知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

105 records (took 0.025 seconds)

    PERFORMING CHROMA DEBLOCKING FOR BLOCKS WHICH USE JOINT CHROMA CODING
    42.
    发明申请
    PERFORMING CHROMA DEBLOCKING FOR BLOCKS WHICH USE JOINT CHROMA CODING 有权

    公开(公告)号：US20220191496A1

    公开(公告)日：2022-06-16

    申请号：US17686585

    申请日：2022-03-04

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/124 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186

    Abstract: A method for deblocking a chroma block edge between a first chroma block of a first image block and a second chroma block of a second image block. The method includes a decision process which includes: determining a first chroma quantization parameter for the first chroma block based on a first luma quantization parameter of a first luma block of the first image block and a chroma QP mapping table for the first chroma block; determining a second chroma quantization parameter for the second chroma block based on a second luma quantization parameter of a second luma block of the second image block and a chroma QP mapping table for the second chroma block; determining an averaged and rounded chroma quantization parameter based on the first chroma quantization parameter and the second chroma quantization parameter; and determining a threshold parameter based on the averaged and rounded chroma quantization parameter.

    ENCODER, A DECODER AND CORRESPONDING METHODS OF SIGNALING AND SEMANTICS IN PARAMETER SETS
    43.
    发明申请
    ENCODER, A DECODER AND CORRESPONDING METHODS OF SIGNALING AND SEMANTICS IN PARAMETER SETS 有权

    公开(公告)号：US20220182649A1

    公开(公告)日：2022-06-09

    申请号：US17681003

    申请日：2022-02-25

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/31 ,  H04N19/70 ,  H04N19/136 ,  H04N19/187

    Abstract: Signalling of syntax elements in a sequence parameter set of a video bitstream is addressed. Particularly, it is provided a method of decoding a video bitstream wherein a sequence parameter set, SPS, is coded that contains syntax elements that apply to a video sequence, the method comprising obtaining a value of a first syntax element from the SPS used to specify whether a decoded picture buffer, DPB, parameters syntax structure is present in the SPS and obtaining a value of a second syntax element from the SPS, at least when determining that the value of the first syntax element specifies that the DPB parameters syntax structure is present in the SPS, used to specify the presence of a DPB syntax element in the DPB parameters syntax structure, wherein the DPB syntax element is applied to a temporal sublayer except for the highest temporal sublayer in the video sequence.

    ENCODER, A DECODER AND CORRESPONDING METHODS RELATED TO INTRA PREDICTION MODE
    44.
    发明申请
    ENCODER, A DECODER AND CORRESPONDING METHODS RELATED TO INTRA PREDICTION MODE 有权

    公开(公告)号：US20220007034A1

    公开(公告)日：2022-01-06

    申请号：US17478534

    申请日：2021-09-17

    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

    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 postion (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 a Matrix-based Intra Prediction (MIP) is applied for the luma component at the luma position (cbWidth/2, cbHeight/2), relative to the top-left luma sample postion (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.

    SEARCH REGION FOR MOTION VECTOR REFINEMENT
    47.
    发明申请
    SEARCH REGION FOR MOTION VECTOR REFINEMENT 有权

    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.

    ENCODER, A DECODER AND CORRESPONDING METHODS FOR MERGE MODE
    48.
    发明申请
    ENCODER, A DECODER AND CORRESPONDING METHODS FOR MERGE MODE 有权

    公开(公告)号：US20210274168A1

    公开(公告)日：2021-09-02

    申请号：US17324401

    申请日：2021-05-19

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04N19/107 ,  H04N19/119 ,  H04N19/176

    Abstract: The present disclosure provides methods and devices of processing a block according to a merge candidate list, the method comprising: constructing a first list according to motion information of neighboring blocks of a current block; obtaining prediction information of the current block; when the prediction information of the current block indicates that a sub-block prediction is applied to the current block, obtaining a uni-prediction candidate for the current block according to the first list; using, the uni-prediction candidate for the current block to perform inter prediction of the current block. According to embodiment of the present disclosure, the regular merge list can be directly used and there is no need to explicitly generate the uni-prediction merge candidate list for sub-block prediction.

    METHOD AND APPARATUS FOR INTRA PREDICTION
    50.
    发明申请
    METHOD AND APPARATUS FOR INTRA PREDICTION 审中-公开

    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.

Patent Agency Ranking