公开(公告)号：US20220116647A1

公开(公告)日：2022-04-14

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

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：US20240187638A1

公开(公告)日：2024-06-06

申请号：US18494259

申请日：2023-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin LIN ,  Ruopu HUANG ,  Haitao YANG

IPC: H04N19/52 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/523 ,  H04N19/537 ,  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：US20200244986A1

公开(公告)日：2020-07-30

申请号：US16847444

申请日：2020-04-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Fan LIANG ,  Haitao YANG

IPC: H04N19/513 ,  H04N19/119 ,  H04N19/537

Abstract: A picture prediction method includes: determining two pixel samples in a current picture block, and determining a candidate motion information unit set corresponding to each of the two pixel samples; determining a merged motion information unit set i including two motion information units; and predicting a pixel value of the current picture block by using an atone motion model and the merged motion information unit set i.

公开(公告)号：US20180139468A1

公开(公告)日：2018-05-17

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 ,  H04N19/176 ,  H04N19/159 ,  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：US20170374379A1

公开(公告)日：2017-12-28

申请号：US15699515

申请日：2017-09-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Fan LIANG ,  Haitao YANG

IPC: H04N19/513 ,  H04N19/119

CPC classification number: H04N19/513 ,  H04N19/119 ,  H04N19/537

Abstract: A picture prediction method and a related device are disclosed. The picture prediction method includes: determining two pixel samples in a current picture block, and determining a candidate motion information unit set corresponding to each of the two pixel samples; determining a merged motion information unit set i including two motion information units; and predicting a pixel value of the current picture block by using an affine motion model and the merged motion information unit set i. Technical solutions provided by embodiments of the present disclosure help reduce computational complexity of picture prediction performed based on the affine motion model.

公开(公告)号：US20220353525A1

公开(公告)日：2022-11-03

申请号：US17858447

申请日：2022-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Haitao YANG

IPC: H04N19/52 ,  H04N19/139 ,  H04N19/513 ,  H04N19/176 ,  H04N19/105 ,  H04N19/124 ,  H04N19/157

Abstract: Image encoding and decoding methods, apparatuses and computer-readable media are described. An example image encoding method includes: determining N encoded units from adjacent encoded units of a to-be-encoded unit according to a first preset rule, where a motion prediction mode of the N encoded units is the same as that of the to-be-encoded unit; generating an nth motion vector group by using a first preset algorithm and based on a motion vector of an nth encoded unit; determining, from obtained N motion vector groups according to a second preset rule, one motion vector group as an optimal motion vector group; determining a prediction sample value of each sample unit in the to-be-encoded unit by using a second preset algorithm and based on the optimal motion vector group; and encoding a prediction residual of each sample unit and an index identifier of the optimal motion vector group, to obtain a bitstream corresponding to the to-be-encoded unit.

公开(公告)号：US20170347116A1

公开(公告)日：2017-11-30

申请号：US15678635

申请日：2017-08-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sixin LIN ,  Huanbang CHEN

IPC: H04N19/52 ,  H04N19/56 ,  H04N19/124

CPC classification number: H04N19/52 ,  H04N19/124 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/513 ,  H04N19/56

Abstract: Embodiments of the present application relate to a video image encoding method, a video image decoding method, an encoding device, and a decoding device. The method includes: determining a motion vector group of a current encoding block; determining prediction values of a first component set of a motion model initialization vector; determining values of the first component set according to the prediction values of the first component set; and encoding the values of the first component set, and transmitting encoded values of the first component set. According to the video image encoding method in the embodiments of the present application, a motion model initialization vector is determined according to a motion vector group; values of a motion model are determined according to the motion model initialization vector. In this way, a volume of data and a quantity of occupied bits in encoding and decoding transmission can be reduced.

公开(公告)号：US20170188041A1

公开(公告)日：2017-06-29

申请号：US15461274

申请日：2017-03-16

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Li LI ,  Houqiang LI ,  Zhuoyi LV ,  Sixin LIN

IPC: H04N19/513 ,  H04N19/593

Abstract: A picture prediction method and a related apparatus are disclosed. The picture prediction method includes: determining motion vector predictors of K pixel samples in a current picture block, where K is an integer greater than 1, the K pixel samples include a first vertex angle pixel sample in the current picture block, a motion vector predictor of the first vertex angle pixel sample is obtained based on a motion vector of a preset first spatially adjacent picture block of the current picture block, and the first spatially adjacent picture block is spatially adjacent to the first vertex angle pixel sample; and performing, based on a non-translational motion model and the motion vector predictors of the K pixel samples, pixel value prediction on the current picture block. Solutions in the embodiments of the present application are helpful in reducing calculation complexity of picture prediction based on a non-translational motion model.

公开(公告)号：US20140016704A1

公开(公告)日：2014-01-16

申请号：US14020953

申请日：2013-09-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin LIN ,  MINGYUAN YANG

IPC: H04N7/36

CPC classification number: H04N19/513 ,  H04N19/51 ,  H04N19/517 ,  H04N19/523 ,  H04N19/56 ,  H04N19/567

Abstract: Embodiments of the present invention provide an encoding method, a decoding method, an encoding apparatus, a decoding apparatus, for a video image. The encoding method includes: determining an optimal integrated candidate block for a current block based on a motion vector integration technology; determining, based a prediction direction of the optimal integrated candidate block, a motion vector derivation mode that needs to be used by a decoder; correcting a motion vector of the current block based on the motion vector derivation mode; and determining a residual between a predicted value and an original value of the current block based on the corrected motion vector, thereby encoding the current block. According to the technical solutions, a more accurate predicted value is obtained by correcting the motion vector, and a smaller residual is generated, thereby improving encoding efficiency, avoiding an increase in data bandwidth, improving decoding quality, and reducing calculation complexity.

Abstract translation: 本发明的实施例提供了一种用于视频图像的编码方法，解码方法，编码装置，解码装置。 编码方法包括：基于运动矢量积分技术确定当前块的最佳综合候选块; 基于最佳综合候选块的预测方向确定需要由解码器使用的运动矢量导出模式; 基于运动矢量导出模式来校正当前块的运动矢量; 以及基于所校正的运动矢量来确定所述当前块的预测值和原始值之间的残差，从而对当前块进行编码。 根据技术方案，通过校正运动矢量获得更准确的预测值，生成较小的残差，从而提高编码效率，避免数据带宽增加，提高解码质量，降低计算复杂度。

公开(公告)号：US20130315309A1

公开(公告)日：2013-11-28

申请号：US13947681

申请日：2013-07-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sixin LIN ,  Mingyuan YANG ,  Jiantong ZHOU ,  Haoping YU

IPC: H04N7/36

CPC classification number: H04N19/533 ,  H04N19/52 ,  H04N19/523 ,  H04N19/56

Abstract: Embodiments of the present invention provide a motion prediction or compensation method during a video coding and decoding process. A motion prediction or compensation method provided in the embodiments of the present invention includes: acquiring a candidate motion vector set; conducting a refined search for an optimal motion vector based on information of the candidate motion vector set; and performing motion prediction or compensation by using the motion vector acquired by the refined search. This improves coding performance and meanwhile maintains reasonable complexity.

Abstract translation: 本发明的实施例在视频编码和解码过程中提供运动预测或补偿方法。 本发明实施例提供的运动预测或补偿方法包括：获取候选运动矢量集; 基于候选运动矢量集的信息进行精确搜索最优运动矢量; 以及通过使用由精细搜索获得的运动矢量来执行运动预测或补偿。 这提高了编码性能，同时保持了合理的复杂性。