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    Method and apparatus of syntax interleaving for separate coding tree in video coding
    81.
    发明授权
    Method and apparatus of syntax interleaving for separate coding tree in video coding 有权

    公开(公告)号：US11115660B2

    公开(公告)日：2021-09-07

    申请号：US17051276

    申请日：2019-04-30

    Applicant: MEDIATEK INC.

    Inventor： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Kung-Nien Yang ,  Chun-Chia Chen

    IPC: H04N19/105 ,  H04N19/119 ,  H04N19/96 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

    Abstract: A methods and apparatus for block partition in video encoding and decoding are disclosed. According to one method, a current data unit is partitioned into initial blocks using inferred splitting without split-syntax signalling. The initial blocks comprises multiple initial luma blocks and multiple initial chroma blocks, and size of the initial luma block is M×N, M and N are positive integers and the current data unit is larger than M×N for the luma component. A partition structure is determined for partitioning each initial luma block and each initial chroma block into one or more luma CUs (coding units) and one or more chroma CUs respectively. The luma syntaxes and the chroma syntaxes associated with one initial block in the current data unit are signalled or parsed, and then the luma syntaxes and the chroma syntaxes associated with one next initial block in the current data unit are signalled or parsed.

    Sub-prediction unit temporal motion vector prediction (sub-PU TMVP) for video coding
    83.
    发明授权
    Sub-prediction unit temporal motion vector prediction (sub-PU TMVP) for video coding 有权

    公开(公告)号：US10582209B2

    公开(公告)日：2020-03-03

    申请号：US15940248

    申请日：2018-03-29

    Applicant: MEDIATEK INC.

    Inventor： Chun-Chia Chen ,  Chih-Wei Hsu ,  Ching-Yeh Chen ,  Yu-Wen Huang

    IPC: H04N19/51 ,  G06F16/783 ,  H04N19/70 ,  H04N19/573 ,  H04N19/119 ,  H04N19/513 ,  H04N19/52 ,  H04N19/176

    Abstract: Aspects of the disclosure provide a video coding method for processing a current prediction unit (PU) with a sub-PU temporal motion vector prediction (TMVP) mode. The method can include receiving the current PU including sub-PUs, determining an initial motion vector that is a motion vector of a spatial neighboring block of the current PU, performing a searching process to search for a main collocated picture in a sequence of reference pictures of the current PU based on the initial motion vector, and obtaining collocated motion information in the main collocated picture for the sub-PUs of the current PU. The searching process can include turning on motion vector scaling operation for searching a subset of the sequence of reference pictures, and turning off the motion vector scaling operation for searching the other reference pictures in the sequence of reference pictures.

    Split based motion vector operation reduction
    84.
    发明授权
    Split based motion vector operation reduction 有权

    公开(公告)号：US10523934B2

    公开(公告)日：2019-12-31

    申请号：US15992140

    申请日：2018-05-29

    Applicant: MediaTek Inc.

    Inventor： Chun-Chia Chen ,  Chih-Wei Hsu ,  Ching-Yeh Chen

    IPC: H04N19/105 ,  H04N19/182 ,  H04N19/513 ,  H04N19/52 ,  H04N19/70

    Abstract: A reduced merge candidate signaling method is provided. When building a merge candidate list for a prediction unit (PU) of a block of pixels, a video codec skips or partially skips the construction of some sub-PU merge candidates. The video codec then performs simplified pruning operations on the merge candidate list based on the skipped or partially constructed sub-PU merge candidates. The pruned candidate list is then used to select a merge candidate to encode or decode the block of pixels.

    Adapting merge candidate positions and numbers according to size and/or shape of prediction block
    85.
    发明授权
    Adapting merge candidate positions and numbers according to size and/or shape of prediction block 有权

    公开(公告)号：US10484703B2

    公开(公告)日：2019-11-19

    申请号：US15874650

    申请日：2018-01-18

    Applicant: MEDIATEK INC.

    Inventor： Chun-Chia Chen ,  Chih-Wei Hsu ,  Yu-Wen Huang

    IPC: H04N19/52 ,  H04N19/105 ,  H04N19/96 ,  H04N19/139 ,  H04N19/176 ,  H04N19/107

    Abstract: A method for video coding includes receiving a prediction block (PB) of a picture, and determining a number of merge candidate positions of the PB according to a size of the PB. The merge candidate positions on sides of the PB can be determined according to the number of the merge candidate positions. A candidate list can be constructed that includes motion data of a subset of the merge candidate positions. In some examples, a number of the merge candidate positions on one side of the PB is determined according to a side length of the respective side, or a width-height ratio of the PB. In some examples, the merge candidate positions on one side of the PB overlap or are adjacent to points that equally divide the respective side.

    Method and apparatus for arranging pixels of picture in storage units each having storage size not divisible by pixel size
    88.
    发明授权
    Method and apparatus for arranging pixels of picture in storage units each having storage size not divisible by pixel size 有权

    公开(公告)号：US10134107B2

    公开(公告)日：2018-11-20

    申请号：US14226840

    申请日：2014-03-27

    Applicant: MEDIATEK INC.

    Inventor： Chun-Chia Chen ,  Chi-Cheng Ju ,  Yung-Chang Chang ,  Ping Chao

    IPC: G06T1/60 ,  H04N19/51 ,  H04N19/433 ,  G06T7/40

    Abstract: A data arrangement method includes following steps: obtaining pixel data of a plurality of first N-bit pixels of a picture; and storing the obtained pixel data of the first N-bit pixels in a plurality of M-bit storage units of a first buffer according to a block-based scan order of the picture. The picture includes a plurality of data blocks, and the block-based scan order includes a raster-scan order for the data blocks. At least one of the M-bit storage units is filled with part of the obtained pixel data of the first N-bit pixels, M and N are positive integers, M is not divisible by N, and the first N-bit pixels include at least one pixel divided into a first part stored in one of the M-bit storage units in the first buffer and a second part stored in another of the M-bit storage units in the first buffer.

    SUB-PREDICTION UNIT TEMPORAL MOTION VECTOR PREDICTION (SUB-PU TMVP) FOR VIDEO CODING
    90.
    发明申请
    SUB-PREDICTION UNIT TEMPORAL MOTION VECTOR PREDICTION (SUB-PU TMVP) FOR VIDEO CODING 审中-公开

    公开(公告)号：US20180288430A1

    公开(公告)日：2018-10-04

    申请号：US15940248

    申请日：2018-03-29

    Applicant: MEDIATEK INC.

    Inventor： Chun-Chia Chen ,  Chih-Wei Hsu ,  Ching-Yeh Chen ,  Yu-Wen Huang

    IPC: H04N19/51 ,  H04N19/176 ,  G06F17/30

    Abstract: Aspects of the disclosure provide a video coding method for processing a current prediction unit (PU) with a sub-PU temporal motion vector prediction (TMVP) mode. The method can include receiving the current PU including sub-PUs, determining an initial motion vector that is a motion vector of a spatial neighboring block of the current PU, performing a searching process to search for a main collocated picture in a sequence of reference pictures of the current PU based on the initial motion vector, and obtaining collocated motion information in the main collocated picture for the sub-PUs of the current PU. The searching process can include turning on motion vector scaling operation for searching a subset of the sequence of reference pictures, and turning off the motion vector scaling operation for searching the other reference pictures in the sequence of reference pictures.

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