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    ANGULAR MODE SIMPLIFICATION FOR GEOMETRY-BASED POINT CLOUD COMPRESSION
    4.
    发明申请
    ANGULAR MODE SIMPLIFICATION FOR GEOMETRY-BASED POINT CLOUD COMPRESSION 审中-公开

    公开(公告)号：WO2021207495A1

    公开(公告)日：2021-10-14

    申请号：PCT/US2021/026384

    申请日：2021-04-08

    Applicant: QUALCOMM INCORPORATED

    Inventor： VAN DER AUWERA, Geert ,  KEROFSKY, Louis Joseph ,  RAY, Bappaditya ,  RAMASUBRAMONIAN, Adarsh Krishnan ,  KARCZEWICZ, Marta

    IPC: G06T9/00 ,  H04N19/13 ,  H04N19/597 ,  H04N19/70 ,  H04N19/91

    Abstract: A method of decoding point cloud data comprises obtaining a bitstream that includes an arithmetically encoded syntax element indicating a vertical plane position of a planar mode of a node; and decoding the vertical plane position of the planar mode in the node, wherein decoding the vertical plane position of the planar mode comprises: determining a laser index of a laser candidate in a set of laser candidates, wherein the determined laser index indicates a laser beam that intersects the node; determining a context index based on whether the laser beam is above a first distance threshold, between the first distance threshold and a second distance threshold, between the second distance threshold and a third distance threshold, or below the third distance threshold; and arithmetically decoding the vertical plane position of the planar mode using a context indicated by the determined context index.

    MATRIX COMBINATION FOR MATRIX-WEIGHTED INTRA PREDICTION IN VIDEO CODING
    5.
    发明申请
    MATRIX COMBINATION FOR MATRIX-WEIGHTED INTRA PREDICTION IN VIDEO CODING 审中-公开

    公开(公告)号：WO2021055828A1

    公开(公告)日：2021-03-25

    申请号：PCT/US2020/051601

    申请日：2020-09-18

    Applicant: QUALCOMM INCORPORATED

    Inventor： BIATEK, Thibaud Laurent ,  RAMASUBRAMONIAN, Adarsh Krishnan ,  VAN DER AUWERA, Geert ,  KARCZEWICZ, Marta

    IPC: H04N19/70 ,  H04N19/593 ,  H04N19/59

    Abstract: A video decoder obtains a transpose flag from the bitstream. The video decoder determines an input vector based on neighboring samples for a current block of the video data. The transpose flag indicates whether the input vector is transposed. Additionally, the video decoder determines a prediction signal. Determining the prediction signal includes multiplying a MIP matrix by the input vector. The prediction signal includes values corresponding to a first set of locations in a prediction block for the current block and the MIP matrix corresponds to the MIP mode index. The video decoder applies an interpolation process to the prediction signal to determine values corresponding to a second set of locations in the prediction block for the current block.

    INTER-INTRA PREDICTION MODE FOR VIDEO DATA
    9.
    发明申请
    INTER-INTRA PREDICTION MODE FOR VIDEO DATA 审中-公开

    公开(公告)号：WO2020163526A1

    公开(公告)日：2020-08-13

    申请号：PCT/US2020/016877

    申请日：2020-02-05

    Applicant: QUALCOMM INCORPORATED

    Inventor： PHAM VAN, Luong ,  VAN DER AUWERA, Geert ,  RAMASUBRAMONIAN, Adarsh Krishnan ,  KARCZEWICZ, Marta

    IPC: H04N19/107 ,  H04N19/159 ,  H04N19/186

    Abstract: An example device for coding (encoding or decoding) video data includes a memory for storing video data and one or more processors implemented in circuitry and configured to form an inter-prediction block for a current chrominance block of the video data; form an intra-prediction block for the current chrominance block of the video data; determine a number of neighboring blocks to a luminance block corresponding to the current chrominance block that are intra-prediction coded; determine a first weight and a second weight according to the number of neighboring blocks that are intra-prediction coded; apply the first weight to the inter-prediction block and the second weight to the intra-prediction block; combine the first weighted inter- prediction block and the second weighted intra-prediction block to form a prediction block for the current chrominance block; and code the current chrominance block using the prediction block.

    IMPROVED SUB-PARTITION INTRA PREDICTION
    10.
    发明申请
    IMPROVED SUB-PARTITION INTRA PREDICTION 审中-公开

    公开(公告)号：WO2020163182A3

    公开(公告)日：2020-08-13

    申请号：PCT/US2020/016260

    申请日：2020-01-31

    Applicant: QUALCOMM INCORPORATED

    Inventor： RAMASUBRAMONIAN, Adarsh Krishnan ,  VAN DER AUWERA, Geert ,  PHAM VAN, Luong ,  KARCZEWICZ, Marta

    IPC: H04N19/119 ,  H04N19/167 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96

    Abstract: Techniques are described for improving intra-subpartitioning (ISP) mode for splitting coding blocks into sub-blocks. In some cases, whether ISP mode is enabled for a coding block is based on size constraints pertaining to data units (e.g., VPDUs, transform blocks, among others). For instance, based on a size constraint related to a VPDU, the ISP mode can be disabled for coding blocks crossing VPDU boundaries. In some cases, whether to enable ISP mode may be based on comparison of the width and/or height of the coding block to size thresholds corresponding to one or more maximum transform block sizes. In some cases, where the ISP mode is enabled for a coding block, a value of a flag used for defining a type of split, horizontal or vertical, for the coding block, can be inferred based on the width and/or height of the coding block relative to one or more thresholds.

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