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.

公开(公告)号：US20240331205A1

公开(公告)日：2024-10-03

申请号：US18624683

申请日：2024-04-02

Applicant: QUALCOMM Incorporated

Inventor： Anique Akhtar ,  Geert Van der Auwera ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

IPC: G06T9/00 ,  G06T9/40

CPC classification number: G06T9/001 ,  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: decode encoded point cloud geometry data for a point cloud to reconstruct point cloud geometry data for the point cloud; downscale the point cloud geometry data to form downscaled point cloud geometry data; and code attribute data for the point cloud using the downscaled point cloud geometry. When encoding the attribute data, the processors may encode the point cloud geometry data using a deep learning-based geometry encoder. When decoding the attribute data, the processors may upscale the downscaled point cloud attribute data. The processors may code a value representing an amount of downscaling to apply to the decoded point cloud geometry data.

公开(公告)号：US12003768B2

公开(公告)日：2024-06-04

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 ,  H04N19/105 ,  H04N19/124 ,  H04N19/136 ,  H04N19/156 ,  H04N19/184 ,  H04N19/30

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/124 ,  H04N19/136 ,  H04N19/156 ,  H04N19/184 ,  H04N19/30

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：US20240144543A1

公开(公告)日：2024-05-02

申请号：US18486541

申请日：2023-10-13

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/40

CPC classification number: G06T9/40

Abstract: An example device includes memory configured to store the point cloud data and one or more processors configured to determine a first point of the point cloud data to be a first node of a first prediction tree branch. The one or more processors are configured to determine that a first azimuth difference between the first point and a second point of the point cloud data does not meet a first azimuth threshold, and based on that determination, determine the second point to be a second node of the first prediction tree branch. The one or more processors are configured to determine that a second azimuth difference between a third point of the point cloud data and a fourth point of the point cloud data meets the first azimuth threshold and based on that determination, determine the fourth point to be a first node of a second prediction tree branch.

公开(公告)号：US11924428B2

公开(公告)日：2024-03-05

申请号：US17355904

申请日：2021-06-23

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/124 ,  H04N19/187 ,  H04N19/20 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/187 ,  H04N19/20 ,  H04N19/70

Abstract: A G-PCC encoder and G-PCC decoder may quantize and scale, respectively, a position of a child node. The G-PCC encoder may control the precision of the quantization and scaling using a quantization parameter (QP) value and a parameter value k, wherein the parameter value k specifies a number of QP points per doubling of a scaling step size to be used at the G-PCC decoder.

公开(公告)号：US11910021B2

公开(公告)日：2024-02-20

申请号：US17933953

申请日：2022-09-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N19/96 ,  H04N19/157

CPC classification number: H04N19/70 ,  H04N19/157 ,  H04N19/96

Abstract: A method of encoding point cloud data includes signaling at least one of: a first syntax element indicating that planar mode is disabled for a current node when angular mode is enabled; or a second syntax element indicating that angular mode is enabled for the current node; bypassing signaling of values for a planar mode for the current node in a condition where the first syntax element indicates that the planar mode is disabled for the current node when the angular mode is enabled, or in a condition where the second syntax element indicates that the angular mode is enabled for the current node; and encoding the current node in a mode other than the planar mode.

公开(公告)号：US20240029317A1

公开(公告)日：2024-01-25

申请号：US18350887

申请日：2023-07-12

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Reetu Hooda ,  Geert Van der Auwera ,  Marta Karczewicz

IPC: G06T9/00 ,  G06F5/01

CPC classification number: G06T9/001 ,  G06F5/01

Abstract: A point cloud encoder and point cloud decoder are configured to convert Cartesian coordinates of a point of point cloud data to spherical coordinates. The spherical coordinates include a radius, an azimuth value, and a laser ID. The point cloud encoder and point cloud decoder may perform the conversion for the azimuth value using a fixed-point implementation using a variable shift value based on a number of bits used for coding azimuth.

公开(公告)号：US20230379503A1

公开(公告)日：2023-11-23

申请号：US18362832

申请日：2023-07-31

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N19/119 ,  H04N19/597 ,  H04N19/136 ,  H04N19/174

CPC classification number: H04N19/70 ,  H04N19/119 ,  H04N19/597 ,  H04N19/136 ,  H04N19/174

Abstract: An example device for decoding point cloud data includes memory configured to store the point cloud data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors are configured to determine dimensions of a region box and determine dimensions of a slice bounding box. The one or more processors are also configured to decode a slice of the point cloud data associated with the slice bounding box. The dimensions of the region box are constrained to not exceed the dimensions of the slice bounding box.

公开(公告)号：US11671600B2

公开(公告)日：2023-06-06

申请号：US16998665

申请日：2020-08-20

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/119 ,  H04N19/186 ,  H04N19/105

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/176 ,  H04N19/186

Abstract: A method of decoding video data includes generating a prediction block for a current block of the video data and decoding a residual block for the current block of the video data. The method includes combining the prediction block and the residual block to generate a reconstructed block of the video data and determining a variable M×N sample pattern based on a block size of the current block. The method includes estimating a local luma level for samples of the reconstructed block using the variable M×N sample pattern and applying, based on the estimated local luma level, a deblocking filter to the samples of the reconstructed block to generate filtered samples. The method includes generating final samples of the video data based on the filtered samples.

公开(公告)号：US11652984B2

公开(公告)日：2023-05-16

申请号：US16684440

申请日：2019-11-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/423 ,  H04N19/136 ,  H04N19/132

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/423

Abstract: An example device for coding (encoding or decoding) video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: determine a first number of neighboring blocks to a current block of the video data that are intra-predicted; determine a second number of the neighboring blocks that are inter-predicted; determine a first weight value to be applied to intra-prediction samples of an intra-prediction block for the current block; determine a second weight value to be applied to inter-prediction samples of an inter-prediction block for the current block; generate a prediction block for the current block as a weighted combination of the intra-prediction block to which the first weight value is applied and the inter-prediction block to which the second weight value is applied; and code the current block using the prediction block.