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：US20250119581A1

公开(公告)日：2025-04-10

申请号：US18882516

申请日：2024-09-11

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/18 ,  H04N19/60 ,  H04N19/70

Abstract: A device for decoding encoded mesh data is configured to receive, in a bitstream of the encoded mesh data, one or more syntax elements; determine an offset value based on the one or more syntax elements; determine a set of transform coefficients; apply the offset to the set of transform coefficients to determine a set of updated transform coefficients; inverse transform the set of updated transform coefficients to determine a set of displacement vectors; and determine a decoded mesh based on the set of displacement vectors.