公开(公告)号：US20210258618A1

公开(公告)日：2021-08-19

申请号：US17169175

申请日：2021-02-05

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/132 ,  H04N19/70 ,  H04N19/176

Abstract: The present disclosure relates generally to video coding and picture partitioning methods. In particular, the disclosure is concerned with relations between partition constraint elements, by setting partitioning rules for different picture partitioning methods. The disclosure provides devices and corresponding methods for generating or processing a bitstream including encoded pictures, particularly for setting and including partition constraint element into the bitstream. One of the devices is configured to determine a minimum luma size of a leaf block resulting from quadtree splitting (MinQtSizeY), determine a maximum luma size of a coding block where partitioning using a binary tree splitting is allowed (MaxBtSizeY) based on the MinQtSizeY, and include information for the determined MinQtSizeY into the bitstream.

公开(公告)号：US20210227218A1

公开(公告)日：2021-07-22

申请号：US17190231

申请日：2021-03-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

Abstract: The present disclosure relates to methods and devices to be employed for encoding and decoding of image or video signal. They include determination of whether or not the size of a current block is larger than a minimum allowed quadtree leaf node size. If the size of the current block is not larger than the minimum allowed quadtree leaf node size, multi-type tree splitting is applied to the current block. The minimum allowed quadtree leaf node size is not larger than a maximum allowed binary tree root node size or the minimum allowed quadtree leaf node size is not larger than a maximum allowed ternary tree root node size.

公开(公告)号：US20210185326A1

公开(公告)日：2021-06-17

申请号：US17170028

申请日：2021-02-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

Abstract: A method to derive candidate intra prediction modes, comprising: recording an intra prediction mode of at least one previous coding unit, wherein the previous coding unit is not adjacent to a to-be-processed coding unit; adding at least one recorded intra prediction mode into a set of candidate intra prediction modes, when the number of the candidate intra prediction modes is less than a preset threshold.

公开(公告)号：US20210144374A1

公开(公告)日：2021-05-13

申请号：US17154788

申请日：2021-01-21

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/119 ,  H04N19/184 ,  H04N19/176 ,  H04N19/105

Abstract: A method of coding implemented by a decoding device, comprising obtaining a bitstream; obtaining a value of an indicator for a current block according to the bitstream; obtaining a value of a first parameter for the current block and a value of a second parameter for the current block, according to the value of the indicator and a predefined lookup table; obtaining a value of a sample distance for a sample which is located in the current block, according to the value of the first parameter and the value of the second parameter; obtaining a prediction value for the sample, according to the value of the sample distance for the sample.

公开(公告)号：US20200236398A1

公开(公告)日：2020-07-23

申请号：US16843707

申请日：2020-04-08

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/57 ,  H04N19/52 ,  H04N19/533 ,  H04N19/56 ,  H04N19/573

Abstract: The present disclosure relates to motion vector determination employing template matching. At first, an initial motion vector is obtained. If the initial motion vector points to a position which is fractional and thus, requires interpolation from the integer sample positions, 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 matching to define a refinement of the initial motion vector.

公开(公告)号：US20200021849A1

公开(公告)日：2020-01-16

申请号：US16579373

申请日：2019-09-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih ESENLIK ,  Anand Meher KOTRA ,  Zhijie ZHAO

IPC: H04N19/61 ,  H04N19/159 ,  H04N19/13 ,  H04N19/176

Abstract: An apparatus for decoding encoded video data is provided. The video data comprises one or more frames, each frame being partitioned into a plurality of regions, each region comprising one or more video coding blocks. The decoding apparatus comprises: a decoding unit configured to decode the encoded video data for providing a residual video coding block associated with a current video coding block of a current frame; a prediction unit configured to generate for the current video coding block a predicted video coding block; a restoration unit configured to restore the current video coding block on the basis of the residual video coding block and the predicted video coding block; and a flip unit configured to flip each region of a subset of the plurality of regions of the current frame about a flip axis of that region. Moreover, the invention relates to a corresponding encoding apparatus.

公开(公告)号：US20240146924A1

公开(公告)日：2024-05-02

申请号：US18545145

申请日：2023-12-19

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

CPC classification number: 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：US20240137527A1

公开(公告)日：2024-04-25

申请号：US18371231

申请日：2023-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/196

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/197

Abstract: A method of coding implemented by a decoding device or an encoding device, comprising obtaining indication information for a luma position (cbWidth/2, cbHeight/2) of a current coding block, relative to a top-left luma sample position (xCb, yCb) of the current coding block; setting a value of a luma intra prediction mode associated with the current coding block to a first default value, when the indication information indicates that an Intra Block Copy (IBC) mode or palette mode is applied for the luma component at the luma position (cbWidth/2, cbHeight/2), relative to the top-left luma sample position (xCb, yCb) of the current coding block; and obtaining a value of a chroma intra prediction mode based on the value of the luma intra prediction mode of the current coding block.

公开(公告)号：US20240056596A1

公开(公告)日：2024-02-15

申请号：US18494045

申请日：2023-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/50 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/50 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: The present disclosure relates to the field of picture processing. Especially, the disclosure deals with improving the prediction of a block of a picture when decoding or encoding. A method of coding a block of a picture, comprising: obtaining an indication parameter for a current coding block. The indication parameter represents whether a multi-hypothesis prediction is applied to the current coding block. When the indication parameter represents that the multi-hypothesis prediction is applied to the current coding block, coding the current coding block according to a planar mode.

公开(公告)号：US20230209043A1

公开(公告)日：2023-06-29

申请号：US18068235

申请日：2022-12-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Anand Meher KOTRA ,  Jianle Chen ,  Semih Esenlik ,  Biao Wang ,  Han Gao ,  Zhijie Zhao

IPC: H04N19/105 ,  H04N19/129 ,  H04N19/176 ,  H04N19/169

CPC classification number: H04N19/105 ,  H04N19/129 ,  H04N19/176 ,  H04N19/1883

Abstract: Embodiments provide methods and devices (encoder and/or decoder) of coding a picture. A History Based Motion Vector Prediction (HMVP) list for a current Coding Tree Unit (CTU) row within a tile of a picture is initialized and a CTU of the current CTU row is processed based on the initialized HMVP list.