公开(公告)号：US20230283807A1

公开(公告)日：2023-09-07

申请号：US18315785

申请日：2023-05-11

Applicant: TENCENT AMERICA LLC

Inventor： Meng XU ,  Xiang Li ,  Shan LIU

IPC: H04N19/70 ,  H04N19/44 ,  H04N19/176 ,  H04N19/105 ,  H04N19/139

CPC classification number: H04N19/70 ,  H04N19/44 ,  H04N19/176 ,  H04N19/105 ,  H04N19/139

Abstract: A method of video encoding includes determining a first maximum allowed number of triangular prediction mode (TPM) candidates of a TPM applied to a first set of coding blocks, and constructing a TPM candidate list of a current coding block within the first set of coding blocks processed with the TPM according to the determined first maximum allowed number of TPM candidates. The method also includes generating a coded bitstream including the current coding block encoded according to the constructed TPM candidate list and including a first syntax element indicating the first maximum allowed number of TPM candidates.

公开(公告)号：US20210092456A1

公开(公告)日：2021-03-25

申请号：US17118240

申请日：2020-12-10

Applicant: TENCENT AMERICA LLC

Inventor： Meng XU ,  Xiang LI ,  Shan LIU

IPC: H04N19/70 ,  H04N19/503 ,  H04N19/176 ,  H04N19/119

Abstract: An apparatus for video decoding includes processing circuitry configured to receive a split direction syntax element, a first index syntax element, and a second index syntax element that are associated with a coding block coded with a triangular prediction mode. The coding block can be partitioned into two triangular prediction units according to a split direction indicated by the split direction syntax element. The first and second index syntax elements can indicate a first merge index and a second merge index to a merge candidate list constructed for the two triangular prediction units. The coding block can be reconstructed according to the split direction, the first merge index, and second merge index.

公开(公告)号：US20200221118A1

公开(公告)日：2020-07-09

申请号：US16821833

申请日：2020-03-17

Applicant: Tencent America LLC

Inventor： Meng XU ,  Xiang Li ,  Shan Liu

IPC: H04N19/52 ,  H04N19/103 ,  H04N19/169 ,  H04N19/132 ,  H04N19/124

Abstract: In a method for video decoding in a decoder, a first motion vector and a second motion vector for a first block in a current picture are received. The first motion vector is indicative of a first reference block in a first picture, and the second motion vector is indicative of a second reference block in a second picture. A bilateral template is generated based on a weighted combination of the first reference block and the second reference block. A refined first motion vector and a refined second motion vector are determined based on the bilateral template, reference blocks in the first picture and reference blocks in the second picture respectively. An initial motion vector of a second block that is coded after the first block is determined according to at least one of the first motion vector and the second motion vector for the first block.

公开(公告)号：US20200221100A1

公开(公告)日：2020-07-09

申请号：US16737183

申请日：2020-01-08

Applicant: TENCENT AMERICA LLC

Inventor： Meng XU ,  Xiang LI ,  Xiaozhong XU ,  Guichun LI ,  Shan LIU

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/139 ,  H04N19/105 ,  H04N19/117

Abstract: A method of video decoding performed in a video decoder includes receiving a coded video bitstream including a current picture. The method further includes determining whether a block size of an inter coded current block in the current picture is below a block size threshold. The method further includes, in response to determining that the current block is below the block size threshold, determining whether the inter coded current block is associated with a fractional motion vector (MV). The method further includes in response to determining that the inter coded current block is associated with a fractional MV, retrieving one or more reference samples in accordance with a reference sample reduction process. The method further includes decoding the current block based on the retrieved one or more reference samples.

公开(公告)号：US20200213622A1

公开(公告)日：2020-07-02

申请号：US16534026

申请日：2019-08-07

Applicant: TENCENT AMERICA LLC

Inventor： Meng XU ,  Xiang LI ,  Shan LIU

IPC: H04N19/70 ,  H04N19/44 ,  H04N19/139 ,  H04N19/105 ,  H04N19/176

Abstract: In a method of video decoding in a decoder, a merge candidate list of a current coding block is constructed for processing the current coding block with a triangular prediction mode (TPM). The merge candidate list can include merge candidates each having one or two motion vectors. Each motion vector can be associated with a first reference picture list or a second reference picture list. A first motion vector and a second motion vector are determined from the motion vectors of the merge candidates on the merge candidate list. The current block is processed with the TPM with the first and second motion vectors as two motion vector predictors (MVPs) of two triangular partitions of the current coding block.

公开(公告)号：US20200213596A1

公开(公告)日：2020-07-02

申请号：US16710899

申请日：2019-12-11

Applicant: Tencent America LLC

Inventor： Meng XU ,  Xiang LI ,  Xiaozhong XU ,  Shan LIU

IPC: H04N19/149 ,  H04N19/70 ,  H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/176

Abstract: A method of video decoding performed in a video decoder is provided. In the method, a bit stream including coded bits of bins of syntax elements is received. The syntax elements correspond to residues of a region of a transform skipped block in a coded picture. Context modeling is performed to determine a context model for each of a number of the bins of syntax elements of the region. The number of the bins of syntax elements that are context coded does not exceed a maximum number of context coded bins set for the region. The coded bits of the number of the bins of syntax elements are decoded based on the determined context models.

公开(公告)号：US20200053371A1

公开(公告)日：2020-02-13

申请号：US16660598

申请日：2019-10-22

Applicant: Tencent America LLC

Inventor： Xiaozhong XU ,  Shan LIU ,  Meng XU ,  Xiang LI ,  Stephan WENGER

IPC: H04N19/423 ,  H04N19/513 ,  H04N19/132 ,  H04N19/44 ,  H04N19/172 ,  H04N19/139

Abstract: Aspects of the disclosure provide method and apparatus for video coding. In some examples, an apparatus includes processing circuitry. The processing circuitry decodes a first portion of video data to obtain first data of a first reconstructed picture, the first data including a first data set that corresponds to a first information category and a second data set that corresponds to a second information category. The processing circuitry determines whether to store at least one of the first data set and the second data set as reference data, and stores the at least one of the first data set and the second data set of the first reconstructed picture as the reference data based on the determination. The processing circuitry also decodes a second portion of the video data to obtain second data of a second reconstructed picture based on the stored reference data.

公开(公告)号：US20200021810A1

公开(公告)日：2020-01-16

申请号：US16218233

申请日：2018-12-12

Applicant: Tencent America LLC

Inventor： Xiang LI ,  Xin ZHAO ,  Shan LIU ,  Meng XU

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/119 ,  H04N19/105 ,  H04N19/176

Abstract: Aspects of the disclosure provide a method and an apparatus for video coding. In some embodiments, the apparatus includes processing circuitry. The processing circuitry decodes encoding information associated with a block of a picture in a coded video bitstream. The encoding information indicates a position of a sub-region in the block, and an area of the sub-region is ¼ of an area of the block. The processing circuitry further reconstructs first samples of the block that are inside the sub-region using residual data of the first samples, and reconstructs second samples of the block that are outside of the sub-region without residue data.

公开(公告)号：US20210392338A1

公开(公告)日：2021-12-16

申请号：US17446097

申请日：2021-08-26

Applicant: TENCENT AMERICA LLC

Inventor： Meng XU ,  Xiang LI ,  Xiaozhong XU ,  Shan LIU

IPC: H04N19/149 ,  H04N19/70 ,  H04N19/176 ,  H04N19/117 ,  H04N19/119 ,  H04N19/105

Abstract: A method of video decoding performed in a video decoder is provided. In the method, a bit stream including coded bits of bins of syntax elements is received. The syntax elements correspond to residues of a region of a transform skipped block in a coded picture. Context modeling is performed to determine a context model for each of a number of the bins of syntax elements of the region. The number of the bins of syntax elements that are context coded does not exceed a maximum number of context coded bins set for the region. The coded bits of the number of the bins of syntax elements are decoded based on the determined context models.

公开(公告)号：US20200112735A1

公开(公告)日：2020-04-09

申请号：US16567718

申请日：2019-09-11

Applicant: Tencent America LLC

Inventor： Meng XU ,  Xiang LI ,  Shan LIU

IPC: H04N19/44 ,  H04N19/132 ,  H04N19/96 ,  H04N19/176

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes receiving circuitry and processing circuitry. The processing circuitry decodes partition information of a block in a picture from a coded video bitstream. The partition information is indicative of a partition tree structure for a partition of the block into coding blocks. Then, the processing circuitry groups to-be reconstructed samples of the block into processing groups according to the partition of the block into the coding blocks. A shape of a combined region of a processing group is limited by constraints in the partition of the block into the coding blocks. Then, the processing circuitry reconstructs the to-be reconstructed samples of the block by multiple pipeline stages that process the processing groups in a pipeline processing manner.