公开(公告)号：US20250157239A1

公开(公告)日：2025-05-15

申请号：US19019863

申请日：2025-01-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang Chen ,  Chen Zhu ,  Yin Zhao ,  Li Song

IPC: G06V30/148 ,  G06V10/26 ,  G06V10/764 ,  G06V30/146 ,  G06V30/19 ,  G06V30/28

Abstract: In a word-including picture encoding method, a word area in a first picture is obtained, where a word area includes at least one character. The word area is filled to obtain a word-filled area, where a height or a width of the word-filled area is n times a preset size, and where n≥1. A second picture is obtained based on the word-filled area and the second picture and word alignment side information including the height or width of the word-filled area is encoded to obtain a first bitstream.

公开(公告)号：US12108048B2

公开(公告)日：2024-10-01

申请号：US18318731

申请日：2023-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Jianle Chen ,  Jiali Fu

IPC: H04N19/139 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/139 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61

Abstract: A motion vector prediction method includes parsing a bitstream to obtain an index value of a candidate motion vector list and constructing the candidate motion vector list that includes. candidate motion vectors of K control points of a current block. The candidate motion vectors of K control points are obtained based on a 2N-parameter affine transform model used for a neighboring block of the current block, where N and K are integers greater than or equal to 2 and less than or equal to 4 with N not being equal to K. The method further includes determining, in the candidate motion vector list, target candidate motion vectors of the K control points based on the index value and obtaining a predicted motion vector of each subblock of the current block based on the target candidate motion vectors of the K control points.

公开(公告)号：US12108046B2

公开(公告)日：2024-10-01

申请号：US17529106

申请日：2021-11-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Lian Zhang

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

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: This application discloses an inter prediction method, where a to-be-processed block includes one or more subblocks, and the method includes: determining a temporal offset vector of the to-be-processed block based on a spatially neighboring block of the to-be-processed block, where the temporal offset vector is used to determine a collocated subblock of the subblock of the to-be-processed block; and determining a motion vector of the subblock of the to-be-processed block based on a motion vector of the collocated subblock, where the motion vector of the subblock of the to-be-processed block is obtained based on a first preset motion vector when the motion vector of the collocated subblock is unavailable. This application can improve prediction accuracy in coding and increase coding efficiency.

公开(公告)号：US20240276006A1

公开(公告)日：2024-08-15

申请号：US18628367

申请日：2024-04-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Sixin Lin ,  Fan Liang

IPC: H04N19/51 ,  H04N19/103 ,  H04N19/105 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/537 ,  H04N19/567

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

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：US20240196003A1

公开(公告)日：2024-06-13

申请号：US18545816

申请日：2023-12-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Ting Fu ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/577

CPC classification number: 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：US20240121421A1

公开(公告)日：2024-04-11

申请号：US18485330

申请日：2023-10-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/189

CPC classification number: H04N19/513 ,  H04N19/176 ,  H04N19/189 ,  H04N19/567

Abstract: This application provides a motion vector obtaining method and apparatus. The method includes: determining a target offset vector of a block and identifier information of a target picture, wherein the block comprises at least one sub-block; determining a location of the sub-block; determining, as a target location coordinate value of a collocated sub-block, a location coordinate value obtained by performing a clipping operation on an initial location coordinate value in a range, wherein the initial location coordinate value is based on the location of the sub-block and the target offset vector; and obtaining a motion vector of the sub-block based on a motion vector corresponding to the target location coordinate value. Thus, a range of the target offset vector is limited, so that a quantity of memory read times can be reduced in a process of obtaining the motion vector of the collocated sub-block.

公开(公告)号：US11924407B2

公开(公告)日：2024-03-05

申请号：US17451139

申请日：2021-10-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin ,  Roman Igorevich Chernyak ,  Alexander Alexandrovich Karabutov ,  Elena Alexandrovna Alshina ,  Huanbang Chen

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82

Abstract: The present disclosure relates to video encoding and decoding, and in particular, a method for inter prediction for a block in a frame of a video signal includes: constructing a history-based motion information candidate list, wherein the list is an ordered list comprising N history-based motion information candidates Hk containing motion information of N preceding blocks preceding the block, wherein each history-based motion information candidate comprises: one or more motion vectors (MVs), one or more reference picture indices corresponding to the MVs, and an interpolation filter index; adding one or more history-based motion information candidates from the history-based motion information candidate list into a motion information candidate list for the block; and deriving motion information for the block based on the motion information candidate list.

公开(公告)号：US11889061B2

公开(公告)日：2024-01-30

申请号：US17975932

申请日：2022-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Lian Zhang

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30

CPC classification number: 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：US11812050B2

公开(公告)日：2023-11-07

申请号：US17898044

申请日：2022-08-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/189 ,  H04N19/567

CPC classification number: H04N19/513 ,  H04N19/176 ,  H04N19/189 ,  H04N19/567

Abstract: This application provides a motion vector obtaining method and apparatus. The method includes: determining a target offset vector of a block and identifier information of a target picture, wherein the block comprises at least one sub-block; determining a location of the sub-block; determining, as a target location coordinate value of a collocated sub-block, a location coordinate value obtained by performing a clipping operation on an initial location coordinate value in a range, wherein the initial location coordinate value is based on the location of the sub-block and the target offset vector; and obtaining a motion vector of the sub-block based on a motion vector corresponding to the target location coordinate value. Thus, a range of the target offset vector is limited, so that a quantity of memory read times can be reduced in a process of obtaining the motion vector of the collocated sub-block.

公开(公告)号：US11792389B2

公开(公告)日：2023-10-17

申请号：US17189953

申请日：2021-03-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Jianle Chen ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/137

CPC classification number: H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176

Abstract: Embodiments of this application disclose bi-directional inter prediction methods and apparatuses. In an embodiment, a method comprises: determining that a first reference picture index of a first reference picture list is associated with a current block to be predicted; determining that a second reference picture index of a second reference picture list is associated with the current block; and predicting the current block based on the first reference picture index and the second reference picture index.