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    Motion vector prediction with motion information collecting buffer
    13.
    发明授权
    Motion vector prediction with motion information collecting buffer 有权

    公开(公告)号：US11528504B2

    公开(公告)日：2022-12-13

    申请号：US16924884

    申请日：2020-07-09

    Applicant: QUALCOMM Incorporated

    Inventor： Dmytro Rusanovskyy ,  Yan Zhang

    IPC: H04N19/52 ,  H04N19/176 ,  H04N19/59

    Abstract: An example device for coding video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: determine that a size of a current block of the video data is less than a threshold, the current block being a two-dimensional array of samples representing a portion of a picture; determine a set of motion vector prediction candidates for the current block according to the determination that the size of the current block is less than the threshold; select a motion vector predictor of the motion vector prediction candidates for the current block; code motion information of the current block using the motion vector predictor; and code the current block using the motion information.

    DYNAMIC RANGE ADJUSTMENT PARAMETER SIGNALING AND ENABLEMENT OF VARIABLE BIT DEPTH SUPPORT
    15.
    发明申请
    DYNAMIC RANGE ADJUSTMENT PARAMETER SIGNALING AND ENABLEMENT OF VARIABLE BIT DEPTH SUPPORT 有权

    公开(公告)号：US20210329304A1

    公开(公告)日：2021-10-21

    申请号：US17225801

    申请日：2021-04-08

    Applicant: QUALCOMM Incorporated

    Inventor： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian ,  Yan Zhang ,  Marta Karczewicz

    IPC: H04N19/70 ,  H04N19/172 ,  H04N19/169

    Abstract: An example device for processing video data includes memory configured to store the video data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors are configured to parse a first parameter set, the first parameter set being signaled in a bitstream data once per sequence of a group of encoded pictures. The one or more processors are configured to parse one or more dynamic range adjustment (DRA) syntax elements in a second parameter set, the second parameter set being signaled in the bitstream and being related to at least one picture in the group of encoded pictures, wherein the parsing of the one or more DRA syntax elements is not dependent on any syntax element of the first parameter set, and process the at least one picture based on the first parameter set and the second parameter set.

    METHODS FOR QUANTIZATION PARAMETER CONTROL FOR VIDEO CODING WITH JOINED PIXEL/TRANSFORM BASED QUANTIZATION
    17.
    发明申请
    METHODS FOR QUANTIZATION PARAMETER CONTROL FOR VIDEO CODING WITH JOINED PIXEL/TRANSFORM BASED QUANTIZATION 有权

    公开(公告)号：US20210281844A1

    公开(公告)日：2021-09-09

    申请号：US17192335

    申请日：2021-03-04

    Applicant: QUALCOMM Incorporated

    Inventor： Dmytro Rusanovskyy ,  Yan Zhang

    IPC: H04N19/124 ,  H04N19/186 ,  H04N19/70

    Abstract: An example device for processing video data includes memory configured to store the video data and one or more processors coupled to the memory. The one or more processors are configured to adjust a chroma dynamic range adjustment (DRA) scale value based on a luma DRA scale value and determine a chroma quantization parameter (QP) based on the luma adjusted chroma DRA scale value, wherein the chroma QP comprises an integer component and a fractional component. The one or more processors are configured to determine an integer chroma QP offset based on the integer component and determine a fractional chroma QP offset based on the fractional component. The one or more processors are configured to determine a DRA chroma scale adjustment value based on the integer chroma QP offset and the fractional chroma QP offset and process the video data based on the DRA chroma scale adjustment value.

    USING SUBSTITUTE MOTION INFORMATION WHEN CODING VIDEO DATA
    18.
    发明申请
    USING SUBSTITUTE MOTION INFORMATION WHEN CODING VIDEO DATA 有权

    公开(公告)号：US20240430484A1

    公开(公告)日：2024-12-26

    申请号：US18748939

    申请日：2024-06-20

    Applicant: QUALCOMM Incorporated

    Inventor： Hongtao Wang ,  Han Huang ,  Vadim Seregin ,  Nan Hu ,  Yan Zhang ,  Marta Karczewicz

    IPC: H04N19/70 ,  H04N19/117 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/86

    Abstract: An example device for decoding video data includes a memory configured to store video data; and a processing system including one or more processors implemented in circuitry, the processing system being configured to: determine that a previously coded block of video data was coded using uni-prediction mode for which a bi-prediction syntax element is not assigned a value; determine that a current block of the video data is to be coded using a bi-prediction mode and that motion information of the current block is to be predicted from the previously coded block, including from the bi-prediction syntax element of the previously coded block; and in response to the bi-prediction syntax element of the previously coded block not having an assigned value, decode the current block using a substitute value for the bi-prediction syntax element.

    CODING VIDEO DATA USING ADAPTIVE AFFINE BLOCK PREDICTION
    20.
    发明公开
    CODING VIDEO DATA USING ADAPTIVE AFFINE BLOCK PREDICTION 审中-公开

    公开(公告)号：US20240129525A1

    公开(公告)日：2024-04-18

    申请号：US18481055

    申请日：2023-10-04

    Applicant: QUALCOMM Incorporated

    Inventor： Zhi Zhang ,  Han Huang ,  Yan Zhang ,  Patrick Garus ,  Vadim Seregin ,  Marta Karczewicz

    IPC: H04N19/583 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

    CPC classification number: H04N19/583 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

    Abstract: An example device for decoding video data includes: a memory configured to store video data; and a processing system comprising one or more processors implemented in circuitry, the processing system being configured to: determine whether motion information of a block of video data is for sub-blocks of the block larger than individual pixels of the block or for the individual pixels, the block being associated with data indicating that the block is to be predicted using affine motion compensation; in response to determining that the motion information of the block is for the sub-blocks, perform sub-block-based affine motion compensation to form a prediction block for the block; in response to determining that the motion information is for the individual pixels, perform pixel-based affine motion compensation to form the prediction block for the block; and decode the block using the prediction block.

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