中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

78 records (took 0.024 seconds)

    PREDICTOR CANDIDATES FOR MOTION COMPENSATION
    1.
    发明公开
    PREDICTOR CANDIDATES FOR MOTION COMPENSATION 审中-公开

    公开(公告)号：US20240073439A1

    公开(公告)日：2024-02-29

    申请号：US18373645

    申请日：2023-09-27

    Applicant: InterDigital VC Holdings, Inc.

    Inventor： Tangi POIRIER ,  Antoine ROBERT ,  Fabrice LELEANNEC

    IPC: H04N19/52 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56 ,  H04N19/567

    CPC classification number: H04N19/52 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56 ,  H04N19/567

    Abstract: Different implementations are described, particularly implementations for determining a set of predictor candidates for affine merge coding mode from neighboring blocks for motion compensation of a picture block based on a motion model. The motion model, may be, e.g., an affine model in a merge mode or AMVP mode for a video content encoder or decoder. The motion model, may be, e.g., an affine model based on top-left/top-right control point motion vectors or an affine model based on top-left/botton-left control point motion vectors. Such affine model may be signaled by a flag. In an embodiment, predictor candidates are sorted in the set based on a criterion such as, e.g., a validity check or a vectors coherence cost. In an embodiment, a predictor candidate is selected from the set based on a motion model for each of the multiple predictor candidates, and may be based on a criterion such as, e.g., a rate distortion cost. The corresponding motion field is determined based on, e.g., one or more corresponding control point motion vectors for the block being encoded or decoded. The corresponding motion field of an embodiment identifies motion vectors used for prediction of sub-blocks of the block being encoded or decoded.

    DATA DEPENDENCY IN ENCODING/DECODING
    2.
    发明申请
    DATA DEPENDENCY IN ENCODING/DECODING 有权

    公开(公告)号：US20230097304A1

    公开(公告)日：2023-03-30

    申请号：US18077342

    申请日：2022-12-08

    Applicant: INTERDIGITAL VC HOLDINGS, INC.

    Inventor： Antoine ROBERT ,  Fabrice LELEANNEC ,  Franck GALPIN

    IPC: H04N19/513 ,  H04N19/70 ,  H04N19/176 ,  H04N19/96

    Abstract: A video encoder or decoder processes portions of video with less delay when its processes are parallelized and avoids delays caused by dependence on the completion of prior processes. In one embodiment, a motion vector predictor from a neighboring block of video is used in a subsequent later block of video before it is finished being refined for use in the neighboring block. In another embodiment, information from a neighboring block is confined to include blocks in the same coding tree unit. In another embodiment, a motion vector predictor is checked to see whether it is already in a list of candidates before adding it to the list to expedite the process.

    MULTIPLE PREDICTOR CANDIDATES FOR MOTION COMPENSATION
    5.
    发明申请
    MULTIPLE PREDICTOR CANDIDATES FOR MOTION COMPENSATION 有权

    公开(公告)号：US20220116654A1

    公开(公告)日：2022-04-14

    申请号：US17557179

    申请日：2021-12-21

    Applicant: InterDigital VC Holdings, Inc.

    Inventor： Antoine ROBERT ,  Fabrice LELEANNEC ,  Tangi POIRIER

    IPC: H04N19/513 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/52

    Abstract: Different implementations are described, particularly implementations for selecting a predictor candidate from a set of multiple predictor candidates for motion compensation of a picture block based on a motion model. The motion model, may be, e.g., an affine model in a merge mode for a video content encoder or decoder. In an embodiment, a predictor candidate is selected from the set based on a motion model for each of the multiple predictor candidates, and may be based on a criterion such as, e.g., a rate distortion cost. The corresponding motion field is determined based on, e.g., one or more corresponding control point motion vectors for the block being encoded or decoded. The corresponding motion field of an embodiment identifies motion vectors used for prediction of sub-blocks of the block being encoded or decoded.

    METHOD AND APPARATUS FOR SELECTING A CODING MODE USED FOR ENCODING/DECODING A RESIDUAL BLOCK
    6.
    发明申请
    METHOD AND APPARATUS FOR SELECTING A CODING MODE USED FOR ENCODING/DECODING A RESIDUAL BLOCK 有权

    公开(公告)号：US20210400271A1

    公开(公告)日：2021-12-23

    申请号：US17378649

    申请日：2021-07-16

    Applicant: INTERDIGITAL VC HOLDINGS, INC.

    Inventor： Fabrice URBAN ,  Tangi POIRIER ,  Fabrice LELEANNEC

    IPC: H04N19/12 ,  H04N19/105 ,  H04N19/176 ,  H04N19/60

    Abstract: The present principles relate to a method and device. A method for encoding a residual block comprises: obtaining (500) a first coding mode relative to a first 2D transform when coding the residual blocks according to a coding mode relative to a first 2D transform is enabled; obtaining (510) a second coding mode relative to a second 2D transform when coding the residual blocks according to a coding mode relative to a second 2D transform is enabled; and encoding (530) the residual block according to either said first coding mode or said second coding mode or both; the method is characterized in that enabling or disabling (520) the coding of the residual block according to said second coding mode depends on said first coding mode. The present principles relate also to a method and device for encoding/decoding a picture.

    METHOD AND APPARATUS FOR ENCODING A VIDEO
    10.
    发明申请
    METHOD AND APPARATUS FOR ENCODING A VIDEO 审中-公开

    公开(公告)号：US20200014915A1

    公开(公告)日：2020-01-09

    申请号：US16340127

    申请日：2017-08-31

    Applicant: INTERDIGITAL VC HOLDINGS, INC.

    Inventor： Fabrice URBAN ,  Tangi POIRIER ,  Fabrice LELEANNEC

    IPC: H04N19/103 ,  H04N19/147 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46

    Abstract: A method and an apparatus for encoding a video are disclosed. For at least one block from a picture of said video, a first rate-distortion optimization is performed (602) for determining for a first splitting mode of said block into at least one first subblock, coding parameters of said at least one first subblock. At least one second rate-distortion optimization is performed (609) for determining for at least one second splitting mode of said block into at least one second subblock, coding parameters of said at least one second subblock. A best splitting mode for coding said block is determined (613) according to at least said first rate-distortion optimization and said second rate-distortion optimization, and said block is encoded (616) according to said best splitting mode. While performing (609) said at least one second rate-distortion optimization and when said at least one second subblock is located at a same position in the picture as said at least one first subblock and said at least one second subblock has a same width and same height as said at least one first subblock, at least one coding parameter of said at least one first subblock determined during said first rate-distortion optimization is used (605) for determining said coding parameters for said at least one second subblock.

Patent Agency Ranking