公开(公告)号：US20240187571A1

公开(公告)日：2024-06-06

申请号：US18527914

申请日：2023-12-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG

IPC: H04N19/105 ,  G06T9/40 ,  H04N19/127 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/105 ,  G06T9/40 ,  H04N19/127 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: A video picture prediction method and apparatus are provided, to provide a manner of determining a maximum length of a candidate motion vector list corresponding to a subblock merge mode. The method comprises: parsing a first indicator from a bitstream; if the first indicator indicates that a candidate mode used to inter predict the to-be-processed block comprises an affine mode, parsing a second indicator from the bitstream, where the second indicator is used to indicate a maximum length of a first candidate motion vector list, and the first candidate motion vector list is constructed for the to-be-processed block, a subblock merge prediction mode is used for the to-be-processed block; and determining the maximum length of the first candidate motion vector list based on the second indicator.

公开(公告)号：US20230121428A1

公开(公告)日：2023-04-20

申请号：US17975932

申请日：2022-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30

Abstract: This disclosure discloses a method for obtaining a candidate motion vector list, an apparatus, an encoder, and a decoder. The method for obtaining a candidate motion vector list comprises: when a first candidate picture block is encoded/decoded and an inter prediction mode is used, determining whether a reference picture of the first candidate picture block is the same as a reference picture of a current block; and constructing a candidate motion vector list of the current block based on a determining result; when the reference picture of the first candidate picture block is different from the reference picture of the current block, the MV of the first candidate picture block is not used to construct the list. Implementing this disclosure can reduce complexity of a motion information derivation process, and improve coding efficiency.

公开(公告)号：US20220400260A1

公开(公告)日：2022-12-15

申请号：US17861641

申请日：2022-07-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Huanbang CHEN ,  Vasily Alexeevich RUFITSKIY ,  Haitao YANG ,  Elena Alexandrovna ALSHINA

IPC: H04N19/119 ,  H04N19/174 ,  H04N19/172 ,  H04N19/176 ,  H04N19/70 ,  H04N19/503

Abstract: A method of coding is described. The method can include obtaining a bitstream for a current picture, obtaining a value of a first indicator for the current picture according to the bitstream indicating a slice type, and obtaining a value of a second indicator for the current picture according to the bitstream indicating whether a weighted prediction parameter is present in a picture header or slice header of the bitstream. The method can also include parsing a value of the weighted prediction parameter for a current block of a current slice of the current picture from the bitstream. Furthermore, the method can include predicting the current block according to the value of the weighted prediction parameter.

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：US20220248062A1

公开(公告)日：2022-08-04

申请号：US17707202

申请日：2022-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich SOLOVYEV ,  Maxim Borisovitch SYCHEV ,  Huanbang CHEN ,  Alexander Alexandrovich KARABUTOV ,  Roman Igorevich CHERNYAK ,  Sergey Yurievich IKONIN ,  Haitao YANG ,  Elena Alexandrovna ALSHINA

IPC: H04N19/80 ,  H04N19/109 ,  H04N19/132 ,  H04N19/182 ,  H04N19/176 ,  H04N19/139 ,  H04N19/105 ,  H04N19/117 ,  H04N19/52 ,  H04N19/196

Abstract: An apparatus for inter prediction of a sample value of a current full-integer pixel of a plurality of pixels associated with a current block of a current frame of a video signal is disclosed. The apparatus is configured to: determine a motion vector of the current full-integer pixel based on a motion compensation model; determine for the current full-integer pixel a corresponding sub-integer pixel in a reference frame; determine positions of a set of corresponding filter support pixels in the reference frame; obtain a respective sample value of the corresponding sub-integer pixel of the current full-integer pixel and the corresponding filter support pixels in the reference frame by applying a bilinear interpolation; and determine the inter predicted sample value of the current full-integer pixel.

公开(公告)号：US20220030223A1

公开(公告)日：2022-01-27

申请号：US17496001

申请日：2021-10-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Han GAO ,  Haitao YANG

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/132 ,  H04N19/159 ,  H04N19/70 ,  H04N19/176

Abstract: The disclosure relates to a method of coding implemented by a decoding device, comprising: obtaining a value of a maximum number of merging motion vector prediction, MVP, candidates for a current block, wherein the current block is predicted using intra block copy, IBC mode; setting a value of a MVP index to zero, when the value of the maximum number of MVP candidates for the current block is equal to one; obtaining a motion vector of the current block according to the MVP index and a candidate list; obtaining prediction samples values of the current block according to the motion vector of the current block.

公开(公告)号：US20210306644A1

公开(公告)日：2021-09-30

申请号：US17345556

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/159 ,  H04N19/137 ,  H04N19/132 ,  H04N19/82 ,  H04N19/176

Abstract: This application discloses an inter prediction method and apparatus. The method includes: determining a plurality of first picture blocks in a to-be-processed picture block based on a preset picture split width, a preset picture split height, and a width and a height of the to-be-processed picture block; separately performing bi-directional optical flow prediction on the plurality of first picture blocks to obtain a predictor of each first picture block; and obtaining a predictor of the to-be-processed picture block with a combination of the predictors of the plurality of first picture blocks. The apparatus includes a determining module, a prediction module, and a combination module. In this application, complexity of implementing inter prediction can be reduced, and processing efficiency can be improved.

公开(公告)号：US20210185351A1

公开(公告)日：2021-06-17

申请号：US17188691

申请日：2021-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Ting FU ,  Haitao YANG

IPC: H04N19/52 ,  H04N19/577

Abstract: A motion information candidate list construction method includes: performing a first processing process on all neighboring image blocks of a current image block until a quantity of candidate motion information sets in a candidate motion information list is equal to a first preset value or all the neighboring image blocks are traversed; then traversing at least two extra to be selected motion information sets, and storing, in the candidate motion information list, an extra to be selected motion information set that satisfies a preset condition, until the quantity of candidate motion information sets in the candidate motion information list is equal to a preset quantity value or the extra to be selected motion information sets are traversedextra to be selected motion.

公开(公告)号：US20210176462A1

公开(公告)日：2021-06-10

申请号：US17180274

申请日：2021-02-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/30 ,  H04N19/176

Abstract: This disclosure discloses a method for obtaining a candidate motion vector list, an apparatus, an encoder, and a decoder. The method for obtaining a candidate motion vector list comprises: when a first candidate picture block is encoded/decoded and an inter prediction mode is used, determining whether a reference picture of the first candidate picture block is the same as a reference picture of a current block; and constructing a candidate motion vector list of the current block based on a determining result; when the reference picture of the first candidate picture block is different from the reference picture of the current block, the MV of the first candidate picture block is not used to construct the list. Implementing this disclosure can reduce complexity of a motion information derivation process, and improve coding efficiency.

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.