公开(公告)号：US20250086894A1

公开(公告)日：2025-03-13

申请号：US18828649

申请日：2024-09-09

Applicant: DASSAULT SYSTEMES

Inventor： Baptiste NOBLET ,  Benoît SARTHOU ,  Antoine GUILLEMAIN ,  Nicolas GAZÈRES

IPC: G06T17/20

Abstract: A computer-implemented method for correcting topological defects on a surface mesh representing an organ homeomorphic to a sphere and obtained from a medical image. The method comprises applying a transformation to the surface mesh distributing positions of vertices of the surface mesh into a spherical point cloud and maintaining vertices neighborhoods. The method also comprises meshing the points of the spherical point cloud according to a triangular surface mesh presenting: the union of the triangles of the triangular surface mesh forms the convex hull of the points of the spherical point cloud and the intersection between any first triangle of the triangular surface mesh and any second triangle intersecting the first triangle is a vertex of the first triangle or an edge of the first triangle. The method also comprises mapping back the meshing onto the vertices of the surface mesh by reversing the transformation.