precision, the motion vector of each of the P pixel units is used to determine a corresponding reference pixel unit in a reference picture of a corresponding pixel unit; and performing interpolation filtering on a pixel of the corresponding reference pixel unit by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units.

公开(公告)号：US10771809B2

公开(公告)日：2020-09-08

申请号：US16734586

申请日：2020-01-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/56 ,  H04N19/176 ,  H04N19/537 ,  H04N19/523 ,  H04N19/513 ,  H04N19/159

Abstract: A picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of the motion vector of each of the P pixel units is 1/N of the pixel precision, the motion vector of each of the P pixel units is used to determine a corresponding reference pixel unit in a reference picture of a corresponding pixel unit; and performing interpolation filtering on a pixel of the corresponding reference pixel unit by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units.

公开(公告)号：US10560714B2

公开(公告)日：2020-02-11

申请号：US15855005

申请日：2017-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56

Abstract: A picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of the motion vector of each of the P pixel units is 1/N of the pixel precision, the motion vector of each of the P pixel units is used to determine a corresponding reference pixel unit in a reference picture of a corresponding pixel unit; and performing interpolation filtering on a pixel of the corresponding reference pixel unit by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units.