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    Sub-PU motion prediction for texture and depth coding
    41.
    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
    43.
    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.

    Sub-prediction unit (PU) based temporal motion vector prediction in HEVC and sub-PU design in 3D-HEVC
    45.
    发明授权
    Sub-prediction unit (PU) based temporal motion vector prediction in HEVC and sub-PU design in 3D-HEVC 有权

    公开(公告)号：US09762927B2

    公开(公告)日：2017-09-12

    申请号：US14497128

    申请日：2014-09-25

    Applicant: QUALCOMM Incorporated

    Inventor： Ying Chen ,  Li Zhang

    IPC: H04N19/53 ,  H04N19/56 ,  H04N19/196 ,  H04N19/597 ,  H04N19/52 ,  H04N19/96

    CPC classification number: H04N19/53 ,  H04N19/197 ,  H04N19/52 ,  H04N19/56 ,  H04N19/597 ,  H04N19/96

    Abstract: Techniques are described for sub-prediction unit (PU) based motion prediction for video coding in HEVC and 3D-HEVC. In one example, the techniques include an advanced temporal motion vector prediction (TMVP) mode to predict sub-PUs of a PU in single layer coding for which motion vector refinement may be allowed. The advanced TMVP mode includes determining motion vectors for the PU in at least two stages to derive motion information for the PU that includes different motion vectors and reference indices for each of the sub-PUs of the PU. In another example, the techniques include storing separate motion information derived for each sub-PU of a current PU predicted using a sub-PU backward view synthesis prediction (BVSP) mode even after motion compensation is performed. The additional motion information stored for the current PU may be used to predict subsequent PUs for which the current PU is a neighboring block.

    Depth oriented inter-view motion vector prediction
    46.
    发明授权
    Depth oriented inter-view motion vector prediction 有权

    公开(公告)号：US09716899B2

    公开(公告)日：2017-07-25

    申请号：US14316088

    申请日：2014-06-26

    Applicant: QUALCOMM Incorporated

    Inventor： Vijayaraghavan Thirumalai ,  Li Zhang ,  Ying Chen

    IPC: H04N19/597 ,  H04N19/70 ,  H04N19/52

    CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/70

    Abstract: An example video coding device is configured to determine a depth value associated with a block of video data included in a dependent depth view, based on one or more neighboring pixels positioned adjacent to the block of video data in the dependent depth view, and generate a disparity vector associated with the block of video data, based at least in part on the determined depth value associated with the block of video data. The video coding device may further be configured to use the disparity vector to generate an inter-view disparity motion vector candidate (IDMVC), generate an inter-view predicted motion vector candidate (IPMVC) associated with the block of video data based on a corresponding block of video data in a base view, and determine whether to add any of the IDMVC and the IPMVC to a merge candidate list associated with the block of video data.

    INTRA PREDICTION AND INTRA MODE CODING
    49.
    发明申请
    INTRA PREDICTION AND INTRA MODE CODING 审中-公开
    内部预测和内部模式编码

    公开(公告)号：US20160373743A1

    公开(公告)日：2016-12-22

    申请号：US15184118

    申请日：2016-06-16

    Applicant: QUALCOMM Incorporated

    Inventor： Xin Zhao ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

    IPC: H04N19/11 ,  H04N19/174 ,  H04N19/139 ,  H04N19/176 ,  H04N19/70 ,  H04N19/82

    CPC classification number: H04N19/11 ,  H04N19/117 ,  H04N19/136 ,  H04N19/139 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/59 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82

    Abstract: A device for decoding video data includes a memory configured to store the video data; and one or more processors configured to decode syntax information that indicates a selected intra prediction mode for the block of video data from among a plurality of intra prediction modes. The one or more processors apply an N-tap intra interpolation filter to neighboring reconstructed samples of the block of video data according to the selected intra prediction mode, wherein N is greater than 2. The one or more processors reconstruct the block of video data based on the filtered neighboring reconstructed samples according to the selected intra prediction mode.

    Abstract translation: 用于解码视频数据的设备包括被配置为存储视频数据的存储器; 以及一个或多个处理器，被配置为从多个帧内预测模式中解码指示用于视频数据块的所选帧内预测模式的语法信息。 一个或多个处理器根据所选择的帧内预测模式将N抽头内插滤波器应用于视频数据块的相邻重建样本，其中N大于2.一个或多个处理器重建基于视频数据的块 根据所选择的帧内预测模式对经滤波的相邻重建样本进行处理。

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