公开(公告)号：US20210314604A1

公开(公告)日：2021-10-07

申请号：US17349557

申请日：2021-06-16

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/56 ,  H04N19/513 ,  H04N19/55

Abstract: The embodiments disclosed herein relate to the construction of a search space for determining a motion vector for a current block of a picture in a video sequence. The search space construction is split into in two main stages, wherein a first and a second partial search space are respectively determined. Based on an initial estimate of a motion vector, a first search space is first constructed. A first and a second candidate motion of the first search space are identified according to a cost function. Based on the first and the second candidate motion vectors, a second search space is constructed. The motion vector for the current block is selected from the candidate motion vectors of the first search space and the second search space.

公开(公告)号：US20210084299A1

公开(公告)日：2021-03-18

申请号：US17107318

申请日：2020-11-30

Applicant: Huawei Technologies Co., Ltd.

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

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

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：US20200382768A1

公开(公告)日：2020-12-03

申请号：US16947840

申请日：2020-08-19

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/169

Abstract: A method for constructing a most probable mode (MPM) list for prediction process corresponding to video block is provided. The method includes determining whether a left block of a current coding block is available, in response to determining that the left block of the current coding block is available, adding an intra prediction mode of the left block into an MPM list; determining whether an above block of the current coding block is available, in response to determining that the above block of the current coding block is available, adding an intra prediction mode of the above block into the MPM list; adding an offset to the prediction mode of the left block to obtain a new prediction mode; and adding the above-offset prediction mode into the MPM list when the above-offset prediction mode is not in the MPM list. The MPM list is used to improve coding efficiency.

公开(公告)号：US20200336745A1

公开(公告)日：2020-10-22

申请号：US16895653

申请日：2020-06-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhijie ZHAO ,  Bastian WANDT ,  Yiqun LIU ,  Thorsten LAUDE ,  Bodo ROSENHAHN ,  Joern OSTERMANN

IPC: H04N19/132 ,  H04N19/137 ,  H04N19/625 ,  H04N19/186 ,  H04N19/176

Abstract: The present disclosure relates to encoding and decoding video by employing texture coding. In particular, a texture region is identified within a video picture and a texture patch is determined for the texture region. Moreover, a first set of parameters is derived specifying weighting factors for reconstructing spectral coefficients of the texture region by fitting the texture region in a spectral domain to a first function of the texture patch, the first function being defined by the first set of parameters. The texture patch and the first set of parameters are then included into a bitstream which is output by an encoder and provided in this way to the decoder which reconstructs the texture based on the patch and the function applied to the patch.

公开(公告)号：US20200304797A1

公开(公告)日：2020-09-24

申请号：US16895575

申请日：2020-06-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhijie ZHAO ,  Bastian WANDT ,  Yiqun LIU ,  Thorsten LAUDE ,  Joern OSTERMANN ,  Bodo ROSENHAHN

IPC: H04N19/136 ,  H04N19/167 ,  H04N19/17

Abstract: A texture region is identified within a video picture, and a texture patch is determined for the region. Clustering is performed to identify a texture region within the video image. The clustering is further refined. In particular, one or more brightness parameters of a polynomial is determined by fitting the polynomial to the identified texture region. In the identified texture region, samples are detected with a distance to the fitted polynomial exceeding a first threshold. A refined texture region is identified as the texture region excluding one or more of the detected samples. The refined texture region is encoded separately from portions of the video image not belonging to the refined texture region.

公开(公告)号：US20200260119A1

公开(公告)日：2020-08-13

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 ,  H04N19/46 ,  H04N19/13 ,  H04N19/176

Abstract: The present disclosure relates to encoding and decoding of signal and syntax elements to/from a bitstream. In the encoding/decoding, semantics for the syntax elements is 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：US20200236351A1

公开(公告)日：2020-07-23

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 ,  H04N19/61 ,  H04N19/503 ,  H04N19/176

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：US20190356930A1

公开(公告)日：2019-11-21

申请号：US16531898

申请日：2019-08-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher KOTRA ,  Semih ESENLIK ,  Zhijie ZHAO

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: A system and method for processing a video stream are provided. When coding or decoding a video stream a de-blocking filtering may be applied for reducing discontinuities caused by use of a block-based video coding. The de-blocking filtering is performed using a filter grid. The size of the filter grid is chosen adaptively based on the processing parameters. The adaptive size of the filtering grid is determined based on the number of samples used and modified in de-blocking filtering of an edge of a coding block. The filtering grid may be used both for vertical and horizontal edge filtering.

公开(公告)号：US20190124361A1

公开(公告)日：2019-04-25

申请号：US16220699

申请日：2018-12-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhijie ZHAO ,  Jens SCHNEIDER ,  Johannes SAUER ,  Mathias WIEN

IPC: H04N19/597 ,  H04N13/128 ,  H04N13/161 ,  H04N19/176

Abstract: The invention relates to an apparatus for decoding 3D video data, the 3D video data comprising a plurality of texture frames and a plurality of associated depth maps, the apparatus comprising: a first texture decoder configured to decode a video coding block of a first texture frame associated with a first view; a first depth map decoder configured to decode a video coding block of a first depth map associated with the first texture frame; a depth map filter configured to generate an auxiliary depth map on the basis of the first depth map; a first view synthesis prediction unit configured to generate a predicted video coding block of a view synthesis predicted second texture frame associated with a second view on the basis of the video coding block of the first texture frame and the auxiliary depth map.

公开(公告)号：US20190124355A1

公开(公告)日：2019-04-25

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 ,  H04N19/176 ,  H04N19/182 ,  H04N19/463 ,  H04N19/65

Abstract: The invention relates 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