公开(公告)号：US20130177084A1

公开(公告)日：2013-07-11

申请号：US13736734

申请日：2013-01-08

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Xianglin Wang

IPC: H04N7/26

CPC classification number: H04N19/176 ,  H04N19/109 ,  H04N19/136 ,  H04N19/147 ,  H04N19/513 ,  H04N19/70

Abstract: This disclosure proposes techniques for motion vector scaling. In particular, this disclosure proposes that both an implicit motion vector scaling process (e.g., the POC-based motion vector scaling process described above), as well as an explicit motion vector (e.g., a motion vector scaling process using scaling weights) may be used to perform motion vector scaling. This disclosure also discloses example signaling methods for indicating the type of motion vector scaling used.

Abstract translation: 本公开提出了用于运动矢量缩放的技术。 特别地，本公开提出，隐式运动矢量缩放处理（例如，上述基于POC的运动矢量缩放处理）以​​及显式运动矢量（例如，使用缩放权重的运动矢量缩放处理）可以是 用于执行运动矢量缩放。 本公开还公开了用于指示使用的运动矢量缩放的类型的示例信令方法。

公开(公告)号：US20130177083A1

公开(公告)日：2013-07-11

申请号：US13733736

申请日：2013-01-03

Applicant: Qualcomm Incorporated

Inventor： Jianle Chen ,  Xianglin Wang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/70 ,  H04N19/52

Abstract: A video encoder generates a first and a second candidate list. The first candidate list includes a plurality of motion vector (MV) candidates. The video encoder selects, from the first candidate list, a MV candidate for a first prediction unit (PU) of a coding unit (CU). The second MV candidate list includes each of the MV candidates of the first MV candidate list except the MV candidate selected for the first PU. The video encoder selects, from the second MV candidate list, a MV candidate for a second PU of the CU. A video decoder generates the first and second MV candidate lists in a similar way and generates predictive sample blocks for the first and second PUs based on motion information of the selected MV candidates.

Abstract translation: 视频编码器生成第一和第二候选列表。 第一候选列表包括多个运动矢量（MV）候选。 视频编码器从第一候选列表中选择用于编码单元（CU）的第一预测单元（PU）的MV候选。 第二MV候选列表包括除了为第一PU选择的MV候选之外的第一MV候选列表的MV候选中的每一个。 视频编码器从第二MV候选列表中选择CU的第二PU的MV​​候选。 视频解码器以类似的方式生成第一和第二MV候选列表，并且基于所选择的MV候选的运动信息生成第一和第二PU的预测采样块。

公开(公告)号：US20130170553A1

公开(公告)日：2013-07-04

申请号：US13733757

申请日：2013-01-03

Applicant: QUALCOMM Incorporated

Inventor： Jianle Chen ,  Vadim Seregin ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/52 ,  H04N19/13 ,  H04N19/50

Abstract: The techniques described in this disclosure may be generally related to identifying when motion vector difference (MVD) is skipped for one or both reference picture lists. The techniques may further relate to contexts for signaling MVD values. The techniques may also be related to syntax that indicates when at least one of the MVD values is zero.

Abstract translation: 本公开中描述的技术通常可以与识别何时针对一个或两个参考图片列表跳过运动矢量差异（MVD）的情况相关。 这些技术可以进一步涉及用于信令MVD值的上下文。 这些技术还可能与指示何时至少一个MVD值为零的语法有关。

公开(公告)号：US20130163664A1

公开(公告)日：2013-06-27

申请号：US13722474

申请日：2012-12-20

Applicant: QUALCOMM INCORPORATED

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/593 ,  H04N19/61

Abstract: In an example, aspects of this disclosure relate to a method for coding video data that includes predicting a first non-square partition of a current block of video data using a first intra-prediction mode, where the first non-square partition has a first size. The method also includes predicting a second non-square partition of the current block of video data using a second intra-prediction mode, where the second non-square partition has a second size different than the first size. The method also includes coding the current block based on the predicted first and second non-square partitions.

Abstract translation: 在一个示例中，本公开的方面涉及用于对视频数据进行编码的方法，其包括使用第一帧内预测模式来预测当前视频数据块的第一非正方形分区，其中第一非正方形分区具有第一 尺寸。 该方法还包括使用第二帧内预测模式预测当前视频数据块的第二非正方形分区，其中第二非正方形分区具有与第一大小不同的第二大小。 该方法还包括基于预测的第一和第二非正方形分区对当前块进行编码。

公开(公告)号：US20130107970A1

公开(公告)日：2013-05-02

申请号：US13665559

申请日：2012-10-31

Applicant: Qualcomm Incorporated

Inventor： Xianglin Wang ,  Liwei Guo ,  Yunfei Zheng ,  Marta Karczewicz

IPC: H04N7/12

CPC classification number: H04N19/186 ,  H04N19/122 ,  H04N19/176 ,  H04N19/61 ,  H04N19/96

Abstract: A video encoding device is configured to obtain an N by N array of residual values for a luma component and a corresponding N/2 by N array of residual values for a chroma component. The video encoding device may partition the N/2 by N array of residual values for the chroma component into two N/2 by N/2 sub-arrays of chroma residual values. The video encoding device may further partition the sub-arrays of chroma residual values based on the partitioning of the array of residual values for the luma component. Video encoding device may perform a transform on each of the sub-arrays of chroma residual values to generate transform coefficients. A video decoding device may use data defining sub-arrays of transform coefficients to perform a reciprocal process to generate residual values.

Abstract translation: 视频编码装置被配置为获得亮度分量的残留值的N×N阵列和色度分量的残差值的对应N / 2乘以N阵列。 视频编码装置可以将色度分量的N / 2乘以N个残差值的阵列划分为N / 2个N / 2个色度残差子阵列。 视频编码设备还可以基于亮度分量的残差阵列的划分来进一步对色度残差的子阵列进行分区。 视频编码装置可以对色度残差值的每个子阵列执行变换，以产生变换系数。 视频解码装置可以使用定义变换系数的子阵列的数据来执行相互过程以产生残差值。

公开(公告)号：US20130101025A1

公开(公告)日：2013-04-25

申请号：US13655009

申请日：2012-10-18

Applicant: Qualcomm Incorporated

Inventor： Geert Van der Auwera ,  Marta Karczewicz ,  Xianglin Wang

IPC: H04N7/32

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/12 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82

Abstract: Techniques for coding video data include coding a plurality of blocks of video data, wherein at least one block of the plurality of blocks of video data is coded using a coding mode that is one of an intra pulse code modulation (IPCM) coding mode and a lossless coding mode. In some examples, the lossless coding mode may use prediction. The techniques further include assigning a non-zero quantization parameter (QP) value for the at least one block coded using the coding mode. The techniques also include performing deblocking filtering on one or more of the plurality of blocks of video data based on the coding mode used to code the at least one block and the assigned non-zero QP value for the at least one block.

Abstract translation: 用于对视频数据进行编码的技术包括对多个视频数据块进行编码，其中使用作为帧内脉码调制（IPCM）编码模式和编码模式之一的编码模式来对多个视频数据块中的至少一个块进行编码 无损编码模式。 在一些示例中，无损编码模式可以使用预测。 所述技术还包括为使用编码模式编码的至少一个块分配非零量化参数（QP）值。 所述技术还包括：基于用于对所述至少一个块进行编码的编码模式和所述至少一个块的所分配的非零QP值，对所述多个视频数据块中的一个或多个块执行去块滤波。

公开(公告)号：US20130101018A1

公开(公告)日：2013-04-25

申请号：US13653950

申请日：2012-10-17

Applicant: QUALCOMM INCORPORATED

Inventor： In Suk Chong ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/196 ,  H04N19/117 ,  H04N19/14 ,  H04N19/186 ,  H04N19/463 ,  H04N19/82

Abstract: This disclosure proposes techniques to allow more flexibility in filtering chroma components in the adaptive loop filter. In one example, a method for adaptive loop filtering includes performing luma adaptive loop filtering based for luma components of a block of pixels, and performing chroma adaptive loop filtering for chroma components of the block of pixels, wherein filter coefficients for both the luma adaptive loop filtering and chroma adaptive loop filtering are derived from a block-based mode or a region-based mode. The method may further include determining to perform luma adaptive loop filtering on the block of pixels, and determining to perform chroma adaptive loop filtering on the block of pixels, wherein the determining to perform chroma adaptive loop filtering is performed independently of determining to perform luma adaptive loop filtering.

Abstract translation: 本公开提出了在自适应环路滤波器中滤除色度分量的更多灵活性的技术。 在一个示例中，用于自适应环路滤波的方法包括基于像素块的亮度分量执行亮度自适应环路滤波，并且对像素块的色度分量执行色度自适应环路滤波，其中亮度自适应环路的滤波器系数 从基于块的模式或基于区域的模式导出滤波和色度自适应环路滤波。 该方法还可以包括确定对像素块执行亮度自适应环路滤波，并且确定对像素块执行色度自适应环路滤波，其中执行色度自适应环路滤波的确定独立于确定执行亮度自适应 循环过滤。

公开(公告)号：US11166016B2

公开(公告)日：2021-11-02

申请号：US16722033

申请日：2019-12-20

Applicant: Qualcomm Incorporated

Inventor： Liwei Guo ,  Marta Karczewicz ,  Xianglin Wang

IPC: H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

Abstract: A video coder can be configured to determine an intra-prediction mode for a block of video data, identify a most probable transform based on the intra-prediction mode determined for the block of video data, and code an indication of whether the most probable transform is a transform used to encode the block of video data. The most probable transform can be a non-square transform.

公开(公告)号：US10390046B2

公开(公告)日：2019-08-20

申请号：US13670167

申请日：2012-11-06

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Xianglin Wang ,  Marta Karczewicz ,  Vadim Seregin

IPC: H04N19/70 ,  H04N19/196 ,  H04N19/129 ,  H04N19/12 ,  H04N19/156 ,  H04N19/625 ,  H04N19/463

Abstract: This disclosure describes techniques for coding significant coefficient information for a video block in a transform skip mode. The transform skip mode may provide a choice of a two-dimensional transform mode, a horizontal one-dimensional transform mode, a vertical one-dimensional transform mode, or a no transform mode. In other cases, the transform skip mode may provide a choice between a two-dimensional transform mode and a no transform mode. The techniques include selecting a transform skip mode for a video block, and coding significant coefficient information for the video block using a coding procedure defined based at least in part on the selected transform skip mode. Specifically, the techniques include using different coding procedures to code one or more of a position of a last non-zero coefficient and a significance map for the video block in the transform skip mode.

公开(公告)号：US20190068981A1

公开(公告)日：2019-02-28

申请号：US15684711

申请日：2017-08-23

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Cheng-Teh Hsieh ,  Xianglin Wang

IPC: H04N19/184 ,  H04N19/176 ,  H04N19/52 ,  H04N19/11 ,  H04N19/70 ,  H04N19/593 ,  H04N19/91

Abstract: An example device for accessing image data includes a memory configured to store image data, the memory comprising a first region and a second region, and one or more processing units implemented in circuitry and configured to code most significant bits (MSBs) of a plurality of residuals of samples of a block of an image, each of the residuals representing a respective difference value between a respective raw sample value and a respective predicted value for the respective raw sample value, access the coded MSBs in the first region of the memory, determine whether to represent the residuals using both the MSBs and least significant bits (LSBs) of the plurality of residuals of the samples, and in response to determining not to represent the residuals using the LSBs, prevent access of the LSBs in a second region of the memory.