公开(公告)号：US20130107942A1

公开(公告)日：2013-05-02

申请号：US13664057

申请日：2012-10-30

Applicant: Qualcomm Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/66 ,  H04N19/463 ,  H04N19/70

Abstract: A video encoder generates a first network abstraction layer (NAL) unit. The first NAL unit contains a first fragment of a parameter set associated with video data. The video encoder also generates a second NAL unit. The second NAL unit contains a second fragment of the parameter set. A video decoder may receive a bitstream that includes the first and second NAL units. The video decoder decodes, based at least in part on the parameter set, one or more coded pictures of the video data.

Abstract translation: 视频编码器生成第一网络抽象层（NAL）单元。 第一个NAL单元包含与视频数据相关联的参数集的第一个片段。 视频编码器还产生第二NAL单元。 第二个NAL单元包含参数集的第二个片段。 视频解码器可以接收包括第一和第二NAL单元的比特流。 视频解码器至少部分地基于参数集来解码视频数据的一个或多个编码图像。

公开(公告)号：US20130101035A1

公开(公告)日：2013-04-25

申请号：US13658453

申请日：2012-10-23

Applicant: Qualcomm Incorporated

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

IPC: H04N7/32 ,  H04N7/26

CPC classification number: H04N19/436 ,  H04N19/17 ,  H04N19/174 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/895

Abstract: Techniques described herein for coding video data include techniques for coding pictures partitioned into tiles, in which each of the plurality of tiles in a picture is assigned to one of a plurality of tile groups. One example method for coding video data comprising a picture that is partitioned into a plurality tiles comprises coding video data in a bitstream, and coding, in the bitstream, information that indicates one of a plurality of tile groups to which each of the plurality of tiles is assigned. The techniques for grouping tiles described herein may facilitate improved parallel processing for both encoding and decoding of video bitstreams, improved error resilience, and more flexible region of interest (ROI) coding.

Abstract translation: 本文描述的用于编码视频数据的技术包括用于对分割成瓦片的图像进行编码的技术，其中将图片中的多个瓦片中的每一个分配给多个瓦片组中的一个。 用于编码视频数据的一个示例性方法包括分割成多个片的图像包括：对比特流中的视频数据进行编码，以及在比特流中编码指示多个瓦片组中的每一个的多个瓦片组之一的信息 被分配。 用于分组的瓦片的技术可以促进对视频比特流的编码和解码的改进的并行处理，改善的错误弹性以及更灵活的感兴趣区域（ROI）编码。

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：US20250119556A1

公开(公告)日：2025-04-10

申请号：US18889977

申请日：2024-09-19

Applicant: QUALCOMM Incorporated

Inventor： Yun Li ,  Dmytro Rusanovskyy ,  Thomas Alexander Ryder ,  Samuel James Eadie ,  Marta Karczewicz

IPC: H04N19/176 ,  G06T9/00 ,  H04N19/117 ,  H04N19/159 ,  H04N19/82

Abstract: A method of processing video data includes receiving a picture; and filtering a current block of the picture, through a neural network and based on local correlations of proximate samples and distant, non-local correlations of non-proximate samples relative to the current block, to generate a filtered current block. The neural network comprises one or more backbone blocks and one or more transformer blocks. Each of the one or more transformer blocks is associated with a backbone block of the one or more backbone blocks. At least one of the backbone blocks is configured to capture the local correlations, relative to the current block and the proximate samples of the current block, and at least one of the transformer blocks is configured to generate features, based on applying an attention mechanism, that capture the distant, non-local correlations, relative to the current block and the non-proximate samples, in the picture for processing.

公开(公告)号：US20250119548A1

公开(公告)日：2025-04-10

申请号：US18982465

申请日：2024-12-16

Applicant: QUALCOMM Incorporated

Inventor： Keming Cao ,  Nan Hu ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176 ,  H04N19/593

Abstract: A method of encoding or decoding video data comprises: for each respective intra prediction mode of a plurality of intra prediction modes in a most-probable mode (MPM) list: generating, based on reference samples for a template region and using the respective intra prediction mode, prediction samples for the template region; and determining a cost for the respective intra prediction mode; determining a first intra prediction mode and a second intra prediction mode in the MPM list having lowest costs; determining a preliminary prediction block for the first intra prediction mode and a preliminary prediction block for the second intra prediction mode; generating a prediction block based on a fusion of the preliminary prediction blocks weighted according to a weight for the first intra prediction mode and a weight for the second intra prediction mode.

公开(公告)号：US20250119528A1

公开(公告)日：2025-04-10

申请号：US18904743

申请日：2024-10-02

Applicant: QUALCOMM Incorporated

Inventor： Po-Han Lin ,  Jian-Liang Lin ,  Yao-Jen Chang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70

Abstract: A device for decoding encoded video data is configured to determine that a chroma block of the encoded video data is coded in a cross-component prediction (CCP) mode; generate a merge candidate list for the chroma block, wherein the merge candidate list includes at least two prediction candidates generated by different CCP modes and a third prediction candidate, wherein the third prediction candidate comprises a fusion prediction candidate; receive, in the encoded video data, a syntax element set to a value; select a prediction candidate from the merge candidate list based on the value of the syntax element; determine a prediction block for the chroma block based on the selected prediction candidate; determine a decoded block of video data based on the prediction block for the chroma block; and output a decoded picture of video data that includes the decoded block of video data.

公开(公告)号：US20250047884A1

公开(公告)日：2025-02-06

申请号：US18365854

申请日：2023-08-04

Applicant: QUALCOMM Incorporated

Inventor： Cheng-Teh Hsieh ,  Han Huang ,  Chun-Chi Chen ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

Abstract: A video decoder may be configured to receive a block of video data that was encoded using a coding mode that includes a search process in one or more reference frames. The video decoder may prefetch reference samples in a fixed search region of at least one reference frame of the one or more reference frames, and decode the block of video data using the coding mode, including performing the search process for the coding mode using the prefetched reference samples.

公开(公告)号：US20250016326A1

公开(公告)日：2025-01-09

申请号：US18741129

申请日：2024-06-12

Applicant: QUALCOMM Incorporated

Inventor： Zhi Zhang ,  Chun-Chi Chen ,  Han Huang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: A video decoder can be configured to determine that a current block of the video data is coded in a bi-prediction inter mode; receive a first syntax element identifying a motion vector predictor from a first candidate list of motion vector predictors; receive a second syntax element identifying a motion vector difference; determine a first motion vector for the current block based on the motion vector predictor and the motion vector difference; determine a second motion vector for the current block from a second list of candidate motion vector predictors based on bilateral matching; and determine a prediction block for the current block using the first motion vector and the second motion vector.

公开(公告)号：US12192311B2

公开(公告)日：2025-01-07

申请号：US17342249

申请日：2021-06-08

Applicant: QUALCOMM Incorporated

Inventor： Bappaditya Ray ,  Geert Van der Auwera ,  Adarsh Krishnan Ramasubramonian ,  Louis Joseph Kerofsky ,  Marta Karczewicz

IPC: G06T9/00 ,  H04L47/12 ,  H04L65/70 ,  H04L69/04 ,  H04N19/186 ,  H04N19/70

Abstract: An example method of encoding a point cloud includes determining that residual values for all components except one component of an attribute of a point in the point cloud are equal to zero; based on the determination that the residual values for all components except the one component of the attribute are equal to zero, determining a value for the one component that is equal to a magnitude of a residual value of the one component of the attribute minus an offset; encoding the value of the one component; and signaling the encoded value in a bitstream.