公开(公告)号：US20220159292A1

公开(公告)日：2022-05-19

申请号：US17590580

申请日：2022-02-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Haitao YANG ,  Shan GAO

IPC: H04N19/52 ,  H04N19/86 ,  H04N19/139 ,  H04N19/176 ,  H04N19/117 ,  H04N19/583 ,  H04N19/119 ,  H04N19/61 ,  H04N19/43

Abstract: The present invention relates to the field of video image processing, and provides a filtering method and an apparatus, to resolve a problem that subjective quality and objective quality of an image deteriorate because filtering processing cannot be performed on internal blocks of a non-translational motion prediction unit.

公开(公告)号：US20210006818A1

公开(公告)日：2021-01-07

申请号：US17025901

申请日：2020-09-18

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

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

IPC: H04N19/513 ,  H04N19/54 ,  H04N19/182 ,  H04N19/176 ,  H04N19/51 ,  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：US20200244983A1

公开(公告)日：2020-07-30

申请号：US16845161

申请日：2020-04-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Fan LIANG

IPC: H04N19/51 ,  H04N19/176 ,  H04N19/182 ,  H04N19/103 ,  H04N19/147 ,  H04N19/537 ,  H04N19/567 ,  H04N19/105

Abstract: A picture prediction method and a related apparatus are disclosed. A picture prediction method includes: determining K1 pixel samples in a picture block x, and determining a candidate motion information unit set corresponding to each pixel sample in the K1 pixel samples, where the candidate motion information unit set corresponding to each pixel sample includes at least one candidate motion information unit; determining a merged motion information unit set i including K1 motion information units, where each motion information unit in the merged motion information unit set i is selected from at least a part of motion information units in candidate motion information unit sets corresponding to different pixel samples in the K1 pixel samples; and predicting a pixel value of the picture block x by using a non-translational motion model and the merged motion information unit set i.

公开(公告)号：US20190268616A1

公开(公告)日：2019-08-29

申请号：US16413329

申请日：2019-05-15

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 affine motion model and the merged motion information unit set i.

公开(公告)号：US20180152728A1

公开(公告)日：2018-05-31

申请号：US15882346

申请日：2018-01-29

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

Inventor： Fangdong CHEN ,  Sixin LIN ,  Houqiang LI ,  Li LI

IPC: H04N19/58 ,  H04N19/124 ,  H04N19/172

Abstract: A video encoding and decoding method and apparatus are provided. The video encoding method includes: obtaining a first statistical characteristic of previous K frames of images of a video sequence; determining a first background frame; determining, according to the first statistical characteristic, a QP used for encoding the first background frame; encoding the first background frame according to the QP, to obtain a first background long-term reference frame; and encoding the (K+1)th frame of image of the video sequence to the (K+L)th frame of image of the video sequence according to the first background long-term reference frame. When encoding is performed on the (K+1)th frame of image of the video sequence to the (K+L)th frame of image of the video sequence, the used QP for encoding the background long-term reference frame is determined according to the first statistical characteristic related to video content of the previous K frames of images.

公开(公告)号：US20170195685A1

公开(公告)日：2017-07-06

申请号：US15463850

申请日：2017-03-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Fan LIANG

IPC: H04N19/51 ,  H04N19/105

CPC classification number: H04N19/51 ,  H04N19/103 ,  H04N19/105 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/537 ,  H04N19/567

Abstract: A picture prediction method and a related apparatus are disclosed. A picture prediction method includes: determining K1 pixel samples in a picture block x, and determining a candidate motion information unit set corresponding to each pixel sample in the K1 pixel samples, where the candidate motion information unit set corresponding to each pixel sample includes at least one candidate motion information unit; determining a merged motion information unit set i including K1 motion information units, where each motion information unit in the merged motion information unit set i is selected from at least a part of motion information units in candidate motion information unit sets corresponding to different pixel samples in the K1 pixel samples; and predicting a pixel value of the picture block x by using a non-translational motion model and the merged motion information unit set i.

公开(公告)号：US20150085942A1

公开(公告)日：2015-03-26

申请号：US14555121

申请日：2014-11-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qingpeng XIE ,  Fuzheng YANG ,  Shuai WAN ,  Sixin LIN ,  Lianhuan XIONG

IPC: H04N19/89 ,  H04N19/65 ,  H04N19/86

CPC classification number: H04N19/89 ,  H04N17/004 ,  H04N19/109 ,  H04N19/132 ,  H04N19/152 ,  H04N19/166 ,  H04N19/172 ,  H04N19/179 ,  H04N19/44 ,  H04N19/65 ,  H04N19/86

Abstract: A method, a system, and an apparatus for evaluating video quality are disclosed to improve accuracy of the evaluation. The method includes: obtaining information about a transmitted video; resolving the information about the transmitted video to obtain video frame parameters, where the video frame parameters include a compression distortion parameter and/or a video quality distortion parameter with packet loss; and calculating a video frame quality parameter according to the video frame parameters. An apparatus and a system for evaluating video quality are provided. The embodiments of the present invention improve accuracy of video quality evaluation without reference.

Abstract translation: 公开了一种用于评估视频质量的方法，系统和装置，以提高评估的准确性。 该方法包括：获取关于所发送的视频的信息; 解析关于所发送的视频的信息以获得视频帧参数，其中视频帧参数包括具有分组丢失的压缩失真参数和/或视频质量失真参数; 以及根据视频帧参数计算视频帧质量参数。 提供了一种用于评估视频质量的装置和系统。 本发明的实施例提高了视频质量评估的准确性，而无需参考。

公开(公告)号：US20220329845A1

公开(公告)日：2022-10-13

申请号：US17843030

申请日：2022-06-17

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: An 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：US20220094969A1

公开(公告)日：2022-03-24

申请号：US17540928

申请日：2021-12-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Hong ZHANG

IPC: H04N19/52 ,  H04N19/70 ,  H04N19/105 ,  H04N19/107 ,  H04N19/44

Abstract: An image prediction method and apparatus is disclosed. The image prediction method includes: determining, according to information about adjacent image units adjacent to a to-be-processed image unit, whether a set of candidate prediction modes for the to-be-processed image unit includes an affine merge mode, where the affine merge mode indicates that respective predicted images of the to-be-processed image unit and the adjacent image units of the to-be-processed image unit are obtained by using a same affine model; parsing a bitstream to obtain first indication information; determining, in the set of candidate prediction modes, a prediction mode for the to-be-processed image unit according to the first indication information; and determining a predicted image of the to-be-processed image unit according to the prediction mode. The method reduces a bit rate of encoding a prediction mode, thereby improving encoding efficiency.

公开(公告)号：US20200145689A1

公开(公告)日：2020-05-07

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 ,  H04N19/159 ,  H04N19/523 ,  H04N19/513 ,  H04N19/537

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.