知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

383 records (took 0.053 seconds)

    Depth oriented inter-view motion vector prediction
    41.
    发明授权
    Depth oriented inter-view motion vector prediction 有权

    公开(公告)号：US09800895B2

    公开(公告)日：2017-10-24

    申请号：US14316145

    申请日：2014-06-26

    Applicant: QUALCOMM Incorporated

    Inventor： Vijayaraghavan Thirumalai ,  Li Zhang ,  Ying Chen

    IPC: H04N19/597 ,  H04N19/56 ,  H04N19/51 ,  H04N19/52 ,  H04N19/70

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

    Abstract: An example video coding device is configured to compare an inter-view predicted motion vector candidate (IPMVC) to a motion vector inheritance (MVI) candidate, where the IPMVC and the MVI candidate are each associated with a block of video data in a dependent depth view, and where the IPMVC is generated from a corresponding block of video data in a base depth view. The video coding device may be further configured to perform one of adding the IPMVC to a merge candidate list based on the IPMVC being different from the MVI candidate, or omitting the IPMVC from the merge candidate list based on the IPMVC being identical to the MVI candidate.

    GEOMETRIC TRANSFORMS FOR FILTERS FOR VIDEO CODING
    43.
    发明申请
    GEOMETRIC TRANSFORMS FOR FILTERS FOR VIDEO CODING 审中-公开

    公开(公告)号：US20170238020A1

    公开(公告)日：2017-08-17

    申请号：US15432839

    申请日：2017-02-14

    Applicant: QUALCOMM Incorporated

    Inventor： Marta Karczewicz ,  Wei-Jung Chien ,  Li Zhang

    IPC: H04N19/80

    CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/14 ,  H04N19/176 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

    Abstract: An example device for filtering a decoded block of video data includes one or more processors implemented in circuitry and configured to decode a current block of a current picture of the video data, select a filter (such as an adaptive loop filter) to be used to filter pixels of the current block, calculate a gradient of at least one pixel for the current block, select a geometric transform to be performed on one of a filter support region or coefficients of the selected filter, wherein the one or more processors are configured to select the geometric transform that corresponds to an orientation of the gradient of the at least one pixel, perform the geometric transform on either the filter support region or the coefficients of the selected filter, and filter the at least one pixel of the current block using the selected filter after performing the geometric transform.

    Parallel derived disparity vector for 3D video coding with neighbor-based disparity vector derivation
    44.
    发明授权
    Parallel derived disparity vector for 3D video coding with neighbor-based disparity vector derivation 有权

    公开(公告)号：US09667990B2

    公开(公告)日：2017-05-30

    申请号：US14290374

    申请日：2014-05-29

    Applicant: QUALCOMM Incorporated

    Inventor： Ying Chen ,  Li Zhang

    IPC: H04N7/12 ,  H04N19/52 ,  H04N19/597

    CPC classification number: H04N19/52 ,  H04N19/597

    Abstract: For each respective coding unit (CU) of a slice of a picture of the video data, a video coder may set, in response to determining that the respective CU is the first CU of a coding tree block (CTB) row of the picture or the respective CU is the first CU of the slice, a derived disparity vector (DDV) to an initial value. Furthermore, the video coder may perform a neighbor-based disparity vector derivation (NBDV) process that attempts to determine a disparity vector for the respective CU. When performing the NBDV process does not identify an available disparity vector for the respective CU, the video coder may determine that the disparity vector for the respective CU is equal to the DDV.

    Combined bi-predictive merging candidates for 3D video coding
    48.
    发明授权
    Combined bi-predictive merging candidates for 3D video coding 有权
    用于3D视频编码的组合双预测合并候选

    公开(公告)号：US09554150B2

    公开(公告)日：2017-01-24

    申请号：US14489679

    申请日：2014-09-18

    Applicant: QUALCOMM Incorporated

    Inventor： Li Zhang ,  Ying Chen

    IPC: H04N7/12 ,  H04N15/00 ,  H04N19/52 ,  H04N19/136 ,  H04N19/44 ,  H04N19/50 ,  H04N19/597 ,  H04N19/56 ,  H04N19/70 ,  H04N19/577

    CPC classification number: H04N19/52 ,  H04N19/136 ,  H04N19/44 ,  H04N19/50 ,  H04N19/56 ,  H04N19/577 ,  H04N19/597 ,  H04N19/70

    Abstract: A video coder generates a list of merging candidates for coding a video block of the 3D video. A maximum number of merging candidates in the list of merging candidates may be equal to 6. As part of generating the list of merging candidates, the video coder determines whether a number of merging candidates in the list of merging candidates is less than 5. If so, the video coder derives one or more combined bi-predictive merging candidates. The video coder includes the one or more combined bi-predictive merging candidates in the list of merging candidates.

    Abstract translation: 视频编码器生成用于对3D视频的视频块进行编码的合并候选的列表。 合并候选列表中的最大合并候选数可以等于6.作为生成合并候选列表的一部分，视频编码器确定合并候选列表中的合并候选数是否小于5.如果 因此，视频编码器导出一个或多个组合的双重预测合并候选。 视频编码器包括合并候选列表中的一个或多个组合的双重预测合并候选。

    Disparity vector generation for inter-view prediction for video coding
    49.
    发明授权
    Disparity vector generation for inter-view prediction for video coding 有权
    用于视频编码的视角间预测的视差向量生成

    公开(公告)号：US09549180B2

    公开(公告)日：2017-01-17

    申请号：US13865894

    申请日：2013-04-18

    Applicant: QUALCOMM Incorporated

    Inventor： Ying Chen ,  Li Zhang ,  Marta Karczewicz

    IPC: H04N19/00 ,  H04N19/51 ,  H04N19/597 ,  H04N19/52 ,  H04N19/513 ,  H04N19/436

    CPC classification number: H04N19/597 ,  H04N19/436 ,  H04N19/513 ,  H04N19/52

    Abstract: In one example, a video coder (e.g., a video encoder or a video decoder) is configured to determine that a current block of video data is coded using a disparity motion vector, wherein the current block is within a containing block, based on a determination that a neighboring block to the current block is also within the containing block, substitute a block outside the containing block and that neighbors the containing block for the neighboring block in a candidate list, select a disparity motion vector predictor from one of a plurality of blocks in the candidate list, and code the disparity motion vector based on the disparity motion vector predictor. In this manner, the techniques of this disclosure may allow blocks within the containing block to be coded in parallel.

    Abstract translation: 在一个示例中，视频编码器（例如，视频编码器或视频解码器）被配置为使用视差运动矢量来确定视频数据的当前块被编码，其中当前块位于包含块内，基于 确定当前块的相邻块也在所述包含块内，替代所述包含块外的块，并且在候选列表中邻近所述相邻块的所述包含块，从多个子块中的一个中选择视差运动向量预测器 候选列表中的块，并且基于视差运动矢量预测器对视差运动矢量进行编码。 以这种方式，本公开的技术可以允许并行地对包含块内的块进行编码。

    INTRA PREDICTION AND INTRA MODE CODING
    50.
    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：US20160373742A1

    公开(公告)日：2016-12-22

    申请号：US15184067

    申请日：2016-06-16

    Applicant: QUALCOMM Incorporated

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

    IPC: H04N19/11 ,  H04N19/147 ,  H04N19/18 ,  H04N19/176

    CPC classification number: H04N19/11 ,  H04N19/13 ,  H04N19/136 ,  H04N19/147 ,  H04N19/176 ,  H04N19/18 ,  H04N19/463 ,  H04N19/593 ,  H04N19/91

    Abstract: A device includes one or more processors configured to derive M most probable modes (MPMs) for intra prediction of a block of video data. A syntax element that indicates whether a MPM index or a non-MPM index is used to indicate a selected intra prediction mode of the plurality of intra prediction modes for intra prediction of the block of video data is decoded. The one or more processors are configured such that, based on the MPM index indicating the selected intra prediction mode, the one or more processors decode the non-MPM index. The non-MPM index is encoded in the bitstream as a code word shorter than [log2 N] bits if the non-MPM index satisfies a criterion and is encoded in the bitstream as a fixed length code with [log2 N] bits otherwise. The one or more processors reconstruct the block based on the selected intra prediction mode.

    Abstract translation: 一种设备包括被配置为导出M个最可能模式（MPM）的一个或多个处理器，用于视频数据块的帧内预测。 指示MPM索引或非MPM索引是否用于指示用于视频数据块的帧内预测的多个帧内预测模式的所选帧内预测模式的语法元素被解码。 一个或多个处理器被配置为使得基于指示所选择的帧内预测模式的MPM索引，一个或多个处理器解码非MPM索引。 如果非MPM索引满足标准，则将非MPM索引作为比[log2N]比特短的代码字被编码在比特流中，否则以[log2 N]比特被编码在比特流中作为固定长度码。 一个或多个处理器基于所选择的帧内预测模式重构块。

Patent Agency Ranking