知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

139 records (took 0.034 seconds)

    Method for coding image/video on basis of intra prediction and device therefor
    65.
    发明授权
    Method for coding image/video on basis of intra prediction and device therefor 有权

    公开(公告)号：US11632544B2

    公开(公告)日：2023-04-18

    申请号：US17703366

    申请日：2022-03-24

    Applicant: LG Electronics Inc.

    Inventor： Jin Heo ,  Sunmi Yoo ,  Ling Li ,  Jangwon Choi

    IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

    Abstract: An image decoding method according to the present disclosure comprises the steps of: obtaining intra prediction type related information for a current block from a bit stream; deriving the intra prediction type of the current block based on the intra prediction type-related information; obtaining intra prediction mode-related information for the current block from the bitstream; configuring a most probable mode (MPM) list including candidate intra prediction modes for the current block based on neighboring blocks of the current block; deriving the intra prediction mode of the current block based on the MPM list and the intra prediction mode-related information; and generating a predicted block of the current block based on the intra prediction type and the intra prediction mode, wherein when the intra prediction type indicates the particular intra prediction type, the MPM index is parsed from the bit stream without parsing of an MPM flag.

    Intra prediction-based image coding method and apparatus using MPM list
    66.
    发明授权
    Intra prediction-based image coding method and apparatus using MPM list 有权

    公开(公告)号：US11445175B2

    公开(公告)日：2022-09-13

    申请号：US16952259

    申请日：2020-11-19

    Applicant: LG ELECTRONICS INC.

    Inventor： Ling Li ,  Jin Heo ,  Seunghwan Kim

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

    Abstract: A video decoding method according to this document includes deriving a first candidate intra prediction mode based on a first neighboring block located on a left side of a current block, deriving a second candidate intra prediction mode based on a second neighboring block located on an upper side of the current block, constructing a most probable mode (MPM) list for the current block based on the first candidate intra prediction mode and the second candidate intra prediction mode, deriving an intra prediction mode for the current block based on the MPM list, generating predicted samples by performing prediction for the current block based on the intra prediction mode, and generating a reconstructed picture for the current block based on the predicted samples.

    Method and device for processing video signal for intra prediction
    67.
    发明授权
    Method and device for processing video signal for intra prediction 有权

    公开(公告)号：US11431969B2

    公开(公告)日：2022-08-30

    申请号：US17406528

    申请日：2021-08-19

    Applicant: LG Electronics Inc.

    Inventor： Jin Heo ,  Sunmi Yoo ,  Ling Li ,  Jangwon Choi ,  Jungah Choi

    IPC: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593

    Abstract: Embodiments of the present specification provide a method and a device for processing a video signal for intra prediction. A method for decoding a video signal according an embodiment of the present disclosure includes: obtaining intra prediction information of a current block to which the intra prediction is applied, in which the intra prediction information includes a first flag indicating a predetermined first mode; determining an intra prediction mode of the current block based on the intra prediction information, wherein when the first flag corresponds to a first value, the first mode is determined as the intra prediction mode and when the first flag corresponds to a second value, one of a plurality of candidate modes is determined as the intra prediction mode; and generating a prediction sample of the current block based on the intra prediction mode and a reference sample in a current picture. A separate flag indicating whether to use a primarily used specific mode is used to reduce a data amount for transmission of the intra prediction mode and a processing time of information of the intra prediction.

    METHOD FOR DECODING IMAGE ON BASIS OF CCLM PREDICTION IN IMAGE CODING SYSTEM, AND DEVICE THEREFOR
    68.
    发明申请
    METHOD FOR DECODING IMAGE ON BASIS OF CCLM PREDICTION IN IMAGE CODING SYSTEM, AND DEVICE THEREFOR 有权

    公开(公告)号：US20220248036A1

    公开(公告)日：2022-08-04

    申请号：US17719090

    申请日：2022-04-12

    Applicant: LG ELECTRONICS INC.

    Inventor： Jangwon CHOI ,  Jin Heo ,  Seunghwan Kim ,  Sunmi Yoo ,  Ling Li ,  Jungah Choi

    IPC: H04N19/186 ,  H04N19/105 ,  H04N19/136 ,  H04N19/176

    Abstract: A video decoding method performed by a decoding apparatus according to the present disclosure includes deriving one of a plurality of cross-component linear model (CCLM) prediction mode as a CCLM prediction mode of the current chroma block, deriving a sample number of neighboring chroma samples of the current chroma block based on the CCLM prediction mode of the current chroma block, a size of the current chroma block, and a specific value; deriving the neighboring chroma samples of the sample number, calculating CCLM parameters based on the neighboring chroma samples and the down sampled neighboring luma samples, deriving prediction samples for the current chroma block based on the CCLM parameters and the down sampled luma samples and generating reconstructed samples for the current chroma block based on the prediction samples, wherein the specific value is derived as 2.

Patent Agency Ranking