公开(公告)号：US10924756B2

公开(公告)日：2021-02-16

申请号：US16227249

申请日：2018-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhijie Zhao ,  Max Blaeser ,  Mathias Wien

IPC: H04N19/52 ,  H04N19/105 ,  H04N5/14 ,  H04N19/51 ,  H04N19/176 ,  H04N19/463 ,  H04N19/567 ,  H04N19/91 ,  H04N19/119 ,  H04N19/70 ,  H04N19/147 ,  H04N19/182 ,  H04N19/65 ,  H04N19/13 ,  H04N19/117 ,  H04N19/86

Abstract: Embodiments of the disclosure relate to an encoding apparatus and a decoding apparatus. The encoding apparatus is configured to process a video signal, the video signal comprising a plurality of frames, each frame being dividable into a plurality of video coding blocks, each video coding block comprising a plurality of pixels. The encoding apparatus comprises a partitioner configured to partition a first video coding block of the plurality of video coding blocks of a first frame of the video signal into a first segment and a second segment, wherein the first segment comprises a first set of the plurality of pixels of the first video coding block and the second segment comprises a second set of the plurality of pixels of the first video coding block.

公开(公告)号：US20210014484A1

公开(公告)日：2021-01-14

申请号：US17037550

申请日：2020-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/189 ,  H04N19/176

Abstract: The disclosure relates to a decoder for reconstructing a current block of an encoded picture, the decoder comprising processing circuitry configured to generate a most probable modes (MPM) candidates list for the current block, the MPM candidates list comprising four or more elements, wherein the first four elements of the MPM candidates list are, in this order, an intra-prediction mode associated with a left neighboring block of the current block, an intra-prediction mode associated with a top neighboring block of the current block, a planar mode, and an intra-prediction mode associated with a top-left neighboring block of the current block, prune the MPM candidates list, thereby generating an MPM list, and intra-predict the current block based on the MPM list. A higher compression ratio can thus be achieved.

公开(公告)号：US10856006B2

公开(公告)日：2020-12-01

申请号：US16730735

申请日：2019-12-30

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/523 ,  H04N19/105 ,  H04N19/139 ,  H04N19/513 ,  H04N19/533 ,  H04N19/56 ,  H04N19/573 ,  H04N19/109 ,  H04N19/577

Abstract: A method and system for motion vector refinement in a search space for multi-reference inter-prediction are provided. Two or more reference pictures are selected, one of those used for motion vector refinement. Based on an initial estimate of a motion vector to the reference picture for motion vector refinement, a search space in this reference image is constructed. Using template matching, the first motion vector is refined. The second motion vector to another reference picture is calculated using its initial estimate, the initial estimate of the first motion vector and the refined first motion vector. The search spaces used in template matching in different iterations overlap.

公开(公告)号：US20250016354A1

公开(公告)日：2025-01-09

申请号：US18777829

申请日：2024-07-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/513 ,  H04N19/57

Abstract: The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector and includes one or more fractional sample positions, wherein each of the fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.

公开(公告)号：US11968363B2

公开(公告)日：2024-04-23

申请号：US17682893

申请日：2022-02-28

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/96

Abstract: The present disclosure provides apparatuses and methods for splitting an image into coding units. An image is divided into coding tree units (CTUs) which are hierarchically partitioned. Hierarchical partitioning includes multi-type partitioning such as binary tree or quad tree splitting. For CTUs completely within the image and CTUs on the boundary, respective multi-type partition depths are chosen. The present disclosure provides for multi-type partitioning flexibility in a boundary portion of the image.

公开(公告)号：US11909978B2

公开(公告)日：2024-02-20

申请号：US17586116

申请日：2022-01-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/82 ,  H04N19/132

CPC classification number: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: A deblocking filter of an image processing device is provided. The deblocking filter is used in an image coding process, for deblocking a block edge between a first coding block and a second coding block of an image. The first block has SA samples perpendicular to the block edge by N samples parallel to the block edge, and the second block has SB samples perpendicular to the block edge by N samples parallel to the block edge. No more than IA samples of the first coding block are used as first filter input values, and no more than IB samples of the second coding block are used as second filter input values. No more than MA samples of the first coding block are modified as first filter output values, and no more than MB samples of the second coding block are modified as second filter output values.

公开(公告)号：US11870986B2

公开(公告)日：2024-01-09

申请号：US18071578

申请日：2022-11-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/96

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：US20230388493A1

公开(公告)日：2023-11-30

申请号：US18450229

申请日：2023-08-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Semih Esenlik ,  Anand Meher Kotra ,  Zhijie Zhao ,  Jianle Chen

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/169 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/1887 ,  H04N19/82

Abstract: An apparatus and a method for filtering reconstructed images, in particular, video images, with adaptive multiplicative filters. The efficiency of the filtering operation is increased by restricting the allowable values of the filter coefficients to those that have only a limited number of “ones” in the binary representation.

公开(公告)号：US11683520B2

公开(公告)日：2023-06-20

申请号：US17506403

申请日：2021-10-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Semih Esenlik ,  Anand Meher Kotra ,  Zhijie Zhao

IPC: H04N19/523 ,  H04N19/105 ,  H04N19/139 ,  H04N19/513 ,  H04N19/533 ,  H04N19/56 ,  H04N19/573 ,  H04N19/109 ,  H04N19/577

CPC classification number: H04N19/523 ,  H04N19/105 ,  H04N19/139 ,  H04N19/513 ,  H04N19/533 ,  H04N19/56 ,  H04N19/573 ,  H04N19/109 ,  H04N19/577

Abstract: The present invention relates to the performance of motion vector refinement in a search space for multi-reference inter-prediction. Two or more reference pictures are selected, one of those used for motion vector refinement. Based on an initial estimate of a motion vector to the reference picture for motion vector refinement, a search space in this reference image is constructed. Using template matching, the first motion vector is refined. The second motion vector to another reference picture is calculated using its initial estimate, the initial estimate of the first motion vector and the refined first motion vector.

公开(公告)号：US11582477B2

公开(公告)日：2023-02-14

申请号：US17849405

申请日：2022-06-24

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/513 ,  H04N19/57

Abstract: The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector and includes one or more fractional sample positions, wherein each of fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.