公开(公告)号：US11671595B2

公开(公告)日：2023-06-06

申请号：US16813508

申请日：2020-03-09

Applicant: QUALCOMM Incorporated

Inventor： Luong Pham Van ,  Geert Van der Auwera ,  Adarsh Krishnan Ramasubramonian ,  Han Huang ,  Marta Karczewicz

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

Abstract: A method of decoding video data includes determining, by one or more processors implemented in circuitry, a partition of the video data into a plurality of blocks. The partition of the video data applies a block size restriction to prevent a splitting of a block of the plurality of blocks that would result in a small block comprising a block width and a block height when the block height times the block width is less than a threshold. The method further includes generating, by the one or more processors, prediction information for the block and determining, by the one or more processors, a predicted block for the block based on the prediction information. The method further includes decoding, by the one or more processors, a residual block for the block and combining, by the one or more processors, the predicted block and the residual block to decode the block.

公开(公告)号：US20230162406A1

公开(公告)日：2023-05-25

申请号：US18158135

申请日：2023-01-23

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/00 ,  G06T15/30 ,  H04N19/124

CPC classification number: G06T9/001 ,  G06T15/30 ,  H04N19/124 ,  G06T9/00

Abstract: In some examples, a method of decoding a point cloud includes decoding an initial QP value from an attribute parameter set. The method also includes determining a first QP value for a first component of an attribute of point cloud data from the initial QP value. The method further includes determining a QP offset value for a second component of the attribute of the point cloud data and determining a second QP value for the second component of the attribute from the first QP value and from the QP offset value. The method includes decoding the point cloud data based on the first QP value and further based on the second QP value.

公开(公告)号：US20230102401A1

公开(公告)日：2023-03-30

申请号：US17934860

申请日：2022-09-23

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/00

Abstract: An example method of encoding a point cloud includes, responsive to determining that a first point of the point cloud is a first point in a first group of points of one or more groups of points of the point cloud, encoding, in a bitstream, one or more syntax elements related to inter prediction for the first group of points. The example method may further include, responsive to determining that a second point of the point cloud is included in the first group of points but is not the first point in the first group of points, skip re-encoding, for the second point, the one or more syntax elements related to inter prediction for the first group of points.

公开(公告)号：US20230099908A1

公开(公告)日：2023-03-30

申请号：US17933300

申请日：2022-09-19

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/40

Abstract: An example device for coding point cloud data includes a memory configured to store point cloud data; and one or more processors implemented in circuitry and configured to: determine at least one of 1) that a node of an octree of the point cloud data is not inter predictable or 2) that angular mode is enabled for the node; in response to determining the at least one of 1) that the node is not inter predictable or 2) that angular mode is enabled for the node, determine an inferred direct coding mode (IDCM) mode for the node; and code occupancy data of the node using the determined IDCM mode.

公开(公告)号：US11562509B2

公开(公告)日：2023-01-24

申请号：US17224827

申请日：2021-04-07

Applicant: QUALCOMM Incorporated

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

IPC: G06T15/30 ,  H04N19/124 ,  G06T9/00

Abstract: In some examples, a method of decoding a point cloud includes decoding an initial QP value from an attribute parameter set. The method also includes determining a first QP value for a first component of an attribute of point cloud data from the initial QP value. The method further includes determining a QP offset value for a second component of the attribute of the point cloud data and determining a second QP value for the second component of the attribute from the first QP value and from the QP offset value. The method includes decoding the point cloud data based on the first QP value and further based on the second QP value.

公开(公告)号：US11463737B2

公开(公告)日：2022-10-04

申请号：US17179145

申请日：2021-02-18

Applicant: QUALCOMM Incorporated

Inventor： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

IPC: H04N19/85 ,  H04N19/172 ,  H04N19/70 ,  H04N19/186 ,  H04N19/43

Abstract: An example device includes a memory configured to store 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 a first dynamic range adjustment (DRA) adaptation parameter set (APS) for a first picture of the video data and assign a first DRA APS ID to the first DRA APS. The one or more processors are configured to determine a second DRA APS for a second picture of the video data and assign a second DRA APS ID to the second DRA APS. The one or more processors are configured to process the second picture in accordance with the first DRA APS if the first DRA APS ID and the second DRA APS ID are equal.

公开(公告)号：US11463688B2

公开(公告)日：2022-10-04

申请号：US17115544

申请日：2020-12-08

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/107 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

Abstract: A video decoder can be configured to receive, for a first chroma component of a block of the video data, information for first residual samples that correspond to a difference between a first chroma block of the first chroma component and a first prediction block of the first chroma component; determine intermediate reconstructed samples based on the first residual samples; receive, for a second chroma component of the block of video data, information for second residual samples that correspond to a difference between a second chroma block of the second chroma component and the intermediate reconstructed samples; reconstruct the first chroma block based on the first residual samples and the first prediction block; reconstruct the second chroma block based on the second residual samples and the intermediate reconstructed samples; and output decoded video data comprising the reconstructed first chroma block and the reconstructed second chroma block.

公开(公告)号：US20220210480A1

公开(公告)日：2022-06-30

申请号：US17562398

申请日：2021-12-27

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/107 ,  H04N19/46

Abstract: A device for decoding a bitstream that includes point cloud data is configured to determine an octree that defines an octree-based splitting of a space containing the point cloud, wherein a leaf node of the octree contains one or more points of the point cloud; and directly decode positions of each of the one or more points in the leaf node, wherein to directly decode the positions of each of the one or more points in the leaf node, the one or more processors are further configured to: generate a prediction of the one or more points; and determine the one or more points based on the prediction.

公开(公告)号：US20220114763A1

公开(公告)日：2022-04-14

申请号：US17469704

申请日：2021-09-08

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/00 ,  G06T9/40 ,  G06T3/40 ,  G01S17/89

Abstract: A method of encoding point cloud data includes determining an amount by which a laser turns for determining points in a point cloud represented by the point cloud data, generating a syntax element indicative of the amount by which the laser turns, wherein a value of the syntax element is a defined value less than the amount by which the laser turns, and signaling the syntax element.

公开(公告)号：US11277644B2

公开(公告)日：2022-03-15

申请号：US16459024

申请日：2019-07-01

Applicant: QUALCOMM Incorporated

Inventor： Geert Van der Auwera ,  Adarsh Krishnan Ramasubramonian ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/82 ,  H04N19/105 ,  H04N19/176

Abstract: A video coder is configured to determine whether a condition is true for a block of a current picture of the video data. Based on the condition being true for the block, the video coder may apply a non-smoothing interpolation filter to unfiltered reference samples of the first block to generate predictive samples of the block. Based on the condition being false for the block, the video coder may apply a smoothing interpolation filter to unfiltered reference samples of the second block to generate predictive samples of the second block.