公开(公告)号：US11516505B2

公开(公告)日：2022-11-29

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 ,  H04N19/159 ,  H04N19/176

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.

公开(公告)号：US11451824B2

公开(公告)日：2022-09-20

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: H04N19/563 ,  H04N19/103 ,  H04N19/176 ,  H04N19/57 ,  H04N19/80 ,  H04N19/172 ,  H04N19/513 ,  H04N19/55 ,  H04N19/56 ,  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：US11363292B2

公开(公告)日：2022-06-14

申请号：US16999031

申请日：2020-08-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Semih Esenlik ,  Ivan Krasnov ,  Zhijie Zhao ,  Jianle Chen

IPC: H04N11/02 ,  H04N19/563 ,  H04N19/103 ,  H04N19/176 ,  H04N19/57 ,  H04N19/80 ,  H04N19/172 ,  H04N19/513 ,  H04N19/55 ,  H04N19/56 ,  H04N19/577

Abstract: The present disclosure relates to motion vector determination using template or bilateral matching and predictor generation based on the motion vector. The template or bilateral matching and/or the predictor generation use interpolation filtering. The interpolation filtering operation accesses integer sample positions within a window, and further uses padded sample values for integer sample positions outside the window, which are based on at least one sample within said window, and uses the accessed integer sample position values as well as the padded sample values to perform the template or bilateral matching and/or predictor generation.

公开(公告)号：US11284086B2

公开(公告)日：2022-03-22

申请号：US16734040

申请日：2020-01-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher Kotra ,  Zhijie Zhao ,  Semih Esenlik ,  Han Gao

IPC: H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/124

Abstract: The present disclosure relates to image encoding/decoding applying decoder side intra-prediction mode determination (DIMD). In order to reduce the computational complexity, DIMD for a current coding block based on a template of a neighboring reconstructed coding block is not performed if the border between the current and the reconstructed coding block concurs with a border between coding tree blocks.

公开(公告)号：US20220021878A1

公开(公告)日：2022-01-20

申请号：US17363544

申请日：2021-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

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 a slice 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：US20210400267A1

公开(公告)日：2021-12-23

申请号：US17356047

申请日：2021-06-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/82 ,  H04N19/96 ,  H04N19/186

Abstract: A method of filtering a sample value of a picture is provided, with an integer t that is less than k and with an integer j in the range of 1 to m: generating, with an integer i in the range of 1 to k−t−1, a filtered sample value by applying a filter to the value of the sample p(i,j), wherein the filter is supported by a set of filter support samples, the set of filter support samples does not comprise any samples p(i′,j′) with row index i′ greater than k−t−1, and/or generating, with an integer i in the range of k−t to k, a filtered sample value by applying a filter to the value of the sample p(i,j), the filter is supported by a set of filter support samples, wherein the set of filter support samples does not comprise any samples p(i′,j′) with row index i′ less than k−t.

公开(公告)号：US11190807B2

公开(公告)日：2021-11-30

申请号：US16863986

申请日：2020-04-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih Esenlik ,  Anand Meher Kotra ,  Zhijie Zhao ,  Han Gao

IPC: H04N19/70 ,  H04N19/13 ,  H04N19/176 ,  H04N19/46 ,  H04N19/124 ,  H04N19/159 ,  H04N19/51 ,  H04N19/61 ,  H04N19/85 ,  H04N19/82

Abstract: An encoder and a decoder respectively encode and decode signal and syntax elements to/from a bitstream. In the encoding/decoding, semantics for the syntax elements are derived in accordance with previously decoded signal samples. Such encoding/decoding is applicable for instance to a video or audio signal.

公开(公告)号：US11102482B2

公开(公告)日：2021-08-24

申请号：US16994266

申请日：2020-08-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

Abstract: Embodiments of the present invention relate to the field of picture processing. Especially, the embodiments are directed to improving the deblocking filter of an image coding device. During the deblocking, at most a number MA of sample values of the first coding block adjacent to the block edge are modified and at most a number MB of sample values of the second coding block adjacent to the block edge are modified; or at most a number MA of sample values of the second coding block adjacent to the block edge are modified and at most a number MB of sample values of the first coding block adjacent to the block edge are modified, MA≠MB.

公开(公告)号：US11102480B2

公开(公告)日：2021-08-24

申请号：US16844740

申请日：2020-04-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher Kotra ,  Zhijie Zhao ,  Semih Esenlik ,  Han Gao

IPC: H04N19/109 ,  H04N19/176 ,  H04N19/503 ,  H04N19/61

Abstract: An apparatus is configured to determine an adopted intra prediction mode on the basis of a most probable modes list, a selected modes list and a non-selected modes list having a first portion and a second portion, wherein the adopted intra prediction mode is one of a plurality of intra prediction modes comprising a plurality of angular intra prediction modes for predicting sample values of a current picture block. The apparatus includes a processor configured to generate the first portion of the non-selected modes list by including one or more angular intra prediction modes determined to be close to a respective angular intra prediction mode of the most probable modes list and the selected modes list. The processor is further configured to determine the adopted intra prediction mode.

公开(公告)号：US10931965B2

公开(公告)日：2021-02-23

申请号：US16227317

申请日：2018-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhijie Zhao ,  Max Blaeser ,  Mathias Wien

IPC: H04N19/52 ,  H04N19/11 ,  H04N19/147 ,  H04N19/176 ,  H04N19/119 ,  H04N19/513 ,  H04N19/91

Abstract: The invention relates to an encoding apparatus for processing a video signal comprising a plurality of frames dividable into video coding blocks. A first video coding block of a current frame of the video signal is partitioned into a first segment associated with a first segment motion vector relative to a first reference frame of the video signal and a second segment. The first video coding block is associated with a plurality of virtual partitions. Each virtual partition is associated with a respective subset of the plurality of video coding blocks of the current frame. Each video coding block of the respective subset neighbors the first video coding block and is associated with a motion vector.