公开(公告)号：US20240233195A1

公开(公告)日：2024-07-11

申请号：US18563146

申请日：2022-06-10

Applicant: PENG CHENG LABORATORY

Inventor： Jing Wang ,  Qi Zhang ,  Yueru Chen ,  Ge Li ,  Wen Gao

IPC: G06T9/00

CPC classification number: G06T9/001

Abstract: A point cloud attribute prediction method and apparatus, a terminal and a storage medium are disclosed. The method includes obtaining target neighbor points corresponding to a target point by a first spatial distance, and determining an optimization weight corresponding to each target neighbor point respectively based on a second spatial distance, and finally determining an attribute prediction value corresponding to the target point based on each target neighbor point and optimization weight corresponding to each target neighbor point respectively. The present disclosure optimizes the weight corresponding to each target neighbor point respectively based on the spatial distance, which can improve the correlation between the geometry information and the attribute information of the point cloud, provide more accurate prediction values when performing point cloud attribute prediction, and thus improve the encoding and decoding performance of the point cloud attributes.

公开(公告)号：US20240233194A1

公开(公告)日：2024-07-11

申请号：US18562799

申请日：2022-06-10

Applicant: PENG CHENG LABORATORY

Inventor： Yueru Chen ,  Jing Wang ,  Ge Li ,  Wen Gao

IPC: G06T9/00

CPC classification number: G06T9/001

Abstract: A point cloud attribute encoding method and apparatus, a decoding method and apparatus, and a related device are disclosed. The point cloud attribute encoding method includes: sorting all point cloud data to be encoded to acquire sorted point cloud data, the point cloud data to be encoded being point cloud data with attributes to be encoded; grouping the sorted point cloud data based on correlation between the sorted point cloud data to acquire groups to be encoded; and performing point cloud attribute encoding based on the groups to be encoded. It is beneficial for enhancing the correlation between point cloud data within the group, improving the efficiency of decorrelation during intra group transform after grouping, and improving coding efficiency.

公开(公告)号：US20240371046A1

公开(公告)日：2024-11-07

申请号：US18683359

申请日：2022-08-23

Applicant: PENG CHENG LABORATORY

Inventor： Yueru Chen ,  Jing Wang ,  Ge Li ,  Wen Gao

IPC: G06T9/00

Abstract: A point cloud attribute encoding method and apparatus, decoding method and apparatus are disclosed. The point cloud attribute encoding method includes: sorting point cloud data to be encoded to obtain sorted point cloud data; constructing a multilayer structure based on the sorted point cloud data and distances between the sorted point cloud data; obtaining an encoding mode corresponding to each of nodes in the multilayer structure. The encoding mode corresponding to each of the nodes is a direct encoding mode, a predictive encoding mode, or a transform encoding mode. The predictive encoding mode is to encode a node based on information of a neighboring node corresponding to the node. The transform encoding mode is to encode the node based on a transform matrix; and encoding point cloud attributes for each of the nodes based on the multilayer structure and the respective encoding mode.