公开(公告)号：US20240296628A1

公开(公告)日：2024-09-05

申请号：US18112434

申请日：2023-02-21

Applicant: Tencent America LLC

Inventor： Xifeng GAO ,  Zhen CHEN ,  Zherong PAN ,  Kui WU

IPC: G06T17/20 ,  G06T5/00 ,  G06T17/00 ,  G06T17/10 ,  G06T19/20

CPC classification number: G06T17/205 ,  G06T5/70 ,  G06T17/005 ,  G06T17/10 ,  G06T19/20 ,  G06T2207/20072 ,  G06T2210/12 ,  G06T2210/21

Abstract: A method of generating an iso-surface mesh for a three-dimensional (3D) model is provided. In the method a plurality of voxels is generated in a bounding box of an input mesh, where a size of each of the plurality of voxels is based on a size of the bounding box of the input mesh and an iso-value. One or more iso-surfaces in each of the plurality of voxels are determined based on an unsigned distance function and the iso-value. One or more feature points in each of the plurality of voxels are determined based on the one or more iso-surfaces in the respective voxel and a constraint function. A feature mesh is generated based on the determined one or more feature points, and an edge flip operation is performed on each of a plurality of edges of the feature mesh to generate the iso-surface mesh.

公开(公告)号：US20240296629A1

公开(公告)日：2024-09-05

申请号：US18112445

申请日：2023-02-21

Applicant: Tencent America LLC

Inventor： Xifeng GAO ,  Zhen CHEN ,  Zherong PAN ,  Kui WU

IPC: G06T17/20 ,  G06T17/00 ,  G06T19/20

CPC classification number: G06T17/205 ,  G06T17/005 ,  G06T19/20 ,  G06T2219/2004

Abstract: According to an aspect of the disclosure, a method of generating a low-poly mesh for a three-dimensional (3D) model is provided. In the method, an edge-collapse operation is performed on each of a plurality of edges of an input mesh to generate a simplified mesh in which a number of faces of the input mesh is reduced by the edge-collapse operation. A position of at least one vertex of the simplified mesh is updated to generate an updated mesh in which a distance between the simplified mesh and the input mesh is reduced. The low-poly mesh is generated based on an aligned mesh in which positions of vertices of the updated mesh are optimized by minimizing a shape difference between the simplified mesh and the updated mesh.