公开(公告)号：US20170094285A1

公开(公告)日：2017-03-30

申请号：US15272034

申请日：2016-09-21

Applicant: QUALCOMM Incorporated

Inventor： Amir Said ,  Xin Zhao ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/147 ,  H04N19/117 ,  H04N19/70 ,  H04N19/105 ,  H04N19/157

Abstract: Techniques are described to improved video intra prediction using position-dependent prediction combination in video coding. In High Efficiency Video Encoding a set of 35 linear predictors are used for doing intra coding and prediction can be computed from either a nonfiltered or a filtered set of neighboring “reference” pixels, depending on the selected predictor mode and block size. Techniques of this disclosure may use a weighted combination of both the nonfiltered and filtered set of reference pixels to achieve better compression via improved prediction and therefore small residual, enable effective parallel computation of all sets of prediction values, and maintain low complexity via applying filtering only to a set of reference pixels and not to predicted values themselves.

公开(公告)号：US20160373743A1

公开(公告)日：2016-12-22

申请号：US15184118

申请日：2016-06-16

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/11 ,  H04N19/174 ,  H04N19/139 ,  H04N19/176 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/11 ,  H04N19/117 ,  H04N19/136 ,  H04N19/139 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/59 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82

Abstract: A device for decoding video data includes a memory configured to store the video data; and one or more processors configured to decode syntax information that indicates a selected intra prediction mode for the block of video data from among a plurality of intra prediction modes. The one or more processors apply an N-tap intra interpolation filter to neighboring reconstructed samples of the block of video data according to the selected intra prediction mode, wherein N is greater than 2. The one or more processors reconstruct the block of video data based on the filtered neighboring reconstructed samples according to the selected intra prediction mode.

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; 以及一个或多个处理器，被配置为从多个帧内预测模式中解码指示用于视频数据块的所选帧内预测模式的语法信息。 一个或多个处理器根据所选择的帧内预测模式将N抽头内插滤波器应用于视频数据块的相邻重建样本，其中N大于2.一个或多个处理器重建基于视频数据的块 根据所选择的帧内预测模式对经滤波的相邻重建样本进行处理。

公开(公告)号：US20160366415A1

公开(公告)日：2016-12-15

申请号：US15174820

申请日：2016-06-06

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/136 ,  H04N19/176 ,  H04N19/139 ,  H04N19/51 ,  H04N19/119

CPC classification number: H04N19/136 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/463 ,  H04N19/51 ,  H04N19/577 ,  H04N19/70 ,  H04N19/82

Abstract: Techniques and systems are provided for coding video data. For example, a method of coding video data includes determining one or more illumination compensation parameters for a current block and coding the current block as part of an encoded bitstream using the one or more illumination compensation parameters. In some cases, the method can include determining one or more spatially neighboring samples for the current block and deriving the one or more illumination compensation parameters for the current block based on at least one of the one or more spatially neighboring samples. The method can further include signaling, individually, for the current block, an illumination compensation status in the encoded bitstream. The method can further include signaling at least one of the one or more illumination compensation parameters for the current block in the encoded bitstream.

Abstract translation: 提供了用于编码视频数据的技术和系统。 例如，编码视频数据的方法包括确定当前块的一个或多个照明补偿参数，并使用该一个或多个照明补偿参数将当前块编码为编码比特流的一部分。 在一些情况下，该方法可以包括确定当前块的一个或多个空间相邻样本，并且基于一个或多个空间相邻样本中的至少一个来导出当前块的一个或多个照明补偿参数。 该方法还可以包括针对当前块单独地发送编码比特流中的照明补偿状态。 该方法还可以包括对编码比特流中当前块的一个或多个照明补偿参数中的至少一个进行信令。

公开(公告)号：US09516309B2

公开(公告)日：2016-12-06

申请号：US13935041

申请日：2013-07-03

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N11/02 ,  H04N19/30 ,  H04N19/105 ,  H04N19/70 ,  H04N19/147 ,  H04N19/593 ,  H04N19/80 ,  H04N19/82 ,  H04N19/33 ,  H04N19/85 ,  H04N19/86

CPC classification number: H04N19/30 ,  H04N19/105 ,  H04N19/147 ,  H04N19/33 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/85 ,  H04N19/86

Abstract: An apparatus for coding video information according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores difference video information associated with a difference video layer of pixel information derived from a difference between an enhancement layer and a corresponding base layer of the video information. The processor determines an enhancement layer weight and a base layer weight, and determines a value of a current video unit based on the difference video layer, a value of a video unit in the enhancement layer weighted by the enhancement layer weight, and a value of a video unit in the base layer weighted by the base layer weight.

Abstract translation: 根据某些方面的用于编码视频信息的装置包括存储器单元和与存储器单元通信的处理器。 存储单元存储与视频信息的增强层和对应的基本层之间的差异导出的像素信息的差异视频层相关联的差分视频信息。 处理器确定增强层权重和基本层权重，并且基于差异视频层确定当前视频单元的值，由增强层权重加权的增强层中的视频单元的值和 由基层重量加权的基层中的视频单元。

公开(公告)号：US20160353112A1

公开(公告)日：2016-12-01

申请号：US15166144

申请日：2016-05-26

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Marta Karczewicz ,  Jianle Chen

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/136 ,  H04N19/122 ,  H04N19/174 ,  H04N19/124

CPC classification number: H04N19/13 ,  H04N19/122 ,  H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/436 ,  H04N19/577 ,  H04N19/625 ,  H04N19/91

Abstract: A video coding device includes a memory configured to store video data and processor(s) configured to process at least a portion of the stored video data. The processor(s) are configured to identify a coefficient group (CG) that includes a current transform coefficient of the video data, the CG representing a subset of transform coefficients within a transform unit. The processor(s) are further configured to determine a size of the CG based on a combination of a transform size and one or both of (i) a coding mode associated with the transform unit, or (ii) a transform matrix associated with the transform unit.

Abstract translation: 视频编码装置包括被配置为存储视频数据的存储器和被配置为处理所存储的视频数据的至少一部分的处理器。 处理器被配置为识别包括视频数据的当前变换系数的系数组（CG），CG表示变换单元内的变换系数的子集。 处理器还被配置为基于变换大小和（i）与变换单元相关联的编码模式中的一者或两者的组合来确定CG的大小，或者（ii）与该变换单元相关联的变换矩阵 变换单元。

公开(公告)号：US20160353111A1

公开(公告)日：2016-12-01

申请号：US15166132

申请日：2016-05-26

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Marta Karczewicz ,  Jianle Chen

IPC: H04N19/13 ,  H04N19/174 ,  H04N19/159 ,  H04N19/577 ,  H04N19/126

CPC classification number: H04N19/13 ,  H04N19/122 ,  H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/436 ,  H04N19/577 ,  H04N19/625 ,  H04N19/91

Abstract: Context adaptive binary arithmetic coding (CABAC) techniques are generally described. Aspects of the techniques are generally directed to inheritance-based context initialization. An example video coding device includes a memory configured to store video data, and one or more processors. The processor(s) are configured to initialize context information for a current slice of a current picture by inheriting context information of a previously-coded block of a previously-coded picture of the stored video data as initialized context information for the current slice of the current picture. The processor(s) are further configured to code data of the current slice using the initialized context information.

Abstract translation: 通常描述上下文自适应二进制算术编码（CABAC）技术。 技术方面通常涉及基于继承的上下文初始化。 示例性视频编码设备包括被配置为存储视频数据的存储器和一个或多个处理器。 处理器被配置为通过将存储的视频数据的先前编码的图像的先前编码的块的上下文信息继承为当前图像的当前片段的初始化上下文信息来初始化当前图片的当前片段的上下文信息 当前图片。 处理器还被配置为使用初始化的上下文信息来对当前片的数据进行编码。

公开(公告)号：US20160353110A1

公开(公告)日：2016-12-01

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 ,  H04N19/70 ,  H04N19/42 ,  H04N19/174 ,  H04N19/159

CPC classification number: H04N19/13 ,  H03M7/4018 ,  H03M7/6011 ,  H04N19/126 ,  H04N19/139 ,  H04N19/146 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/42 ,  H04N19/46 ,  H04N19/70 ,  H04N19/91

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.

Abstract translation: 熵编码视频数据的示例方法包括：确定用于上下文自适应编码处理中使用的多个上下文的上下文的多个窗口大小的窗口大小，以熵编码视频数据的语法元素的值; 熵编码，基于上下文的概率状态，语法元素的值的一个bin; 基于窗口尺寸和编码箱更新上下文的概率状态。 该示例方法还包括基于更新的上下文概率状态对具有相同上下文的下一个bin进行熵编码。

公开(公告)号：US20160353108A1

公开(公告)日：2016-12-01

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: H04N19/126 ,  H04N19/174 ,  H04N19/139 ,  H04N19/13

CPC classification number: H04N19/13 ,  H03M7/4018 ,  H03M7/6011 ,  H04N19/126 ,  H04N19/139 ,  H04N19/146 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/42 ,  H04N19/46 ,  H04N19/70 ,  H04N19/91

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.

Abstract translation: 熵编码视频数据的示例方法包括：获得用于在上下文自适应熵编码处理中使用的多个上下文的上下文的预定义初始值，以熵编码视频数据片中语法元素的值， 其中预定义的初始化值以N位精度存储; 使用查找表并且基于预定义的初始化值来确定视频数据的切片的上下文的初始概率状态，其中上下文的可能概率状态的数量大于2 N的力量 以及基于上下文的初始概率状态的熵编码，用于语法元素的值的bin。

公开(公告)号：US09473779B2

公开(公告)日：2016-10-18

申请号：US14196479

申请日：2014-03-04

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Xiang Li ,  Jianle Chen ,  Ye-Kui Wang ,  Wei Pu

IPC: H04N19/436 ,  H04N19/33 ,  H04N19/17 ,  H04N19/50 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

CPC classification number: H04N19/17 ,  H04N19/33 ,  H04N19/436 ,  H04N19/50 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

Abstract: In one example, a device for coding video data includes a video coder configured to code data indicating whether tile boundaries of different layers of video data are aligned and whether inter-layer prediction is allowed along or across tile boundaries of enhancement layer blocks, code an enhancement layer block in an enhancement layer tile of the video data without using inter-layer prediction from a collocated base layer block for which inter-layer filtering or reference layer filtering across tile boundaries in a reference layer picture in an access unit including both the enhancement layer tile and the base layer block is enabled, and code the collocated base layer block.

Abstract translation: 在一个示例中，用于编码视频数据的设备包括：视频编码器，被配置为对表示视频数据的不同层的瓦片边界是否对准的数据进行编码，以及允许层间预测沿着或跨越增强层块的平铺边界，代码 增强层块在视频数据的增强层块中，而不使用来自并置基础层块的层间预测，对于该层次块来说，在包括增强的访问单元的访问单元中的参考层图像中的跨层过滤或跨平铺边界的参考层过滤 层瓦片和基层块被启用，并对并置的基层块进行编码。

公开(公告)号：US20160165237A1

公开(公告)日：2016-06-09

申请号：US15040864

申请日：2016-02-10

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang ,  Jianle Chen

IPC: H04N19/172 ,  H04N19/132 ,  H04N19/423 ,  H04N19/44 ,  H04N19/573 ,  H04N19/70 ,  H04N19/107 ,  H04N19/177

CPC classification number: H04N19/172 ,  H04N19/107 ,  H04N19/132 ,  H04N19/177 ,  H04N19/423 ,  H04N19/44 ,  H04N19/463 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70

Abstract: As one example, techniques for decoding video data include receiving a bitstream that includes one or more pictures of a coded video sequence (CVS), decoding a first picture according to a decoding order, wherein the first picture is a random access point (RAP) picture that is not an instantaneous decoding refresh (IDR) picture, and decoding at least one other picture following the first picture according to the decoding order based on the decoded first picture. As another example, techniques for encoding video data include generating a bitstream that includes one or more pictures of a CVS, wherein a first picture according to the decoding order is a RAP picture that is not an IDR picture, and avoiding including at least one other picture, other than the first picture, that corresponds to a leading picture associated with the first picture, in the bitstream.