公开(公告)号：US11902537B2

公开(公告)日：2024-02-13

申请号：US17837867

申请日：2022-06-10

Applicant: Lemon Inc.

Inventor： Yang Wang ,  Kai Zhang ,  Li Zhang ,  Yuwen He ,  Hongbin Liu

IPC: H04N19/159 ,  H04N19/70 ,  H04N19/176 ,  H04N19/147

CPC classification number: H04N19/159 ,  H04N19/147 ,  H04N19/176 ,  H04N19/70

Abstract: Example implementations include a method, apparatus and computer-readable medium of video processing, including constructing, during a conversion between a current video block of a video and a bitstream of the video, at least one template set for the current video block from a plurality of sub-templates. The one or more sub-templates may be selected from a plurality of sub-templates including: a left sub-template, an above sub-template, a right-above sub-template, a left-below sub-template, and a left-above sub-template. The implementations further include deriving at least one intra-prediction mode (IPM) based on cost calculations. The implementations include determining, based on the at least one IPM, a final predictor of the current video block. The implementations include performing the conversion based on the final predictor.

公开(公告)号：US11582460B2

公开(公告)日：2023-02-14

申请号：US17148533

申请日：2021-01-13

Applicant: Lemon Inc.

Inventor： Yang Wang ,  Kai Zhang ,  Li Zhang ,  Yuwen He ,  Hongbin Liu

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/146 ,  H04N19/132 ,  H04N19/159

Abstract: Aspects of the present disclosure provide techniques for derive one or more intra prediction modes (IPMs) from a subset of IPM candidates in order to determine a predictor to use for decoding a block of an image. In some aspects, the subset of IPM candidates may include IPMs that are less than the number of IPMs in a full set of all available IPM candidates (e.g., 67 IPMs in VVC or 35 in HEVC). In some aspects, the subset of IPM candidates may be based on a most probable mode (MPM) list that can be used to determine or signal an IPM based on IPMs previously used in decoding other blocks.

公开(公告)号：US11563957B2

公开(公告)日：2023-01-24

申请号：US17148538

申请日：2021-01-13

Applicant: Lemon Inc.

Inventor： Yang Wang ,  Kai Zhang ,  Li Zhang ,  Yuwen He ,  Hongbin Liu

IPC: H04N19/189 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/159 ,  H04N19/186

Abstract: Example implementations include a method and of video processing, comprising determining, during a conversion between a current video unit of a video and a bitstream of the video, to apply a prediction mode derivation tool to the current video unit, wherein in the prediction mode derivation tool, at least one intra prediction mode (IPM) is derived for the current video unit based on cost calculations between reconstructed samples and prediction samples of a template region related the current video unit. The implementations further include performing the conversion based on the determining.

公开(公告)号：US11388421B1

公开(公告)日：2022-07-12

申请号：US17148383

申请日：2021-01-13

Applicant: Lemon Inc.

Inventor： Yang Wang ,  Kai Zhang ,  Li Zhang ,  Yuwen He ,  Hongbin Liu

IPC: H04N19/159 ,  H04N19/70 ,  H04N19/176 ,  H04N19/147

Abstract: Example implementations include a method, apparatus and computer-readable medium of video processing, including constructing, during a conversion between a current video block of a video and a bitstream of the video, at least one template set for the current video block from a plurality of sub-templates. The one or more sub-templates may be selected from a plurality of sub-templates including: a left sub-template, an above sub-template, a right-above sub-template, a left-below sub-template, and a left-above sub-template. The implementations further include deriving at least one intra-prediction mode (IPM) based on cost calculations. The implementations include determining, based on the at least one IPM, a final predictor of the current video block. The implementations include performing the conversion based on the final predictor.

公开(公告)号：US11889097B2

公开(公告)日：2024-01-30

申请号：US17673660

申请日：2022-02-16

Applicant: Lemon Inc.

Inventor： Yang Wang ,  Kai Zhang ,  Li Zhang ,  Yuwen He ,  Hongbin Liu

IPC: H04N19/70 ,  H04N19/50

CPC classification number: H04N19/50 ,  H04N19/70

Abstract: Aspects include a method, apparatus and computer-readable medium of decoding video or blocks of an image, including receiving a bitstream of the image, deriving, for a block of the image in the bitstream, multiple intra-prediction modes (IPMs) to use in decoding the block, determining, based on the multiple IPMs, a final predictor to use in decoding the block, and decoding the block using the final predictor. Other aspects include method, apparatus and computer-readable medium for similarly encoding video or blocks of an image.

公开(公告)号：US11290736B1

公开(公告)日：2022-03-29

申请号：US17148356

申请日：2021-01-13

Applicant: Lemon Inc.

Inventor： Yang Wang ,  Kai Zhang ,  Li Zhang ,  Yuwen He ,  Hongbin Liu

IPC: H04N19/50 ,  H04N19/70

Abstract: Aspects include a method, apparatus and computer-readable medium of decoding video or blocks of an image, including receiving a bitstream of the image, deriving, for a block of the image in the bitstream, multiple intra-prediction modes (IPMs) to use in decoding the block, determining, based on the multiple IPMs, a final predictor to use in decoding the block, and decoding the block using the final predictor. Other aspects include method, apparatus and computer-readable medium for similarly encoding video or blocks of an image.