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    INTRA PREDICTION TECHNIQUES FOR VIDEO CODING
    113.
    发明申请
    INTRA PREDICTION TECHNIQUES FOR VIDEO CODING 审中-公开

    公开(公告)号：US20180199062A1

    公开(公告)日：2018-07-12

    申请号：US15866287

    申请日：2018-01-09

    Applicant: QUALCOMM Incorporated

    Inventor： Kai Zhang ,  Jianle Chen ,  Vadim Seregin ,  Hsiao-Chiang Chuang ,  Xiang Li ,  Li Zhang ,  Cheng-Teh Hsieh ,  Marta Karczewicz

    IPC: H04N19/593 ,  H04N19/59 ,  H04N19/13 ,  H04N19/96

    Abstract: A video decoder determines a current block of a current picture of video data has a size of P×Q, wherein P is a first value corresponding to a width of the current block and Q is a second value corresponding to a height of the current block, wherein P is not equal to Q, wherein the current block includes a short side and a long side, and wherein the first value added to the second value does not equal a value that is a power of 2; decodes the current block of video data using intra DC mode prediction, wherein decoding the current block of video data using intra DC mode prediction comprises performing a shift operation to calculate a DC value and generating a prediction block for the current block of video data using the calculated DC value; and outputs a decoded version of the current picture.

    MODIFIED ADAPTIVE LOOP FILTER TEMPORAL PREDICTION FOR TEMPORAL SCALABILITY SUPPORT
    114.
    发明申请
    MODIFIED ADAPTIVE LOOP FILTER TEMPORAL PREDICTION FOR TEMPORAL SCALABILITY SUPPORT 审中-公开

    公开(公告)号：US20180192050A1

    公开(公告)日：2018-07-05

    申请号：US15861165

    申请日：2018-01-03

    Applicant: QUALCOMM Incorporated

    Inventor： Li Zhang ,  Wei-Jung Chien ,  Marta Karczewicz ,  Ye-Kui Wang

    IPC: H04N19/117 ,  H04N19/80

    Abstract: A video coder may reconstruct a current picture of video data. A current region of the current picture is associated with a temporal index indicating a temporal layer to which the current region belongs. Furthermore, for each respective array of a plurality of arrays that correspond to different temporal layers, the video coder may store, in the respective array, sets of adaptive loop filtering (ALF) parameters used in applying ALF filters to samples of regions of pictures of the video data that are decoded prior to the current region and that are in the temporal layer corresponding to the respective array or a lower temporal layer than the temporal layer corresponding to the respective array. The video coder determines, based on a selected set of ALF parameters in the array corresponding to the temporal layer to which the current region belongs, an applicable set of ALF parameters.

    Sub-PU motion prediction for texture and depth coding
    118.
    发明授权
    Sub-PU motion prediction for texture and depth coding 有权

    公开(公告)号：US09948915B2

    公开(公告)日：2018-04-17

    申请号：US14339256

    申请日：2014-07-23

    Applicant: QUALCOMM Incorporated

    Inventor： Ying Chen ,  Li Zhang

    IPC: H04N19/51 ,  H04N13/00 ,  H04N19/176 ,  H04N19/597 ,  H04N19/583 ,  H04N19/513

    CPC classification number: H04N13/161 ,  H04N19/176 ,  H04N19/51 ,  H04N19/513 ,  H04N19/597

    Abstract: In accordance with one or more techniques of this disclosure, a video coder may divide a current prediction unit (PU) into a plurality of sub-PUs. Each of the sub-PUs may have a size smaller than a size of the PU. Furthermore, the current PU may be in a depth view of the multi-view video data. For each respective sub-PU from the plurality of sub-PUs, the video coder may identify a reference block for the respective sub-PU. The reference block may be co-located with the respective sub-PU in a texture view corresponding to the depth view. The video coder may use motion parameters of the identified reference block for the respective sub-PU to determine motion parameters for the respective sub-PU.

    MOTION VECTOR PREDICTION FOR AFFINE MOTION MODELS IN VIDEO CODING
    120.
    发明申请
    MOTION VECTOR PREDICTION FOR AFFINE MOTION MODELS IN VIDEO CODING 审中-公开

    公开(公告)号：US20180098063A1

    公开(公告)日：2018-04-05

    申请号：US15725052

    申请日：2017-10-04

    Applicant: QUALCOMM Incorporated

    Inventor： Yi-Wen Chen ,  Wei-Jung Chien ,  Li Zhang ,  Yu-Chen Sun ,  Jianle Chen ,  Marta Karczewicz

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

    CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/52 ,  H04N19/537

    Abstract: A video decoder selects a source affine block. The source affine block is an affine-coded block that spatially neighbors a current block. Additionally, the video decoder extrapolates motion vectors of control points of the source affine block to determine motion vector predictors for control points of the current block. The video decoder inserts, into an affine motion vector predictor (MVP) set candidate list, an affine MVP set that includes the motion vector predictors for the control points of the current block. The video decoder also determines, based on an index signaled in a bitstream, a selected affine MVP set in the affine MVP set candidate list. The video decoder obtains, from the bitstream, motion vector differences (MVDs) that indicate differences between motion vectors of the control points of the current block and motion vector predictors in the selected affine MVP set.

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