公开(公告)号：US11533491B2

公开(公告)日：2022-12-20

申请号：US16948008

申请日：2020-08-27

Applicant: QUALCOMM Incorporated

Inventor： Nan Hu ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/14 ,  H04N19/117 ,  H04N19/105 ,  H04N19/176 ,  H04N19/169

Abstract: An example device for coding video data includes a memory configured to store a block of video data and one or more processors, implemented in circuitry, and communicatively coupled to the memory. The one or more processors are configured to determine whether a transform and quantization are applied to the block of the video data and based on the transform and quantization not being applied to the block of video data, code the block of video data without applying bilateral filtering (BIF) or Hadamard transform domain filtering (HTDF).

公开(公告)号：US11503333B2

公开(公告)日：2022-11-15

申请号：US16762777

申请日：2018-11-14

Applicant: Qualcomm Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/56 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: A video decoder including one or more processors configured to receive one or more bits, in a bitstream, that indicate the encoded current block of video data was encoded based on a unified candidate list that includes motion vector candidates based on one or more translational motion vectors, and motion vector candidates based on one or more affine motion vectors. A merge index represented in the bitstream may indicate which candidate in the unified candidate list is associated with the motionvector of the encoded current block of video data. Based on the merge index, the one or more processors are configured to select one or more motion vectors of a candidate from the unified candidate list, based on the merge index, where the candidate has one or more of the motion vectors corresponding to the translational motion vectors or affine motion vectors within the unified candidate list.

公开(公告)号：US11496747B2

公开(公告)日：2022-11-08

申请号：US15926550

申请日：2018-03-20

Applicant: QUALCOMM Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Xiang Li ,  Marta Karczewicz

IPC: H04N7/18 ,  H04N19/159 ,  H04N19/176 ,  H04N19/11 ,  H04N19/593 ,  H04N19/61 ,  H04N19/139 ,  H04N19/463 ,  H04N19/105

Abstract: A method of decoding video data, including receiving a first block of video data encoded using an inter-prediction mode associating a first intra-prediction mode with the first block of video data, wherein the first intra-prediction mode is associated with a second block of video data, and determining a second intra-prediction mode for a neighbor block of video data based at least in part on the first intra-prediction mode.

公开(公告)号：US20220351420A1

公开(公告)日：2022-11-03

申请号：US17659219

申请日：2022-04-14

Applicant: QUALCOMM Incorporated

Inventor： Luong Pham Van ,  Geert Van der Auwera ,  Adarsh Krishnan Ramasubramonian ,  Bappaditya Ray ,  Marta Karczewicz

IPC: G06T9/00 ,  G06T17/00 ,  G01S17/89

Abstract: An example device for processing a point cloud includes: a memory configured to store at least a portion of the point cloud; and one or more processors implemented in circuitry and configured to: obtain planar information of a reference block of the point cloud; determine, based on the planar information of the reference block, a context; context-adaptive code, based on the context, a syntax element that indicates whether a current node is coded using a planar mode; code, based on the current node being coded using the planar mode, the current node using the planar mode.

公开(公告)号：US11477484B2

公开(公告)日：2022-10-18

申请号：US15188766

申请日：2016-06-21

Applicant: QUALCOMM Incorporated

Inventor： Amir Said ,  Xin Zhao ,  Wei-Jung Chien ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/61 ,  H04N19/117 ,  H04N19/82 ,  H04N19/593 ,  H04N19/10 ,  H04N19/192 ,  H04N19/436 ,  H04N19/615 ,  H04N19/70 ,  H04N19/80 ,  H04N19/91 ,  H04N19/86

Abstract: An example method of decoding video data includes obtaining, from a coded video bitstream and for a current block of the video data, an indication of an intra-prediction mode that identifies an initial predictive block; filtering, in parallel, samples in a current line of a plurality of lines of the initial predictive block based on filtered values of samples in a preceding line of the plurality of lines and unfiltered values of samples in the current line to generate filtered values for samples for the current line; and reconstructing, using intra prediction, values of samples of the current block based on the filtered values of the samples of the current initial predictive block and residual data for the current block that represents a difference between the filtered values of the samples of the current initial predictive block and the values of samples of the current block.

公开(公告)号：US20220329844A1

公开(公告)日：2022-10-13

申请号：US17809160

申请日：2022-06-27

Applicant: QUALCOMM Incorporated

Inventor： Luong Pham Van ,  Wei-Jung Chien ,  Vadim Seregin ,  Marta Karczewicz ,  Han Huang

IPC: H04N19/52 ,  H04N19/15 ,  H04N19/615 ,  H04N19/513

Abstract: An example device for coding video data includes a memory configured to store video data; and one or more processing units implemented in circuitry and configured to: store motion information for a first coding tree unit (CTU) line of a picture in a first history motion vector predictor (MVP) buffer of the memory; reset a second history MVP buffer of the memory; and after resetting the second history MVP buffer, store motion information for a second CTU line of the picture in the second history MVP buffer, the second CTU line being different than the first CTU line. Separate threads of a video coding process executed by the one or more processors may process respective CTU lines, in some examples.

公开(公告)号：US20220329819A1

公开(公告)日：2022-10-13

申请号：US17658385

申请日：2022-04-07

Applicant: QUALCOMM Incorporated

Inventor： Louis Joseph Kerofsky ,  Muhammed Zeyd Coban ,  Bappaditya Ray ,  Hilmi Enes Egilmez ,  Marta Karczewicz

IPC: H04N19/136 ,  H04N19/159 ,  H04N19/18 ,  H04N19/176

Abstract: A method of decoding video data includes determining an intra prediction mode from a plurality of intra prediction modes for a current block of the video data, determining a low frequency non-separable transform (LFNST) kernel from a plurality of LFNST kernels for the current block based on the determined intra prediction mode, wherein at least one LFNST kernel of the plurality of LFNST kernels is associated with at least two different intra prediction modes of the plurality of intra prediction modes, applying an inverse of the determined LFNST kernel to coefficient values generated from a transform unit (TU) of the current block to generate intermediate values, applying an inverse primary transform on the intermediate values to generate residual data, and reconstructing the current block based on the residual data.

公开(公告)号：US20220321913A1

公开(公告)日：2022-10-06

申请号：US17657867

申请日：2022-04-04

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/136 ,  H04N19/30 ,  H04N19/124 ,  H04N19/184 ,  H04N19/156 ,  H04N19/105

Abstract: A method of decoding point cloud data comprises obtaining a bitstream that is encoded to comply with one or more constraints and decoding the bitstream, wherein decoding the bitstream comprises: determining a residual value of a first component of an attribute of a point; generating a predicted value of a second component of the attribute of the point; and reconstructing the second component as a sum of the predicted value of the second component and a multiplication product of a scale factor for the second component and the residual value of the first component, wherein the constraints include a constraint that limits the first component of the attribute of the point, the residual value of the first component of the attribute of the point, the second component of the attribute, and the residual value of the second component of the attribute of the point to one or more predefined bitdepths.

公开(公告)号：US11457229B2

公开(公告)日：2022-09-27

申请号：US17128898

申请日：2020-12-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/64

Abstract: An example device includes memory configured to store video data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors determine whether a chroma block of the video data is encoded using dual tree partitioning. The one or more processors determine whether transform skip mode for the chroma block is enabled. The one or more processors, based on the chroma block being encoded using dual tree partitioning and transform skip mode being enabled for the chroma block, infer a value of a low-frequency non-separable transform (LFNST) index for the chroma block.

公开(公告)号：US20220303559A1

公开(公告)日：2022-09-22

申请号：US17653962

申请日：2022-03-08

Applicant: QUALCOMM Incorporated

Inventor： Dmytro Rusanovskyy ,  Marta Karczewicz

IPC: H04N19/196 ,  H04N19/176 ,  H04N19/30 ,  H04N19/70 ,  H04N19/18 ,  H04N19/60 ,  H04N19/12

Abstract: A video coder determines of shift values based on the dynamic range of a sum of absolute values of neighboring transform coefficients. The shift value may then be used to extend possible values of a Rice parameter used to binarize a syntax element related to a currently coded transform coefficient.