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    Classification for multiple merge tools
    11.
    发明授权
    Classification for multiple merge tools 有权

    公开(公告)号：US11178414B2

    公开(公告)日：2021-11-16

    申请号：US16802455

    申请日：2020-02-26

    Applicant: MediaTek Inc.

    Inventor： Man-Shu Chiang ,  Chun-Chia Chen ,  Chih-Wei Hsu ,  Chia-Ming Tsai

    IPC: H04N7/12 ,  H04N19/44 ,  H04N19/176 ,  H04N19/159 ,  H04N19/107 ,  H04N19/46 ,  H04N19/189

    Abstract: A video codec receives data to be encoded or decoded as a current block of a current picture of a video. first and/or second flags indicate whether to apply a first combined prediction mode or a second combined prediction mode. The video codec decodes or encodes the current block. When the combined inter and intra prediction mode is applied, the current block is coded by using a combined prediction that is generated based on an inter-prediction and an intra-prediction. When the triangle prediction mode is applied, the current block is coded by using a combined prediction that is generated based on at least two inter-predictions.

    Signaling of motion vector difference derivation
    13.
    发明授权
    Signaling of motion vector difference derivation 有权

    公开(公告)号：US11109064B2

    公开(公告)日：2021-08-31

    申请号：US16880344

    申请日：2020-05-21

    Applicant: MediaTek Inc.

    Inventor： Man-Shu Chiang ,  Chih-Wei Hsu ,  Tzu-Der Chuang

    IPC: H04N19/00 ,  H04N19/577 ,  H04N19/513 ,  H04N19/176

    Abstract: A video decoder receives data for a block of pixels to be decoded as a current block of a current picture of a video. When the current block is coded by using inter mode and bi-directional prediction, the video decoder receives a first motion vector difference and determines a second motion vector difference based on a first flag or a second flag. When the first flag is false, the video decoder uses the second flag to determine whether to set the second motion vector difference to be at an opposite value of the first motion vector difference. When the first flag is true, the video decoder sets the second motion vector difference to be zero. The video decoder reconstructs the current block by using motion information based on the first motion vector difference and the second motion vector difference to perform inter prediction.

    Interaction between core transform and secondary transform
    16.
    发明授权
    Interaction between core transform and secondary transform 有权

    公开(公告)号：US11616966B2

    公开(公告)日：2023-03-28

    申请号：US16836904

    申请日：2020-03-31

    Applicant: MediaTek Inc.

    Inventor： Man-Shu Chiang ,  Chih-Wei Hsu

    IPC: H04N19/46 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/625 ,  H04N19/159 ,  H04N19/132

    Abstract: A video decoder receives data from a bitstream for a block of pixels to be decoded as a current block of a current picture of a video. The video decoder receives from the bitstream first and second signaled indices for the current block. The video decoder determines first and second merge indices from the first and second signaled indices. The video decoder uses the first and second merge indices to select first and second motion candidates, respectively. The video decoder generates a set of prediction samples in ALWIP mode and performs an inverse secondary transform and an inverse primary transform to generate a set of residual samples of the current block. Enabling or selection of secondary transform and/or primary transform depends on size, width, and/or height for the current block. The video decoder reconstructs the current block by using the set of residual samples and the set of prediction samples.

    Triangle Prediction With Applied-Block Settings And Motion Storage Settings
    17.
    发明申请
    Triangle Prediction With Applied-Block Settings And Motion Storage Settings 有权

    公开(公告)号：US20210360255A1

    公开(公告)日：2021-11-18

    申请号：US17387618

    申请日：2021-07-28

    Applicant: MediaTek Inc.

    Inventor： Man-Shu Chiang ,  Chun-Chia Chen ,  Chih-Wei Hsu

    IPC: H04N19/137 ,  H04N19/176 ,  H04N19/30 ,  H04N19/105

    Abstract: A video coder receives data from a bitstream for a block of pixels to be encoded or decoded as a current block of a current picture of a video. Upon determining that an applied block setting of the current block satisfies a threshold condition, the video coder generates a first prediction based on a first motion information for a first prediction unit of the current block. The video coder generates a second prediction based on a second motion information for a second prediction unit of the current block. The video coder generates a third prediction based on the first and second motion information for an overlap prediction region that is defined based on a partitioning between the first prediction unit and the second prediction unit. The video coder encodes or decodes the current block by using the first, second, and third predictions.

    Triangle prediction with applied-block settings and motion storage settings
    18.
    发明授权
    Triangle prediction with applied-block settings and motion storage settings 有权

    公开(公告)号：US11122272B2

    公开(公告)日：2021-09-14

    申请号：US16726924

    申请日：2019-12-25

    Applicant: MediaTek Inc.

    Inventor： Man-Shu Chiang ,  Chun-Chia Chen ,  Chih-Wei Hsu

    IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/137 ,  H04N19/176 ,  H04N19/30 ,  H04N19/105

    Abstract: A video coder receives data from a bitstream for a block of pixels to be encoded or decoded as a current block of a current picture of a video. Upon determining that an applied block setting of the current block satisfies a threshold condition, the video coder generates a first prediction based on a first motion information for a first prediction unit of the current block. The video coder generates a second prediction based on a second motion information for a second prediction unit of the current block. The video coder generates a third prediction based on the first and second motion information for an overlap prediction region that is defined based on a partitioning between the first prediction unit and the second prediction unit. The video coder encodes or decodes the current block by using the first, second, and third predictions.

    Merge candidates with multiple hypothesis
    19.
    发明授权
    Merge candidates with multiple hypothesis 有权

    公开(公告)号：US11051010B2

    公开(公告)日：2021-06-29

    申请号：US16513835

    申请日：2019-07-17

    Applicant: MediaTek Inc.

    Inventor： Man-Shu Chiang ,  Chih-Wei Hsu

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

    Abstract: A video decoder receives to-be-decoded data from a bitstream for a block of pixels to be decoded as a current block of a current picture of the video. The video decoder generates a first prediction of the current block based on a first prediction mode that is selected from a first candidate list. The video decoder generates a second prediction of the current block based on a second prediction mode that is selected from a second candidate list. The video decoder generates a combined prediction for the current block based on the first prediction and the second prediction. The video decoder reconstructs the current block by using the combined prediction.

    Signaling Multiple Transmission Selection
    20.
    发明申请
    Signaling Multiple Transmission Selection 有权

    公开(公告)号：US20210160541A1

    公开(公告)日：2021-05-27

    申请号：US17105573

    申请日：2020-11-26

    Applicant: MediaTek Inc.

    Inventor： Man-Shu Chiang ,  Chih-Wei Hsu ,  Tzu-Der Chuang ,  Ching-Yeh Chen

    IPC: H04N19/625 ,  H04N19/176

    Abstract: A method for multiple transform selection (MTS) is provided. A video decoder receives data from a bitstream for a block of pixels to be decoded as a current block of a current picture of a video. The decoder sets a zero-out indication based on one or more non-zero coefficient indications of subblocks of the current block. When the zero-out indication indicates that a zero-out region has no non-zero coefficient, the decoder parses the bitstream for an MTS index. When the zero-out indication indicates that the zero-out region has at least one non-zero coefficient, the decoder sets the MTS index to a default value without parsing the MTS index from the bitstream. The decoder selects a transform mode according to the MTS index for the current block. The decoder reconstructs the current block by using the selected transform mode.

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