公开(公告)号：US20220217344A1

公开(公告)日：2022-07-07

申请号：US17706328

申请日：2022-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Han GAO ,  Semih ESENLIK ,  Elena Alexandrovna ALSHINA

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/167 ,  H04N19/503 ,  H04N19/159 ,  H04N19/107 ,  H04N19/105

Abstract: The present disclosure provides example computer-implemented methods and decoders of video coding for prediction of a block using an inter prediction mode to obtain predicted samples for the block. One example method includes defining a size of a subblock that is smaller than the size of the block. A position of the subblock within the block is specified. One or more allowed split directions of a triangle partitioning mode (TPM) is determined for the subblock depending on which of the sides of the subblock coincide with the sides of the block. One or more predicted samples for the block is obtained by using TPM partitioning performed for the subblock in accordance with the size of the subblock, the position of the subblock within the block, and TPM split direction of the subblock. The block is reconstructed based on the one or more predicted samples.

公开(公告)号：US20220210422A1

公开(公告)日：2022-06-30

申请号：US17697244

申请日：2022-03-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih ESENLIK ,  Biao WANG ,  Anand Meher KOTRA ,  Elena Alexandrovna ALSHINA

IPC: H04N19/129 ,  H04N19/169 ,  H04N19/176 ,  H04N19/174

Abstract: A method of decoding of a picture from a video bitstream is disclosed. The video bitstream includes a slice header of a current slice and data representing the current slice. The method comprises: obtaining a parameter used to derive a number of tiles in the current slice from the slice header when a slice address of the current slice is not an address of a last tile in the picture where the current slice located; and reconstructing the current slice using the number of tiles in the current slice and the data representing the current slice.

公开(公告)号：US20220132121A1

公开(公告)日：2022-04-28

申请号：US17566834

申请日：2021-12-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han GAO ,  Semih ESENLIK ,  Elena Alexandrovna ALSHINA ,  Anand Meher KOTRA ,  Biao WANG

IPC: H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46

Abstract: The present disclosure provides a method of coding implemented by a decoding device, the method comprising: obtaining a value of a splitting mode index for a current coding block; obtaining a value of an angle index for the current coding block according to the value of the splitting mode index value and a pre-stored table; setting a value of an index partIdx according to the value of the angle index; and storing motion information for the current coding block according to the value of the index partIdx.

公开(公告)号：US20220116648A1

公开(公告)日：2022-04-14

申请号：US17556594

申请日：2021-12-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sriram SETHURAMAN ,  Sagar KOTECHA ,  Jeeva Raj A ,  Semih ESENLIK

IPC: H04N19/52 ,  H04N19/172 ,  H04N19/577 ,  H04N19/70 ,  H04N19/174 ,  H04N19/176

Abstract: It is provided a method of decoding a video bitstream implemented by a decoding device, the video bitstream including coded data for a plurality of pictures. The decoding method comprises: parsing an enabling flag for decoder motion vector refinement (DMVR) from a sequence parameter set of the video bitstream; parsing a disabling flag for DMVR from a syntax structure of a lower hierarchic syntax structure level than the sequence parameter set (SPS) level of the video bitstream; and performing DMVR based inter bi-prediction for a current block within at least one region of the current picture to obtain predicted sample values of the current block when at least one pre-defined condition is fulfilled, and wherein the at least one pre-defined condition comprises that the parsed value of the disabling flag specifies that DMVR based inter bi-prediction is enabled for at least one region of the current picture.

公开(公告)号：US20220116586A1

公开(公告)日：2022-04-14

申请号：US17557930

申请日：2021-12-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih ESENLIK ,  Max BLAESER ,  Zhijie ZHAO ,  Han GAO ,  Biao WANG ,  Anand Meher KOTRA ,  Elena Alexandrovna ALSHINA

IPC: H04N19/103 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/70 ,  H04N19/132

Abstract: A method for coding implemented by a decoding device or an encoding device includes: obtaining a first prediction mode for a first sub-block, obtaining a second prediction mode for a second sub-block; obtaining a first prediction value for a sample in the current block according to the first prediction mode, obtaining a second prediction value for the sample in the current block according to the second prediction mode; obtaining a value of an indicator, the value of the indicator indicating a blending operation which is performed for the sample in the current block; and obtaining a combined prediction value for the sample in the current block, according to the value of the indictor, the first prediction value, and the second prediction value. The blending operation adaptively performs around a separation line dividing the current block into at least the first sub-block and the second sub-block.

公开(公告)号：US20220014784A1

公开(公告)日：2022-01-13

申请号：US17478621

申请日：2021-09-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao WANG ,  Semih ESENLIK ,  Anand Meher KOTRA ,  Han GAO ,  Elena Alexandrovna ALSHINA

IPC: H04N19/593 ,  H04N19/172 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132

Abstract: A method of coding implemented is provided. The method includes the following operations: obtained the height and width of a prediction block without applying clipping operation; calculating a value of a vertical component of an intra prediction sample based on the height and width of the prediction block; calculating a value of a horizontal component of the intra prediction sample based on the height and width of the prediction block; and generating the intra prediction sample based on the value of the vertical component and the value of the horizon component.

公开(公告)号：US20210409754A1

公开(公告)日：2021-12-30

申请号：US17467794

申请日：2021-09-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sriram SETHURAMAN ,  Sagar KOTECHA ,  Jeeva Raj A ,  Semih ESENLIK

IPC: H04N19/52 ,  H04N19/533 ,  H04N19/57 ,  H04N19/176 ,  H04N19/567 ,  H04N19/172 ,  H04N19/105 ,  H04N19/56

Abstract: A method for determining a motion vector to be used in inter-prediction of a current block of a video picture, the method comprising: obtaining an initial motion vector; obtaining at least two groups of points according to the initial motion vector, wherein a first group of the at least two groups of points only includes a first point corresponding to the initial motion vector and additional N points with N≥0 and wherein each point of the first group is closer to the first point than any point of the points of a second group of the at least two groups; and obtaining the motion vector for the current block according to the at least two groups of points and a cost function.

公开(公告)号：US20210352287A1

公开(公告)日：2021-11-11

申请号：US17369862

申请日：2021-07-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Semih ESENLIK ,  Max BLAESER ,  Han GAO ,  Zhijie ZHAO ,  Anand Meher KOTRA ,  Biao WANG ,  Elena Alexandrovna ALSHINA

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/50

Abstract: A method of coding implemented by a decoding device or encoding device, the method comprising obtaining a value of an angle parameter for a current block; obtaining a value of a width of the current block and a value of a height of the current block; calculating a ratio value between the value of the width and the value of height; obtaining a first value according to the value of angle parameter and the ratio value; calculating a sample distance value for a sample in the current block according to the first value; obtaining a prediction value for the sample in the current block according to the sample distance value.

公开(公告)号：US20210266538A1

公开(公告)日：2021-08-26

申请号：US17245037

申请日：2021-04-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/159 ,  H04N19/132 ,  H04N19/176

Abstract: Methods, systems, and computer programs encoded on a computer storage medium for marking the availability of a potential candidate coding block for intra prediction mode estimation of a current coding block are provided. One example method includes obtaining a parent block of a current coding block (parentCurr), and a parent block of a candidate coding block (parentCand). The current coding block and the candidate coding block are each obtained by splitting of the parentCurr and the parentCand, respectively. In one aspect, the current coding block cannot use an intra prediction mode of a potential candidate coding block when parentCand and parentCurr are the same block, a function of a number of quadtree, ternary tree, and binary tree splitting operations is greater than a threshold minus 1, and a split mode of the parent block of the current coding block parentCurr is a ternary tree split.

公开(公告)号：US20210176493A1

公开(公告)日：2021-06-10

申请号：US17170065

申请日：2021-02-08

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/176 ,  H04N19/159

Abstract: The disclosure relates to a method of decoding implemented by a decoding device, comprising: obtaining a value of a reference line index for a current block; constructing a most probable mode, MPM, list for the current block; obtaining a value of intra-prediction mode index for the current block; when the value of the reference line index is not equal to 0, obtaining an intra prediction mode of the current block according to the MPM list for the current block and the value of the intra-prediction mode index for the current block, wherein the value of the intra-prediction mode index indicates a position that corresponds to the intra prediction mode of the current block among angular intra-prediction modes in the MPM list. The disclosure also relates to a coding apparatus and a non-transitory machine-readable medium.