公开(公告)号：US10356416B2

公开(公告)日：2019-07-16

申请号：US15174834

申请日：2016-06-06

Applicant: QUALCOMM Incorporated

Inventor： Hongbin Liu ,  Ying Chen ,  Jianle Chen ,  Marta Karczewicz

IPC: G06T7/20 ,  G06T7/246 ,  H04N19/50 ,  H04N19/51 ,  H04N19/52 ,  H04N19/70 ,  H04N19/109 ,  H04N19/119 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/463 ,  H04N19/583

Abstract: Techniques and systems are provided for coding video data. For example, a method of coding video data includes determining motion information for a current block and determining an illumination compensation status for the current block. The method further includes coding the current block based on the motion information and the illumination compensation status for the current block. In some examples, the method further includes determining the motion information for the current block based on motion information of a candidate block. In such examples, the method further includes determining an illumination compensation status of the candidate block and deriving the illumination compensation status for the current block based on the illumination compensation status of the candidate block.

公开(公告)号：US10158885B2

公开(公告)日：2018-12-18

申请号：US14906860

申请日：2013-12-24

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Vijayaraghavan Thirumalai ,  Hongbin Liu

IPC: H04N19/597 ,  H04N19/52 ,  H04N19/70 ,  H04N19/96

Abstract: A video coder determines a candidate for inclusion in a candidate list for a current prediction unit (PU). The candidate is based on motion parameters of a plurality of sub-PUs of the current PU. If a reference block corresponding to a sub-PU is not coded using motion compensated prediction, the video coder sets the motion parameters of the sub-PU to default motion parameters. For each respective sub-PU from the plurality of sub-PUs, if a reference block for the respective sub-PU is not coded using motion compensated prediction, the motion parameters of the respective sub-PU are not set in response to a subsequent determination that a reference block for any later sub-PU in an order is coded using motion compensated prediction.

公开(公告)号：US10148961B2

公开(公告)日：2018-12-04

申请号：US15166044

申请日：2016-05-26

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/13 ,  H04N19/174 ,  H04N19/159 ,  H04N19/42 ,  H04N19/70 ,  H04N19/126 ,  H04N19/139 ,  H03M7/40 ,  H04N19/46 ,  H04N19/91 ,  H04N19/146 ,  H04N19/184 ,  H03M7/30

Abstract: An example method of entropy coding video data includes determining a window size of a plurality of window sizes for a context of a plurality of contexts used in a context-adaptive coding process to entropy code a value for a syntax element of the video data; entropy coding, based on a probability state of the context, a bin of the value for the syntax element; updating a probability state of the context based on the window size and the coded bin. The example method also includes entropy coding a next bin with the same context based on the updated probability state of the context.

公开(公告)号：US20180241992A1

公开(公告)日：2018-08-23

申请号：US15895815

申请日：2018-02-13

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Hongbin Liu ,  Ying Chen

IPC: H04N19/107 ,  H04N19/159 ,  H04N19/70 ,  H04N19/182 ,  H04N19/463 ,  H04N19/597 ,  H04N19/91

CPC classification number: H04N19/107 ,  H04N19/159 ,  H04N19/182 ,  H04N19/463 ,  H04N19/597 ,  H04N19/70 ,  H04N19/91

Abstract: This disclosure describes techniques for signaling and processing information indicating simplified depth coding (SDC) for depth intra-prediction and depth inter-prediction modes in a 3D video coding process, such as a process defined by the 3D-HEVC extension to HEVC. In some examples, the disclosure describes techniques for unifying the signaling of SDC for depth intra-prediction and depth inter-prediction modes in 3D video coding. The signaling of SDC can be unified so that a video encoder or video decoder uses the same syntax element for signaling SDC for both the depth intra-prediction mode and the depth inter-prediction mode. Also, in some examples, a video coder may signal and/or process a residual value generated in the SDC mode using the same syntax structure, or same type of syntax structure, for both the depth intra-prediction mode and depth inter-prediction mode.

公开(公告)号：US20160286229A1

公开(公告)日：2016-09-29

申请号：US15080478

申请日：2016-03-24

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/513

CPC classification number: H04N19/513 ,  H04N19/109 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/52 ,  H04N19/56 ,  H04N19/57 ,  H04N19/70 ,  H04N19/96

Abstract: In an example, a method of processing video data includes determining a candidate motion vector for deriving motion information of a current block of video data, where the motion information indicates motion of the current block relative to reference video data. The method also includes determining a derived motion vector for the current block based on the determined candidate motion vector, where determining the derived motion vector comprises performing a motion search for a first set of reference data that corresponds to a second set of reference data outside of the current block.

Abstract translation: 在一个示例中，处理视频数据的方法包括：确定用于导出当前视频数据块的运动信息的候选运动矢量，其中运动信息指示当前块相对于参考视频数据的运动。 该方法还包括基于所确定的候选运动矢量确定当前块的导出运动矢量，其中确定导出的运动矢量包括对与第二组参考数据相对应的参考数据的第一组执行运动搜索 当前块。

公开(公告)号：US20160219290A1

公开(公告)日：2016-07-28

申请号：US15005736

申请日：2016-01-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/44 ,  H04N19/96 ,  H04N19/52 ,  H04N19/625 ,  H04N19/593 ,  H04N19/61

CPC classification number: H04N19/159 ,  H04N19/12 ,  H04N19/136 ,  H04N19/167 ,  H04N19/176 ,  H04N19/60 ,  H04N19/70

Abstract: Example techniques are described to determine transforms to be used during video encoding and video decoding. 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.

Abstract translation: 描述示例技术来确定在视频编码和视频解码期间使用的变换。 视频编码器和视频解码器可以选择每个识别一个或多个候选变换的变换子集。 视频编码器和视频解码器可以确定来自所选择的变换子集的变换。

公开(公告)号：US20160219278A1

公开(公告)日：2016-07-28

申请号：US15005564

申请日：2016-01-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/139 ,  H04N19/174 ,  H04N19/115

CPC classification number: H04N19/56 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/52 ,  H04N19/573 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

Abstract: In one example, a device for coding video data includes a memory configured to store video data and a video coder configured to form, for a current block of the video data, a merge candidate list including a plurality of merge candidates, the plurality of merge candidates including four spatial neighboring candidates from four neighboring blocks to the current block and, immediately following the four spatial neighboring candidates, an advanced temporal motion vector prediction (ATMVP) candidate, code an index into the merge candidate list that identifies a merge candidate of the plurality of merge candidates in the merge candidate list, and code the current block of video data using motion information of the identified merge candidate.

Abstract translation: 在一个示例中，用于编码视频数据的设备包括被配置为存储视频数据的存储器和视频编码器，视频编码器被配置为为视频数据的当前块形成包括多个合并候选的合并候选列表，多个合并 包括从四个相邻块到当前块的四个空间相邻候选的候选，并且紧跟在四个空间相邻候选之后的高级时间运动矢量预测（ATMVP）候选，将合并候选列表中的索引编码到合并候选列表中， 合并候选列表中的多个合并候选，并且使用所识别的合并候选的运动信息对当前的视频数据块进行编码。

公开(公告)号：US20150195562A1

公开(公告)日：2015-07-09

申请号：US14592767

申请日：2015-01-08

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Joel Sole Rojals ,  Marta Karczewicz ,  Hongbin Liu ,  Li Zhang ,  Jianle Chen

IPC: H04N19/523 ,  H04N19/176 ,  H04N19/139 ,  H04N19/513 ,  H04N19/105

CPC classification number: H04N19/523 ,  H04N19/105 ,  H04N19/109 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/53 ,  H04N19/533 ,  H04N19/56

Abstract: A device for decoding video data includes a memory configured to store video data and a video decoder comprising one or more processors configured to adaptively select motion vector precision for motion vectors used to encode blocks of video data.

Abstract translation: 用于解码视频数据的设备包括被配置为存储视频数据的存储器和包括一个或多个处理器的视频解码器，该处理器被配置为自适应地选择用于编码视频数据块的运动矢量的运动矢量精度。

公开(公告)号：US10368072B2

公开(公告)日：2019-07-30

申请号：US15166068

申请日：2016-05-26

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/13 ,  H04N19/174 ,  H04N19/159 ,  H04N19/42 ,  H04N19/70 ,  H04N19/126 ,  H04N19/139 ,  H03M7/40 ,  H04N19/46 ,  H04N19/91 ,  H04N19/146 ,  H04N19/184 ,  H03M7/30

Abstract: An example method of entropy coding video data includes obtaining a pre-defined initialization value for a context of a plurality of contexts used in a context-adaptive entropy coding process to entropy code a value for a syntax element in a slice of the video data, wherein the pre-defined initialization value is stored with N-bit precision; determining, using a look-up table and based on the pre-defined initialization value, an initial probability state of the context for the slice of the video data, wherein a number of possible probability states for the context is greater than two raised to the power of N; and entropy coding, based on the initial probability state of the context, a bin of the value for the syntax element.

公开(公告)号：US10306229B2

公开(公告)日：2019-05-28

申请号：US15005736

申请日：2016-01-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/12 ,  H04N19/60 ,  H04N19/70 ,  H04N19/103 ,  H04N19/109 ,  H04N19/112 ,  H04N19/122 ,  H04N19/129 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176

Abstract: Example techniques are described to determine transforms to be used during video encoding and video decoding. 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.