中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

132 records (took 0.048 seconds)

    Non-separable secondary transform for video coding with reorganizing
    104.
    发明授权
    Non-separable secondary transform for video coding with reorganizing 有权

    公开(公告)号：US10681379B2

    公开(公告)日：2020-06-09

    申请号：US15270507

    申请日：2016-09-20

    Applicant: QUALCOMM Incorporated

    Inventor： Xin Zhao ,  Jianle Chen ,  Amir Said ,  Marta Karczewicz ,  Vadim Seregin

    IPC: H04N19/122 ,  H04N19/18 ,  H04N19/124 ,  H04N19/61 ,  H04N19/12 ,  H04N19/159 ,  H04N19/176 ,  H04N19/625 ,  H04N1/32 ,  H04L12/26 ,  H04N19/182

    Abstract: Techniques are described in which a decoder is configured to reorganize a first 2-dimensional coefficient block as a first 1-dimensional coefficient vector according to a coefficient scanning order and apply a first inverse transform to the first 1-dimensional coefficient vector to generate a second 1-dimensional coefficient vector. The first inverse transform is a non-separable transform. The decoder is further configured to reorganize the first 1-dimensional coefficient vector as a second 2-dimensional coefficient block and apply a second inverse transform to the second 2-dimensional coefficient block to generate a residual video block. The second inverse transform converts the second 2-dimensional coefficient block from a frequency domain to a pixel domain. The decoder is further configured to form a decoded video block, wherein forming the decoded video block comprises summing the residual video block with one or more predictive blocks.

    Using luma information for chroma prediction with separate luma-chroma framework in video coding
    105.
    发明授权
    Using luma information for chroma prediction with separate luma-chroma framework in video coding 有权

    公开(公告)号：US10567759B2

    公开(公告)日：2020-02-18

    申请号：US15463428

    申请日：2017-03-20

    Applicant: QUALCOMM Incorporated

    Inventor： Vadim Seregin ,  Xin Zhao ,  Amir Said ,  Marta Karczewicz

    IPC: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91 ,  H04N19/184 ,  H04W84/04

    Abstract: A method of decoding video data comprises receiving a bitstream of encoded video data, the encoded video data representing partitioned luma blocks and partitioned chroma blocks, wherein the chroma blocks are partitioned independently of the luma blocks, determining a respective coding mode corresponding to the respective partitioned luma blocks, decoding the respective partitioned luma blocks according to the determined respective coding modes, decoding a first syntax element indicating that the respective coding modes associated with the respective partitioned luma blocks are to be used for decoding a first partitioned chroma block, wherein the first partitioned chroma block is aligned with two or more partitioned luma blocks, determining a chroma coding mode for the first partitioned chroma block according to a function of the respective coding modes of the two or more partitioned luma blocks, and decoding the first partitioned chroma block in accordance with the determined chroma coding mode.

    Implicit coding of reference line index used in intra prediction
    107.
    发明授权
    Implicit coding of reference line index used in intra prediction 有权

    公开(公告)号：US10484712B2

    公开(公告)日：2019-11-19

    申请号：US15616853

    申请日：2017-06-07

    Applicant: QUALCOMM Incorporated

    Inventor： Li Zhang ,  Xiang Li ,  Wei-Jung Chien ,  Jianle Chen ,  Xin Zhao ,  Marta Karczewicz

    IPC: H04N19/587 ,  H04N19/593 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44

    Abstract: A device for decoding video data determines that a current block of video data is coded using a linear model prediction mode; for the luma component of the current block, determines reconstructed luma samples; based on luma samples in a luma component of one or more already decoded neighboring blocks and chroma samples in a chroma component of the one or more already decoded neighboring blocks, determines values for linear parameters, wherein the luma samples in the luma component of the one or more already decoded neighboring blocks comprise luma samples from a starting line in the luma component of the one or more already decoded neighboring blocks, wherein the starting line in the luma component of the one or more already decoded neighboring blocks is at least one line removed from a border line of the luma component of the current block.

    Residual coding for depth intra prediction modes
    109.
    发明授权
    Residual coding for depth intra prediction modes 有权

    公开(公告)号：US10404999B2

    公开(公告)日：2019-09-03

    申请号：US14912152

    申请日：2014-09-26

    Applicant: QUALCOMM Incorporated

    Inventor： Hongbin Liu ,  Ying Chen ,  Li Zhang ,  Xin Zhao

    IPC: H04N19/597 ,  H04N19/70 ,  H04N19/13 ,  H04N19/18 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/593 ,  H04N19/11 ,  H04N19/91

    Abstract: A video coder may perform a simplified depth coding (SDC) mode, including simplified residual coding, to code a depth block according to any of a variety of, e.g., at least three, depth intra prediction modes. For example, the video coder may perform the SDC mode for coding a depth block according to depth modeling mode (DMM) 3, DMM 4, or a region boundary chain coding mode. In such examples, the video coder may partition the depth block, and code respective DC residual values for each partition. In some examples, the video coder may perform the SDC mode for coding a depth block according to an intra prediction mode, e.g., an HEVC base specification intra prediction mode, such as a DC intra prediction mode or one of the directional intra prediction modes. In such examples, the video coder may code a single DC residual value for the depth block.

    Efficient transform coding using optimized compact multi-pass transforms
    110.
    发明授权
    Efficient transform coding using optimized compact multi-pass transforms 有权

    公开(公告)号：US10390048B2

    公开(公告)日：2019-08-20

    申请号：US15432633

    申请日：2017-02-14

    Applicant: QUALCOMM Incorporated

    Inventor： Amir Said ,  Xin Zhao ,  Marta Karczewicz

    IPC: H04N7/12 ,  H04N19/70 ,  H04N19/124 ,  H04N19/61 ,  H04N19/91 ,  H04N19/60 ,  H04N19/42

    Abstract: As part of a video encoding or decoding process, a device applies a transformation to input data elements to derive output data elements for a current block. The transformation comprises a sequence of vector transformations. For each respective vector transformation of the sequence of vector transformations other than a first vector transformation of the sequence of vector transformations, input values for the respective vector transformation comprise output values of the respective previous vector transformation of the sequence of vector transformations. Each respective vector transformation of the sequence of vector transformations further takes, as input, a respective parameter vector for the respective vector transformation, the respective parameter vector for the respective vector transformation comprising one or more parameters.

Patent Agency Ranking