公开(公告)号：US10448010B2

公开(公告)日：2019-10-15

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 ,  H04N19/176 ,  H04N19/139 ,  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.

公开(公告)号：US20190313108A1

公开(公告)日：2019-10-10

申请号：US16375665

申请日：2019-04-04

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/18 ,  H04N19/96 ,  H04N19/176 ,  H04N19/122 ,  H04N19/129 ,  H04N19/159

Abstract: Techniques are described for decoding and encoding video data utilizing non-square coefficient groups (CGs). A coefficient group includes a plurality of coefficient values for a block of coefficient values. In one or more examples, the CGs that form at least part of the block of coefficient values are non-square shaped.

公开(公告)号：US10382781B2

公开(公告)日：2019-08-13

申请号：US15709270

申请日：2017-09-19

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Vadim Seregin ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/102 ,  H04N19/105 ,  H04N19/11 ,  H04N19/115 ,  H04N19/119 ,  H04N19/573 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82 ,  H04N19/593 ,  H04N19/59

Abstract: Techniques are described in which a video coder is configured to determine, using one or more characteristics of an interpolation filter, a number of reference samples to be stored at a reference buffer. The video coder is further configured to generate a plurality of values corresponding to the number of reference samples in the reference buffer. The video coder is further configured to generate prediction information for intra-prediction using the interpolation filter and the plurality of values. The video coder is further configured to reconstruct the block of video data based on the prediction information.

公开(公告)号：US20190246122A1

公开(公告)日：2019-08-08

申请号：US16268894

申请日：2019-02-06

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/186 ,  H04N19/91 ,  H04N19/70 ,  H04N19/117 ,  H04N19/176

CPC classification number: H04N19/186 ,  H04N19/117 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91

Abstract: A method of decoding video data including receiving a block of video data, determining to decode the block of video data using palette coding based on whether color components of the block of video data were partitioned according to a decoupled tree partition, and decoding the block of video data based on the determination.

公开(公告)号：US10375411B2

公开(公告)日：2019-08-06

申请号：US14773161

申请日：2013-03-15

Applicant: Xin Zhao ,  Li Zhang ,  Ying Chen ,  QUALCOMM Incorporated

Inventor： Xin Zhao ,  Li Zhang ,  Ying Chen

IPC: H04N19/50 ,  H04N19/119 ,  H04N19/182 ,  H04N19/11 ,  H04N19/124 ,  H04N19/176 ,  H04N19/61 ,  H04N19/597

Abstract: In an example, a process for coding video data includes determining a partitioning pattern for a block of depth values comprising assigning one or more samples of the block to a first partition and assigning one or more other samples of the block to a second partition. The process also includes determining a predicted value for at least one of the first partition and the second partition based on the determined partition pattern. The process also includes coding the at least one of the first partition and the second partition based on the predicted value.

公开(公告)号：US10271064B2

公开(公告)日：2019-04-23

申请号：US15176790

申请日：2016-06-08

Applicant: QUALCOMM Incorporated

Inventor： Wei-Jung Chien ,  Xianglin Wang ,  Li Zhang ,  Hongbin Liu ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/52 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70 ,  H04N19/172 ,  H04N19/176

Abstract: In one example, a device for decoding video data includes a memory configured to store video data and a video decoder configured to determine that a motion prediction candidate for a current block of video data indicates that motion information is to be derived for sub-blocks of the current block, in response to the determination: partition the current block into the sub-blocks, for each of the sub-blocks, derive motion information using motion information for at least two neighboring blocks, and decode the sub-blocks using the respective derived motion information.

公开(公告)号：US20190116373A1

公开(公告)日：2019-04-18

申请号：US16231026

申请日：2018-12-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/176 ,  H04N19/50 ,  H04N19/60 ,  H04N19/136 ,  H04N19/172 ,  H04N19/70 ,  H04N19/105

Abstract: A method of decoding video data including receiving a bitstream that includes a sequence of bits that forms a representation of a coded picture of the video data, partitioning the coded picture of the video data into a plurality of blocks using three or more different partition structures, and reconstructing the plurality of blocks of the coded picture of the video data. Partitioning the coded picture of the video data may include partitioning the coded picture of the video data into the plurality of blocks using the three or more different partition structures, wherein at least three of the three or more different partition structures may be used at each depth of a tree structure that represents how a particular block of the coded picture of the video data is partitioned.

公开(公告)号：US20190110058A1

公开(公告)日：2019-04-11

申请号：US16131860

申请日：2018-09-14

Applicant: QUALCOMM Incorporated

Inventor： Wei-Jung Chien ,  Hsiao-Chiang Chuang ,  Xiang Li ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/513 ,  H04N19/176 ,  H04N19/573 ,  H04N19/577

Abstract: A method of decoding video data includes constructing, by a video decoder implemented in processing circuitry, a candidate list of motion vector information for a portion of a current frame. The method includes receiving, by the video decoder, signaling information indicating starting motion vector information of the candidate list of motion vector information, the starting motion vector information indicating an initial position in a reference frame. The method includes refining, by the video decoder, based on one or more of bilateral matching or template matching, the starting motion vector information to determine refined motion vector information indicating a refined position in the reference frame that is within a search range from the initial position. The method includes generating, by the video decoder, a predictive block based on the refined motion vector information and decoding, by the video decoder, the current frame based on the predictive block.

公开(公告)号：US20190082193A1

公开(公告)日：2019-03-14

申请号：US16123747

申请日：2018-09-06

Applicant: QUALCOMM Incorporated

Inventor： Yu-Chen Sun ,  Yi-Wen Chen ,  Wei-Jung Chien ,  Li Zhang ,  Xiang Li ,  Marta Karczewicz

IPC: H04N19/563 ,  H04N19/176 ,  H04N19/182 ,  H04N19/82

CPC classification number: H04N19/563 ,  H04N19/176 ,  H04N19/182 ,  H04N19/52 ,  H04N19/82

Abstract: A video coder, such as a video encoder or a video decoder, may use reference pixels in a first picture to pad pixels outside a picture boundary of a second picture. The second picture is a different picture from the first picture. The padded pixels are in a padding area surrounding the second picture. The video coder may encode or decode one or more blocks of the video data based on the padded pixels.

公开(公告)号：US10212444B2

公开(公告)日：2019-02-19

申请号：US15404634

申请日：2017-01-12

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/12 ,  H04N11/02 ,  H04N19/44 ,  H04N19/105 ,  H04N19/50 ,  H04N19/176 ,  H04N19/119 ,  H04N19/172 ,  H04N19/136 ,  H04N19/60 ,  H04N19/70

Abstract: A method of decoding video data including receiving a bitstream that includes a sequence of bits that forms a representation of a coded picture of the video data, partitioning the coded picture of the video data into a plurality of blocks using three or more different partition structures, and reconstructing the plurality of blocks of the coded picture of the video data. Partitioning the coded picture of the video data may include partitioning the coded picture of the video data into the plurality of blocks using the three or more different partition structures, wherein at least three of the three or more different partition structures may be used at each depth of a tree structure that represents how a particular block of the coded picture of the video data is partitioned.