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：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：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.

公开(公告)号：US20180278951A1

公开(公告)日：2018-09-27

申请号：US15933070

申请日：2018-03-22

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Yu-Chen Sun ,  Yi-Wen Chen ,  Wei-Jung Chien ,  Xin Zhao ,  Rajan Laxman Joshi ,  Marta Karczewicz

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

Abstract: Techniques are described to increase the coding efficiency of information indicating a sign of a motion vector difference (MVD) component. A video coder may determine a MVD component sign predictor, and determine whether the MVD component sign predictor is the MVD component sign based on an indicator that is transmitted or received. In some examples, the indicator may be context coded, which promotes coding efficiencies.

公开(公告)号：US10085027B2

公开(公告)日：2018-09-25

申请号：US14737252

申请日：2015-06-11

Applicant: QUALCOMM Incorporated

Inventor： Chengjie Tu ,  Wei-Jung Chien ,  Xianglin Wang ,  Jaehong Chon ,  In Suk Chong ,  Marta Karczewicz ,  Woo-Shik Kim ,  Xin Zhao

IPC: H04N11/02 ,  H04N19/14 ,  H04N19/147 ,  H04N19/176 ,  H04N19/119 ,  H04N19/109 ,  H04N19/157 ,  H04N19/567 ,  H04N19/174

CPC classification number: H04N19/14 ,  H04N19/109 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/174 ,  H04N19/176 ,  H04N19/567

Abstract: A video encoding device comprises a memory configured and at least one processor configured to: determine whether a metric meets a condition based on statistics, wherein the statistics are associated with a first video encoding mode checking order and a second video encoding mode checking order, responsive to determining that the metric meets the condition, select a first encoding mode checking order to encode the first block of video data responsive to determining that the condition is not met, select a second encoding mode checking order different from the first encoding mode checking order to encode the first block of video data, update the statistics based on the selected first or second encoding mode checking order, and encode a second block of video data, based on the updated statistics, and using the first or second mode checking order.

公开(公告)号：US20180176582A1

公开(公告)日：2018-06-21

申请号：US15848862

申请日：2017-12-20

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/18 ,  H04N19/129 ,  H04N19/176 ,  H04N19/51 ,  H04N19/593 ,  H04N19/61 ,  H04N19/124 ,  H04N19/13

CPC classification number: H04N19/105 ,  H04N19/122 ,  H04N19/124 ,  H04N19/126 ,  H04N19/129 ,  H04N19/13 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/184 ,  H04N19/51 ,  H04N19/593 ,  H04N19/619

Abstract: Techniques for cost function measurement with respect to sign prediction-based video coding are generally described. An example device includes processing circuitry is configured to apply first and second sign combinations to transform coefficients of a stored block of video data to obtain first and second hypothesis reconstructions of the block, to measure first and second cost functions with respect to the first and second hypothesis reconstructions by determining respective sets of pixel value gradients representing differences between samples of each hypothesis reconstruction of the block and samples of a neighboring block positioned adjacent to the block. The processing circuitry is further configured to compare the respective cost functions, to select, based on the comparison, one of the hypothesis reconstructions of the block, and to code the block using the respective sign combination associated with the selected hypothesis reconstruction.

公开(公告)号：US09998742B2

公开(公告)日：2018-06-12

申请号：US15006994

申请日：2016-01-26

Applicant: QUALCOMM Incorporated

Inventor： Jianle Chen ,  Hongbin Liu ,  Ying Chen ,  Li Zhang ,  Xiang Li ,  Xin Zhao ,  Marta Karczewicz

IPC: H04N19/186 ,  H04N19/463 ,  H04N19/105 ,  H04N19/593

CPC classification number: H04N19/186 ,  H04N19/105 ,  H04N19/463 ,  H04N19/593

Abstract: A system and method for encoding and decoding video data. A predicted residual signal of a target color component is determined as a function of one or more linear parameters of a linear model and of a residual signal of a source color component. A residual signal of the target color component is determined as a function of a remaining residual signal of the target color component and of the predicted residual signal of the target color component.

公开(公告)号：US20180020218A1

公开(公告)日：2018-01-18

申请号：US15649612

申请日：2017-07-13

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/124 ,  H04N19/103

Abstract: Example techniques are described to illustrate multiple transform applied for Intra prediction residual. It may be used in the context of advanced video codecs, such as extensions of HEVC or the next generation of video coding standards. A video encoder and a video decoder may select transform subsets that each identify one or more candidate transforms. The video encoder and the video decoder may determine transforms from the selected transform subsets.

公开(公告)号：US20170272782A1

公开(公告)日：2017-09-21

申请号：US15463398

申请日：2017-03-20

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle Chen ,  Li Zhang ,  Xin Zhao ,  Hsiao-Chiang Chuang ,  Feng Zou ,  Marta Karczewicz

IPC: H04N19/96 ,  H04N19/583

CPC classification number: H04N19/96 ,  H04N19/103 ,  H04N19/119 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30 ,  H04N19/45 ,  H04N19/46 ,  H04N19/50 ,  H04N19/51 ,  H04N19/583 ,  H04N19/593 ,  H04N19/61 ,  H04N19/91

Abstract: An example device for decoding video data includes a video decoder configured to decode one or more syntax elements at a region-tree level of a region-tree of a tree data structure for a coding tree block (CTB) of video data, the region-tree having one or more region-tree nodes including region-tree leaf and non-leaf nodes, each of the region-tree non-leaf nodes having at least four child region-tree nodes, decode one or more syntax elements at a prediction-tree level for each of the region-tree leaf nodes of one or more prediction trees of the tree data structure for the CTB, the prediction trees each having one or more prediction-tree leaf and non-leaf nodes, each of the prediction-tree non-leaf nodes having at least two child prediction-tree nodes, each of the prediction leaf nodes defining respective coding units (CUs), and decode video data for each of the CUs.

公开(公告)号：US20170272748A1

公开(公告)日：2017-09-21

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 ,  H04N19/61 ,  H04N19/91 ,  H04N19/70 ,  H04N19/46

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.