公开(公告)号：US09621905B2

公开(公告)日：2017-04-11

申请号：US13841253

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Muhammed Zeyd Coban ,  Ye-Kui Wang

IPC: H04N19/174 ,  H04N19/176 ,  H04N19/70 ,  H04N19/436 ,  H04N19/46 ,  H04N19/61

CPC classification number: H04N19/174 ,  H04N19/176 ,  H04N19/436 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

Abstract: This disclosure describes techniques that may enable a video coder to simultaneously implement multiple parallel processing mechanisms, including two or more of wavefront parallel processing (WPP), tiles, and entropy slices. This disclosure describes signaling techniques that are compatible both with coding standards that only allow one parallel processing mechanism to be implemented at a time, but that are also compatible with potential future coding standards that may allow for more than one parallel processing mechanism to be implemented simultaneously. This disclosure also describes restrictions that may enable WPP and tiles to be implemented simultaneously.

公开(公告)号：US09426463B2

公开(公告)日：2016-08-23

申请号：US13761924

申请日：2013-02-07

Applicant: Qualcomm Incorporated

Inventor： Vadim Seregin ,  Xianglin Wang ,  Joel Sole Rojals ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/577 ,  H04N19/51 ,  H04N19/52 ,  H04N19/176 ,  H04N19/109

CPC classification number: H04N19/51 ,  H04N19/109 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/577

Abstract: A video coding device generates a motion vector (MV) candidate list for a prediction unit (PU) of a coding unit (CU) that is partitioned into four equally-sized PUs. The video coding device converts a bi-directional MV candidate in the MV candidate list into a uni-directional MV candidate. In addition, the video coding device determines a selected MV candidate in the merge candidate list and generates a predictive video block for the PU based at least in part on one or more reference blocks indicated by motion information specified by the selected MV candidate.

Abstract translation: 视频编码装置生成被划分为四个相同尺寸的PU的编码单元（CU）的预测单元（PU）的运动矢量（MV）候选列表。 视频编码装置将MV候选列表中的双向MV候选转换为单向MV候选。 此外，视频编码装置在合并候选列表中确定选定的MV候选，并且至少部分地基于由所选择的MV候选项指定的运动信息指示的一个或多个参考块生成用于PU的预测视频块。

公开(公告)号：US09332259B2

公开(公告)日：2016-05-03

申请号：US13718883

申请日：2012-12-18

Applicant: Qualcomm Incorporated

Inventor： Ye-Kui Wang ,  Muhammed Zeyd Coban

IPC: H04N19/90 ,  H04N19/46 ,  H04N19/463 ,  H04N19/436

CPC classification number: H04N19/90 ,  H04N19/436 ,  H04N19/46 ,  H04N19/463

Abstract: A video encoder generates a bitstream that includes a syntax element that indicates whether a picture is encoded according either a first coding mode or a second coding mode. In the first coding mode, the picture is entirely encoded using wavefront parallel processing (WPP). In the second coding mode, each tile of the picture is encoded without using WPP and the picture may have one or more tiles. A video decoder may parse the syntax element from the bitstream. In response to determining that the syntax element has a particular value, the video decoder decodes the picture entirely using WPP. In response to determining that the syntax element does not have the particular value, the video decoder decodes each tile of the picture without using WPP.

Abstract translation: 视频编码器生成包括指示是根据第一编码模式还是第二编码模式对图像进行编码的语法元素的比特流。 在第一编码模式下，使用波前并行处理（WPP）对图像进行完全编码。 在第二编码模式中，图像的每个图块被编码而不使用WPP，并且图片可以具有一个或多个图块。 视频解码器可以从比特流解析语法元素。 响应于确定语法元素具有特定值，视频解码器使用WPP完全解码图像。 响应于确定语法元素不具有特定值，视频解码器解码图像的每个图块而不使用WPP。

公开(公告)号：US20130202038A1

公开(公告)日：2013-08-08

申请号：US13761924

申请日：2013-02-07

Applicant: QUALCOMM INCORPORATED

Inventor： Vadim Seregin ,  Xianglin Wang ,  Joel Sole Rojals ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/51 ,  H04N19/109 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/577

Abstract: A video coding device generates a motion vector (MV) candidate list for a prediction unit (PU) of a coding unit (CU) that is partitioned into four equally-sized PUs. The video coding device converts a bi-directional MV candidate in the MV candidate list into a uni-directional MV candidate. In addition, the video coding device determines a selected MV candidate in the merge candidate list and generates a predictive video block for the PU based at least in part on one or more reference blocks indicated by motion information specified by the selected MV candidate.

Abstract translation: 视频编码装置生成被划分为四个相同尺寸的PU的编码单元（CU）的预测单元（PU）的运动矢量（MV）候选列表。 视频编码装置将MV候选列表中的双向MV候选转换为单向MV候选。 此外，视频编码装置在合并候选列表中确定选定的MV候选，并且至少部分地基于由所选择的MV候选项指定的运动信息指示的一个或多个参考块生成用于PU的预测视频块。

公开(公告)号：US20130182774A1

公开(公告)日：2013-07-18

申请号：US13718883

申请日：2012-12-18

Applicant: Qualcomm Incorporated

Inventor： Ye-Kui Wang ,  Muhammed Zeyd Coban

IPC: H04N7/26

CPC classification number: H04N19/90 ,  H04N19/436 ,  H04N19/46 ,  H04N19/463

Abstract: A video encoder generates a bitstream that includes a syntax element that indicates whether a picture is encoded according either a first coding mode or a second coding mode. In the first coding mode, the picture is entirely encoded using wavefront parallel processing (WPP). In the second coding mode, each tile of the picture is encoded without using WPP and the picture may have one or more tiles. A video decoder may parse the syntax element from the bitstream. In response to determining that the syntax element has a particular value, the video decoder decodes the picture entirely using WPP. In response to determining that the syntax element does not have the particular value, the video decoder decodes each tile of the picture without using WPP.

Abstract translation: 视频编码器生成包括指示是根据第一编码模式还是第二编码模式对图像进行编码的语法元素的比特流。 在第一编码模式下，使用波前并行处理（WPP）对图像进行完全编码。 在第二编码模式中，图像的每个图块被编码而不使用WPP，并且图片可以具有一个或多个图块。 视频解码器可以从比特流解析语法元素。 响应于确定语法元素具有特定值，视频解码器使用WPP完全解码图像。 响应于确定语法元素不具有特定值，视频解码器解码图像的每个图块而不使用WPP。

公开(公告)号：US20130121417A1

公开(公告)日：2013-05-16

申请号：US13672265

申请日：2012-11-08

Applicant: QUALCOMM INCORPORATED

Inventor： In Suk Chong ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/503 ,  H04N19/103 ,  H04N19/159 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/436 ,  H04N19/46

Abstract: A video encoder determines reference blocks for each inter-predicted prediction unit (PU) of a tree block group such that each of the reference blocks is in a reference picture that is in a reference picture subset for the tree block group. The reference picture subset for the tree block group includes less than all reference pictures in a reference picture set of the current picture. The tree block group comprises a plurality of concurrently-coded tree blocks in the current picture. For each inter-predicted PU of the tree block group, the video encoder indicates, in a bitstream that includes a coded representation of video data, a reference picture that includes the reference block for the inter-predicted PU. A video decoder receives the bitstream, determines the reference pictures of the inter-predicted PUs of the tree block group, and generates decoded video blocks using the reference blocks of the inter-predicted PUs.

Abstract translation: 视频编码器确定树块组的每个预测预测单元（PU）的参考块，使得每个参考块在参考图像中，该参考图像在树块组的参考图像子集中。 用于树块组的参考图像子集包括小于当前图像的参考图像集合中的所有参考图像。 树块组包括当前图片中的多个同时编码的树块。 对于树块组的每个相互预测的PU，视频编码器在包括视频数据的编码表示的比特流中指示包括用于帧间预测的PU的参考块的参考图片。 视频解码器接收比特流，确定树块组的预测间PU的参考图像，并且使用帧间预测PU的参考块生成解码的视频块。

公开(公告)号：US20130107952A1

公开(公告)日：2013-05-02

申请号：US13660635

申请日：2012-10-25

Applicant: Qualcomm Incorporated

Inventor： Muhammed Zeyd Coban ,  Ye-Kui Wang ,  Marta Karczewicz

IPC: H04N7/32

CPC classification number: H04N19/174 ,  H04N19/105 ,  H04N19/11 ,  H04N19/159 ,  H04N19/172 ,  H04N19/436 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70

Abstract: A video coder can control in-picture prediction across slice boundaries within a picture. In one example, a first syntax element can control if in-picture prediction across slice boundaries for slices of a picture. If in-picture prediction across slice boundaries is enabled for the picture, then a second syntax element can control, for an individual slices, if in-picture prediction across slice boundaries is enabled for the slice.

Abstract translation: 视频编码器可以控制图像内的切片边界的图像内预测。 在一个示例中，第一语法元素可以控制图片切片的切片边界中的图像内预测。 如果片段边界上的图像间预测被启用用于图像，则第二语法元素可以针对各个切片来控制切片边界上的图像间预测是否对切片启用。

公开(公告)号：US12301876B2

公开(公告)日：2025-05-13

申请号：US18321372

申请日：2023-05-22

Applicant: QUALCOMM Incorporated

Inventor： Alican Nalci ,  Hilmi Enes Egilmez ,  Vadim Seregin ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/645 ,  H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/70

Abstract: A video decoder determines, based on a block size of a current block and a low-frequency non-separable transform (LFNST) syntax element, a zero-out pattern of normatively defined zero-coefficients. The LFNST syntax element is signaled at a transform unit (TU) level. Additionally, the video decoder determines transform coefficients of the current block. The transform coefficients of the current block include transform coefficients in an LFNST region of the current block and transform coefficients outside the LFNST region of the current block. As part of determining the transform coefficients of the current block, the video decoder applies an inverse LFNST to determine values of one or more transform coefficients in the LFNST region of the current block. The video decoder also determines that transform coefficients of the current block in a region of the current block defined by the zero-out pattern are equal to 0.

公开(公告)号：US12184853B2

公开(公告)日：2024-12-31

申请号：US17109958

申请日：2020-12-02

Applicant: QUALCOMM Incorporated

Inventor： Alican Nalci ,  Hongtao Wang ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/12 ,  H04N19/103 ,  H04N19/13 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/61

Abstract: A video coder may determine a quantization parameter (QP) value for a block of video data, determine a residual coding method from a plurality of residual coding methods based on the QP value, wherein the plurality of residual coding methods include transform skip (TS) residual coding and regular residual coding, and code a residual of the block of video data using the determined residual coding method.

公开(公告)号：US12149747B2

公开(公告)日：2024-11-19

申请号：US18168925

申请日：2023-02-14

Applicant: QUALCOMM Incorporated

Inventor： Alican Nalci ,  Marta Karczewicz ,  Muhammed Zeyd Coban

IPC: H04N19/70 ,  H04N19/124 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46

Abstract: An example device includes memory and one or more processors implemented in circuitry and communicatively coupled to the memory. The one or more processors are configured to receive a first slice header syntax element for a slice of the video data and determine a first value for the first slice header syntax element, the first value being indicative of whether dependent quantization is enabled. The one or more processors are configured to receive a second slice header syntax element for the slice of the video data and determine a second value for the second slice header syntax element, the second value being indicative of whether sign data hiding is enabled. The one or more processors are configured to determine whether transform skip residual coding is disabled for the slice based on the first value and the second value and decode the slice based on the determinations.