公开(公告)号：US20200344482A1

公开(公告)日：2020-10-29

申请号：US16926337

申请日：2020-07-10

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/105 ,  H04N19/573 ,  H04N19/593 ,  H04N19/136

Abstract: A method of processing video data includes determining, by processing circuitry, a plurality of neighboring samples for predicting a current block. The plurality of neighboring samples are arranged outside of a region of a current picture, the region comprising the current block, a row of samples adjacent to a top row of the current block, and a column of samples adjacent to a left column of the current block. The method further comprises deriving, by the processing circuitry, local illumination compensation information for the current block using the plurality of neighboring samples and generating, by the processing circuitry, a prediction block using the local illumination compensation information.

公开(公告)号：US10791341B2

公开(公告)日：2020-09-29

申请号：US16155708

申请日：2018-10-09

Applicant: QUALCOMM Incorporated

Inventor： Amir Said ,  Hilmi Enes Egilmez ,  Marta Karczewicz ,  Vadim Seregin ,  Li Zhang ,  Xin Zhao

IPC: H04N19/70 ,  H04N19/184 ,  H04N19/44 ,  H04N19/463 ,  H04N19/91 ,  H04N19/13

Abstract: A video decoder can be configured to generate a first bin stream by, for at least one bin of the first bin stream, determining a first probability estimation for the at least one bin of the first bin stream based on a first set of parameters and generate a second bin stream by, for at least one bin of the second bin stream, determining a second probability estimation for the at least one bin of the second bin stream based on a second set of parameters that are different parameters than the first set of parameters.

公开(公告)号：US20200221116A1

公开(公告)日：2020-07-09

申请号：US16819955

申请日：2020-03-16

Applicant: QUALCOMM Incorporated

Inventor： Yi-Wen Chen ,  Wei-Jung Chien ,  Yu-Chen Sun ,  Li Zhang ,  Sungwon Lee ,  Xiang Li ,  Hsiao-Chiang Chuang ,  Jianle Chen ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/52 ,  H04N19/70 ,  H04N19/44 ,  H04N19/176 ,  H04N19/54

Abstract: A video coder may determine a motion vector of a non-adjacent block of a current picture of the video data. The non-adjacent block is non-adjacent to a current block of the current picture. Furthermore, the video coder determines, based on the motion vector of the non-adjacent block, a motion vector predictor (MVP) for the current block. The video coder may determine a motion vector of the current block. The video coder may also determine a predictive block based on the motion vector of the current block.

公开(公告)号：US10700829B2

公开(公告)日：2020-06-30

申请号：US16268186

申请日：2019-02-05

Applicant: QUALCOMM Incorporated

Inventor： Shravan Kumar Reddy Garlapati ,  Afshin Haftbaradaran ,  Alessandro Risso ,  Alexandre Pierrot ,  Chinmay Vaze ,  Hari Sankar ,  Li Zhang

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/26 ,  H03M13/13 ,  H03M13/29 ,  H04L1/18 ,  H03M13/09 ,  H04J11/00 ,  H04L25/03

Abstract: Certain aspects of the present disclosure generally relate to techniques for combining a plurality of decision metrics of a scrambled payload in a 5G wireless communications system. For example, in some cases, combining decision metrics of a scrambled payload may generally involve receiving a first payload at a receiver that was scrambled both before and after encoding, generating a second payload at the receiver with selectively set payload mask bits, and using the selectively-set payload mask bits in the second payload to descramble the first payload.

公开(公告)号：US10602180B2

公开(公告)日：2020-03-24

申请号：US16003269

申请日：2018-06-08

Applicant: QUALCOMM Incorporated

Inventor： Yi-Wen Chen ,  Marta Karczewicz ,  Wei-Jung Chien ,  Yu-Chen Sun ,  Li Zhang ,  Sungwon Lee ,  Xiang Li ,  Hsiao-Chiang Chuang ,  Jianle Chen ,  Vadim Seregin

IPC: H04N19/52 ,  H04N19/70 ,  H04N19/44 ,  H04N19/176

Abstract: A video coder may determine a motion vector of a non-adjacent block of a current picture of the video data. The non-adjacent block is non-adjacent to a current block of the current picture. Furthermore, the video coder determines, based on the motion vector of the non-adjacent block, a motion vector predictor (MVP) for the current block. The video coder may determine a motion vector of the current block. The video coder may also determine a predictive block based on the motion vector of the current block.

公开(公告)号：US20200077116A1

公开(公告)日：2020-03-05

申请号：US16677417

申请日：2019-11-07

Applicant: QUALCOMM Incorporated

Inventor： Sungwon Lee ,  Wei-Jung Chien ,  Li Zhang ,  Marta KARCZEWICZ

IPC: H04N19/56 ,  H04N19/52 ,  H04N19/51 ,  H04N19/122

Abstract: A method of decoding and encoding video data includes constructing a motion vector candidate list for the current block of video data based on the motion information from the neighboring blocks relative to the current block determined to include motion information, and adaptively ordering the constructed motion vector candidate list for the current block of video data based on at least one weight among a plurality of weights associated with motion information included in each neighboring block determined to include motion information.

公开(公告)号：US10560723B2

公开(公告)日：2020-02-11

申请号：US15973327

申请日：2018-05-07

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/61 ,  H04N19/70 ,  H04N19/159 ,  H04N19/186 ,  H04N19/103 ,  H04N19/176 ,  H04N19/625

Abstract: A device for coding video data is configured to determine a context for a first syntax element based on already coded information for a current block of video data, wherein a value for the first syntax element indicates whether there is at least one non-zero transform coefficient level associated with the current block of video data; and code the first syntax element based on the determined context.

公开(公告)号：US10455249B2

公开(公告)日：2019-10-22

申请号：US15073171

申请日：2016-03-17

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/593 ,  H04N19/117 ,  H04N19/70 ,  H04N19/80 ,  H04N19/186 ,  H04N19/44 ,  H04N19/176 ,  H04N19/167 ,  H04N19/59

Abstract: Example techniques related to linear model (LM) prediction decoding or encoding are described. A video decoder or video encoder determines which filter to apply from a set of filters to downsample samples of a luma block and generate a predictive block for a corresponding chroma block based on characteristics of the chroma block.

公开(公告)号：US20190320172A1

公开(公告)日：2019-10-17

申请号：US16381958

申请日：2019-04-11

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Cheng-Teh Hsieh ,  Kai Zhang ,  Akshay Gadde ,  Wei-Jung Chien ,  Marta Karczewicz

IPC: H04N19/117 ,  H04N19/189 ,  H04N19/70 ,  H04N19/169

Abstract: A video decoder configured to determine filter information for a region of a picture of video data; for a largest coding unit (LCU) of the region, determine a size for a current unit based on a location of the LCU within the picture, wherein the size for the current unit is different than a size of the LCU; and based on the determined filter information, determine a filter for the current unit of the region; and filter the current unit with the determined filter.

公开(公告)号：US20190306502A1

公开(公告)日：2019-10-03

申请号：US16371764

申请日：2019-04-01

Applicant: QUALCOMM Incorporated

Inventor： Akshay GADDE ,  Li Zhang ,  Marta Karczewicz ,  Wei-Jung Chein

IPC: H04N19/117 ,  H04N19/136 ,  H04N19/82 ,  H04N19/132 ,  H04N19/124 ,  H04N19/70

Abstract: Methods and systems for improved adaptive loop filters (ALFs) used in post-processing stage of in-loop coding or the prediction stage of video coding. To account for various shortcomings, techniques to improve coding gains and visual quality of ALFs are discussed. First, refinement of ALF coefficients for each block is allowed wherein different units (used for class calculation, e.g., 2×2 sub-blocks in GALF) located in different blocks with the same class index may have different filters. Second, ALF filters can be modified or weakened to without signaling ALF filter coefficients.