公开(公告)号：US20210211658A1

公开(公告)日：2021-07-08

申请号：US17210136

申请日：2021-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A method for intra reference sample filter switching for intra-prediction is described herein. The method comprises determining an intra prediction mode and an aspect ratio of a block to be predicted, and selecting an interpolation filter or a reference sample smoothing filter based on the intra prediction mode and the aspect ratio.

公开(公告)号：US20210195232A1

公开(公告)日：2021-06-24

申请号：US17135624

申请日：2020-12-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih ESENLIK ,  Zhijie ZHAO ,  Ivan KRASNOV ,  Jianle CHEN

IPC: H04N19/513 ,  H04N19/172 ,  H04N19/55 ,  H04N19/56 ,  H04N19/176 ,  H04N19/57 ,  H04N19/577

Abstract: An apparatus and method determining a motion vector for a block, which relates to motion vector determination employing template matching or bilateral matching, are provided. At first, candidate motion vectors are obtained and are mapped to respective representatives (representative motion vectors). In particular, if the obtained candidate motion vectors point to fractional positions and thus, interpolation from the integer sample positions is required, the initial motion vector is rounded to a closest integer sample position. The rounded position is then used to define the search space for the template or bilateral matching to determine the best matching motion vector for the block (in other words, a refinement of an initial motion vector around which the candidate space is spanned). Finally, the mapping operation can be reverted in order to obtain a result in the original search space.

公开(公告)号：US20210185317A1

公开(公告)日：2021-06-17

申请号：US17188940

申请日：2021-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Han GAO ,  Semih ESENLIK ,  Zhijie ZHAO ,  Anand Meher KOTRA ,  Jianle CHEN

IPC: H04N19/122 ,  H04N19/119 ,  H04N19/60 ,  H04N19/176 ,  H04N19/44

Abstract: A method for boundary partition of a current block is provided. The method includes obtaining a partition indicator from a received bitstream; determining whether the partition indicator indicates that the current block is to be split and whether the current block is a boundary block; and performing a non-inverse transform operation on an inside part of the current block when the partition indicator indicates that the current block is not to be split and the current block is a boundary block, wherein the inside part of the block is located within the picture. For the boundary block which is determined not to be split, a non-inverse transform operation is chosen. This avoids a normal inverse transform on the residuals of the inside part (within the picture) of the current block in the decoder, so number of blocks for the inverse transformation is decreased, and decoding complexity is thus reduced.

公开(公告)号：US20210144365A1

公开(公告)日：2021-05-13

申请号：US17152341

申请日：2021-01-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  G06F1/03

Abstract: Methods, apparatus, and computer-readable storage media for intra prediction of a current block of a picture are provided. In one aspect, a method includes: calculating a preliminary prediction sample value of a sample of the current block based on reference sample values of reference samples located in reconstructed neighboring blocks of the current block, and calculating a final prediction sample value of the sample by adding an increment value to the preliminary prediction sample value, the increment value being based on a position of the sample in the current block.

公开(公告)号：US20210029381A1

公开(公告)日：2021-01-28

申请号：US17065662

申请日：2020-10-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dejun ZHANG ,  Vladyslav ZAKHARCHENKO ,  Jianle CHEN ,  Bo LIU

IPC: H04N19/85 ,  H04N19/167 ,  H04N19/105

Abstract: A method for obtaining a global matched patch is provided, including: obtaining patch sets of N frames of point clouds; performing a matching operation on one or more patches in a matched patch set of a reference frame of an ith frame in the N frames and one or more unmatched patches in a patch set of the ith frame, to obtain a matched patch set of the ith frame, where the matched patch set of the ith frame includes n patches; and determining M global matched patch sets based on matched patch sets of the N frames, where at least one of the M global matched patch sets is a set of patches that have a matching relationship across N1 frames, and the N1 frames represent at least a portion of the N frames. This method helps improve video coding efficiency.

公开(公告)号：US20210006839A1

公开(公告)日：2021-01-07

申请号：US17025246

申请日：2020-09-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaomu LU ,  Jianle CHEN ,  Shan GAO ,  Haitao YANG

IPC: H04N19/82 ,  H04N19/176

Abstract: Embodiments of this application disclose a picture filtering method and apparatus, and a video codec, relate to the field of video coding technologies, and may be applied to, for example, but is not limited to, a deblocking filtering scenario, to help improve video coding performance. The picture filtering method may include: determining, based on dimension information of a to-be-filtered current picture block, a target filter used to filter the current picture block, where the dimension information of the current picture block includes the width or height of the current picture block; and performing filtering processing on the current picture block by using a target filter. The technical solutions disclosed in the embodiments of this application are applicable to a next-generation video coding technology.

公开(公告)号：US20210006786A1

公开(公告)日：2021-01-07

申请号：US17005292

申请日：2020-08-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han GAO ,  Semih ESENLIK ,  Jianle CHEN ,  Anand Meher KOTRA ,  Biao WANG ,  Zhijie ZHAO

IPC: H04N19/119 ,  H04N19/70 ,  H04N19/176 ,  H04N19/96 ,  H04N19/159 ,  H04N19/186

Abstract: The present disclosure provides an encoding apparatus and a decoding apparatus, as well as an encoding method and a decoding method. In particular, the present disclosure relates to block partitioning and signaling the partitioning parameters in a bitstream. An override flag in an image region header indicates whether or not a block is to be partitioned according to a first partition constraint information. The override flag is included in the bitstream and the block is partitioned accordingly.

公开(公告)号：US20200244965A1

公开(公告)日：2020-07-30

申请号：US16850854

申请日：2020-04-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Maxim Borisovitch SYCHEV ,  Georgy Aleksandrovich ZHULIKOV ,  Timofey Mikhailovich SOLOVYEV ,  Jianle CHEN

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/137 ,  H04N19/117 ,  H04N19/176

Abstract: The disclosure relates to an apparatus and method for inter prediction of a sample value of a current full-integer pixel of a plurality of pixels of a current block of a current frame of a video signal. The apparatus comprises a processing unit configured to: determine a motion vector of the current full-integer pixel on the basis of the current frame and a reference frame of the video signal and/or on the basis of a motion compensation model; determine for the current full-integer pixel a corresponding sub-integer pixel in the reference frame on the basis of the motion vector of the current full-integer pixel; generate on the basis of a predefined set of filter support pixels in the current frame a set of corresponding filter support pixels in the reference frame, wherein the predefined set of filter support pixels in the current frame comprises one or more neighboring full-integer and/or sub-integer pixels of the current full-integer pixel; determine 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; and determine the inter predicted sample value of the current pixel in the current frame by applying a spatial high-pass filter to the sample value of the corresponding sub-integer pixel of the current full-integer pixel in the reference frame and to the sample values of the corresponding filter support pixels in the reference frame.

公开(公告)号：US20250159143A1

公开(公告)日：2025-05-15

申请号：US18962489

申请日：2024-11-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao WANG ,  Semih ESENLIK ,  Anand Meher KOTRA ,  Han GAO ,  Jianle CHEN

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/593

Abstract: Devices and methods for Intra prediction are provided. The method includes: parsing a bitstream, wherein the bitstream includes indication information to indicate whether a closest neighboring reference line to the current block is used for an intra prediction; determining an intra prediction mode of the current block is not Planar mode when the closest neighboring reference line to the current block is not used for the intra prediction; and obtaining an index indicating which intra prediction mode in a set of most probable modes is used for the intra prediction mode of the current block when the intra prediction mode of the current block is not Planar mode. The method can improve the efficiency to determine the intra prediction mode of the current block.

公开(公告)号：US20250113062A1

公开(公告)日：2025-04-03

申请号：US18977533

申请日：2024-12-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich CHERNYAK ,  Timofey Mikhailovich SOLOVYEV ,  Sergey Yurievich IKONIN ,  Alexander Alexandrovich KARABUTOV ,  Jianle CHEN

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/107 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184

Abstract: The present disclosure relates to methods and apparatuses for encoding video data into a bitstream and for decoding video data received in a bitstream. A second control flag indicating whether or not to use multi-hypothesis prediction for intra and inter mode is generated and transmitted only conditionally, upon a determination whether or not separate merge list technique for subblock merge candidates is used. On the other hand, a decoder is capable of deciding usage of multi-hypothesis prediction for intra and inter mode and separate merge list technique for subblock merge candidates even though the second control flag is transmitted only conditionally.