公开(公告)号：US11218723B2

公开(公告)日：2022-01-04

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 ,  H04N19/593

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：US11095922B2

公开(公告)日：2021-08-17

申请号：US15665492

申请日：2017-08-01

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Wei-Jung Chien ,  Xin Zhao ,  Yi-Wen Chen ,  Marta Karczewicz

IPC: H04N19/82 ,  H04N19/157 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/117 ,  H04N19/122 ,  H04N19/147 ,  H04N19/17 ,  H04N19/18

Abstract: The present disclosure provides various techniques related to adaptive loop filtering (ALF), and particular to geometry transformation-based ALF (GALF). In an aspect, a method for decoding video data includes receiving an encoded bitstream having coded video data from which reconstructed video units are generated, identifying multiple filter supports for the reconstructed video units, and filtering the reconstructed video units using the respective multiple filter supports to produce a decoded video output. Another method includes enabling block-level control of ALF of chroma components for the reconstructed video units, performing, for the reconstructed video units, the block-level ALF for the chroma components when ALF is enabled for one video block and skip performing the block-level ALF for the chroma components when ALF is disabled for another video block, and generating, based on the enabled block-level control of ALF, a decoded video output. Related devices, means, and computer-readable medium are also described.

公开(公告)号：US10887622B2

公开(公告)日：2021-01-05

申请号：US16027173

申请日：2018-07-03

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/172 ,  H04N19/107 ,  H04N19/117 ,  H04N19/14 ,  H04N19/86 ,  H04N19/182

Abstract: A video decoder can be configured to perform a filtering operation by determining a first difference value that corresponds to a difference between the sample value of the selected sample and a sample value of a first neighboring sample; multiplying the first difference value by a first weighting parameter to determine a first weighted difference value; determining a second difference value that corresponds to a difference between the sample value of the selected sample and a sample value of a second neighboring sample; multiplying the second difference value by a second weighting parameter to determine a second weighted difference value; and adding the first weighted difference value and the second weighted difference value to the sample value of the selected sample to determine the modified sample value.

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.