公开(公告)号：US20230377208A1

公开(公告)日：2023-11-23

申请号：US18318498

申请日：2023-05-16

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/00 ,  G06T3/40 ,  G06T9/40

CPC classification number: G06T9/002 ,  G06T3/40 ,  G06T9/40

Abstract: An example device for decoding point cloud data includes a memory configured to store point cloud data; and one or more processors implemented in circuitry and configured to: determine a number of times to upscale a downscaled encoded representation of a point cloud geometry; decode the downscaled encoded representation of the point cloud geometry; upscale the downscaled representation of the point cloud geometry the number of times to form an upscaled representation of the point cloud geometry; and reproduce a point cloud using the upscaled representation of the point cloud geometry.

公开(公告)号：US20230345045A1

公开(公告)日：2023-10-26

申请号：US18303390

申请日：2023-04-19

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  G06T19/00

CPC classification number: H04N19/597 ,  G06T19/006

Abstract: A device for encoding or decoding point cloud data may be configured to, responsive to determining to predict a current point in a current frame using an inter prediction mode: identify a reference frame; derive one or more motion compensated reference points from the reference frame; selectively resample points in the reference frame based on the one or more motion compensated reference points to generate a resampled reference frame; and inter predict the current point in the current frame based on the resampled reference frame.

公开(公告)号：US20230342984A1

公开(公告)日：2023-10-26

申请号：US18304268

申请日：2023-04-20

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/00

CPC classification number: G06T9/001

Abstract: A device for encoding a point cloud comprises a memory configured to store point cloud data for the point cloud; and one or more processors configured to: determine a residual value associated with a current point of the point cloud, the residual value associated with the current point being a radius residual or an azimuth residual; determine a context for entropy encoding the residual value based on whether the current point is coded with intra prediction or inter prediction; and entropy encode the residual value using the determined context.

公开(公告)号：US11743501B2

公开(公告)日：2023-08-29

申请号：US17223789

申请日：2021-04-06

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 ,  H04N19/136 ,  H04N19/174 ,  H04N19/597

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：US11729428B2

公开(公告)日：2023-08-15

申请号：US17482012

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N19/31 ,  H04N13/161

CPC classification number: H04N19/70 ,  H04N13/161 ,  H04N19/31

Abstract: Example devices and techniques are disclosed for incorporating temporal identification information in geometry point cloud compression syntax structures. 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 communicatively coupled to the memory. The one or more processors are configured to determine a value of a temporal identifier (ID) of a syntax structure and decode the point cloud data based on the value of the temporal ID. The temporal ID of the syntax structure identifies a temporal layer to which point cloud data associated with the syntax structure belongs.

公开(公告)号：US11695940B2

公开(公告)日：2023-07-04

申请号：US17653086

申请日：2022-03-01

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/00 ,  H04N19/176 ,  H04N19/159 ,  H04N19/11

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/159

Abstract: A video coder performs a Most-Probable Mode (MPM) derivation process that derives one or more MPMs for a current block that is not coded using affine linear weighted intra prediction (ALWIP). As part of performing the MPM derivation process, the video coder determines whether a neighboring block of the current block is an ALWIP-coded neighboring block. Based on the neighboring block being an ALWIP-coded neighboring block, the video coder determines that a value of an intra prediction mode of the neighboring block is a value indicating a planar mode. The video coder codes the current block based on one of the MPMs for the current block.

公开(公告)号：US11657543B2

公开(公告)日：2023-05-23

申请号：US17224674

申请日：2021-04-07

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/20

CPC classification number: G06T9/20

Abstract: An example device for processing point cloud data includes a 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 count a number of edges of a cube of point cloud data comprising a vertex. The one or more processors are configured to set a variable based on a total of the counting. The one or more processors are also configured to process the point cloud data based on the variable.

公开(公告)号：US20230018907A1

公开(公告)日：2023-01-19

申请号：US17810106

申请日：2022-06-30

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/159 ,  H04N19/109 ,  H04N19/13 ,  H04N19/196 ,  H04N19/105 ,  H04N19/172 ,  H04N19/167

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 whether inter prediction data is coded for a current node of an octree of the point cloud data; determine whether planar mask data is coded for the current node; when at least one of the inter prediction data or the planar mask data is coded for the current node, avoid coding a single occupancy value for the current node, the single occupancy value indicating whether only a single sub-node of the current node includes a point; and code the current node. The processors may also be configured to determine a context for entropy coding the planar mask data according to planar mask data for a collocated node in a reference frame when the planar mask data is coded.

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：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.