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    Method and Apparatus of Multi-Hypothesis in Video Coding
    11.
    发明申请
    Method and Apparatus of Multi-Hypothesis in Video Coding 有权

    公开(公告)号：US20210392322A1

    公开(公告)日：2021-12-16

    申请号：US17292184

    申请日：2019-11-12

    Applicant: MEDIATEK INC.

    Inventor： Man-Shu CHIANG ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN

    IPC: H04N19/105 ,  H04N19/51 ,  H04N19/176 ,  H04N19/172 ,  H04N19/119

    Abstract: A method and apparatus of prediction for video coding using MH (Multiple Hypothesis) mode are disclosed. According to this method, a block is partitioned into a first partition and a second partition. A first candidate and a second candidate are derived for the first and second partitions respectively. At least one of the first candidate and the second candidate is derived using a candidate list derived for a regular Merge mode (or also called as normal Merge mode). An MH prediction generated by blending a first prediction corresponding to a first candidate and a second prediction corresponding to a second candidate, and the MH prediction is applied to a part of the current block.

    Video Processing Methods and Apparatuses of Determining Motion Vectors for Storage in Video Coding Systems
    12.
    发明申请
    Video Processing Methods and Apparatuses of Determining Motion Vectors for Storage in Video Coding Systems 有权

    公开(公告)号：US20210360274A1

    公开(公告)日：2021-11-18

    申请号：US17296759

    申请日：2019-11-28

    Applicant: MEDIATEK INC.

    Inventor： Yu-Ling HSIAO ,  Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Chih-Wei HSU

    IPC: H04N19/51 ,  H04N19/119 ,  H04N19/176 ,  H04N19/105

    Abstract: Video processing methods and apparatuses for coding a current block comprise receiving input data of a current block, splitting the current block into sub-blocks, deriving motion information for the sub-blocks, performing motion compensation for the sub-blocks using the motion information to derive a final predictor, deriving and storing a representative motion vector for each grid in the current block, and encoding or decoding the current block using the final predictor. The representative motion vector for grids in a weighted area is determined by combining the motion vectors of the sub-blocks if the motion vectors of the sub-blocks are in different lists. The representative motion vector for grids in the weighted area is determined as one of the motion vectors of the sub-blocks if the motion vectors of the sub-blocks are in the same list.

    Method and Apparatus for Reduction of In-Loop Filter Buffer
    13.
    发明申请
    Method and Apparatus for Reduction of In-Loop Filter Buffer 有权

    公开(公告)号：US20210360238A1

    公开(公告)日：2021-11-18

    申请号：US17286713

    申请日：2019-10-18

    Applicant: MEDIATEK INC.

    Inventor： Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Yu-Chi SU ,  Chih-Wei HSU ,  Yu-Wen HUANG

    IPC: H04N19/117 ,  H04N19/80 ,  H04N19/132 ,  H04N19/186 ,  H04N19/176

    Abstract: Methods and apparatus for in-loop processing of reconstructed video are disclosed. According to one method, a virtual boundary is determined for to-be-processed pixels in the current picture, where the virtual boundary is aligned with block boundaries and at least one to-be-processed pixel on a first side of the virtual boundary requires one or more second pixels on a second side of the virtual boundary. According to the method, the in-loop processing is modified if a target to-be-processed pixel requires at least one second pixel from the second side of the virtual boundary and the modified in-loop processing eliminates the need for any second pixel on the second side of the virtual boundary. According to another method, the operations of block classification are changed when part of the required pixels in one 10×10 window used in classification are at the other side of virtual boundaries.

    MERGE CANDIDATES WITH MULTIPLE HYPOTHESIS
    14.
    发明申请
    MERGE CANDIDATES WITH MULTIPLE HYPOTHESIS 有权

    公开(公告)号：US20210274166A1

    公开(公告)日：2021-09-02

    申请号：US17323770

    申请日：2021-05-18

    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.

    Method and Apparatus of Simplified Sub-Mode for Video Coding
    15.
    发明申请
    Method and Apparatus of Simplified Sub-Mode for Video Coding 有权

    公开(公告)号：US20210266589A1

    公开(公告)日：2021-08-26

    申请号：US17265949

    申请日：2019-08-15

    Applicant: MEDIATEK INC.

    Inventor： Chun-Chia CHEN ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN

    IPC: H04N19/52 ,  H04N19/105 ,  H04N19/96 ,  H04N19/119

    Abstract: A method and apparatus of Inter prediction for video coding are disclosed. According to one method, a sub-block motion vector prediction (MVP) mode is turned off for small size coding units (CUs). In another method, if the neighbouring reference block for a current coding unit (CU) is in a root CU region, the neighbouring reference block is not used to derive a Merge candidate or a modified neighbouring reference block on the shared boundary of the root CU is used to derive the Merge candidate for the current block. In yet another method, a shared sub-block Merge candidate list is derived for sub-CUs within a root CU region or an MER (Merge estimation region). If a neighbouring reference block is within the same MER as a current sub-CU, the neighbouring reference block is not used for deriving a candidate for the shared sub-CU Merge list.

    Method and Apparatus of Enhanced Intra Block Copying Mode for Video Coding
    16.
    发明申请
    Method and Apparatus of Enhanced Intra Block Copying Mode for Video Coding 有权

    公开(公告)号：US20210250580A1

    公开(公告)日：2021-08-12

    申请号：US17257929

    申请日：2019-08-02

    Applicant: MEDIATEK INC.

    Inventor： Chun-Chia CHEN ,  Yu-Ling HSIAO ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen HUANG

    IPC: H04N19/105 ,  H04N19/159 ,  H04N19/137 ,  H04N19/70 ,  H04N19/176

    Abstract: A method and apparatus Inter prediction for video coding including IBC (Intra Block Copy) coding tool are disclosed. According to one method, a current permitted band inside the current picture for the current block is identified. A target IBC candidate is selected, where a target block vector of the target IBC candidate points from the current block to a target reference block in the current picture. An adjusted candidate list is generated by taking into account of the target IBC candidate and the current permitted band. The current motion information associated with the current block is encoded using the adjusted candidate list at the video encoder side or decoded using the adjusted candidate list at the video decoder side using the adjusted candidate list. In another method, a syntax for a target MVD (Motion Vector Difference) is decoded without sign information or with reduced sign information of the target MVD.

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