公开(公告)号：US20210165934A1

公开(公告)日：2021-06-03

申请号：US17107540

申请日：2020-11-30

Applicant: DASSAULT SYSTEMES

Inventor： Nicolas MONTANA ,  Andre LIEUTIER ,  Marc MONTEIL

IPC: G06F30/20 ,  G06T11/20 ,  G06T7/155

Abstract: A computer-implemented method for civil engineering is described that includes obtaining a watershed segmentation of a terrain. The watershed segmentation includes basins. The method further includes merging first basins of the watershed segmentation that each verify a smallness criterion, each with a second basin downstream to the first basin.

公开(公告)号：US20210166398A1

公开(公告)日：2021-06-03

申请号：US17107032

申请日：2020-11-30

Applicant: DASSAULT SYSTEMES

Inventor： Nicolas MONTANA ,  Andre LIEUTIER ,  Marc MONTEIL

IPC: G06T7/155 ,  G06T7/187 ,  G06T17/20 ,  G06T17/05

Abstract: Computer-implemented method for civil engineering including obtaining a mesh representing a terrain and computing a watershed segmentation of the terrain based on the mesh, the computing of the watershed segmentation including identifying one or more saddle points on the mesh, for each identified saddle point, identifying paths each ascending from the saddle point according to a direction of a local maximal slope around the saddle point, and a path descending from the saddle point according to a direction of a steepest slope around the saddle point, the identified ascending paths dividing the mesh into connected components, and, for each identified saddle point, merging each connected component of which bottom point is the saddle point with a connected component including the identified path descending from the saddle point according to a direction of a steepest slope. The merging yields at least a part of a basin.

公开(公告)号：US20210165935A1

公开(公告)日：2021-06-03

申请号：US17107434

申请日：2020-11-30

Applicant: DASSAULT SYSTEMES

Inventor： Nicolas MONTANA ,  Andre LIEUTIER ,  Marc MONTEIL

IPC: G06F30/23 ,  G06F30/13 ,  G06T17/20 ,  G06T7/10

Abstract: A computer-implemented method for civil engineering including obtaining a mesh representing a terrain and a polyline on the mesh, the method further includes computing a contributor of the polyline. The computing of the contributor includes modifying the mesh by determining, based on the polyline, a trench below the polyline. The computing of the contributor further includes computing a watershed segmentation of the terrain based on the modified mesh. The computing of the contributor further includes, based on the computed watershed segmentation, identifying, on the modified mesh, a basin comprising the trench. The contributor corresponds to the identified basin.

公开(公告)号：US20180178446A1

公开(公告)日：2018-06-28

申请号：US15846289

申请日：2017-12-19

Applicant: DASSAULT SYSTEMES

Inventor： Romain NOSENZO ,  Richard MAISONNEUVE ,  Nicolas MONTANA

IPC: B29C64/153 ,  B29C64/386 ,  B33Y50/02 ,  G06T17/10

CPC classification number: B29C64/153 ,  B29C64/386 ,  B29C64/393 ,  B33Y50/02 ,  G06F17/50 ,  G06F2217/12 ,  G06T17/10 ,  Y02P90/265

Abstract: Disclosed is a computer-implemented method for determining a boundary representation of the result of a two-axis 3D printing process. The method comprises obtaining a stack of planes, each couple of consecutive planes corresponding to a respective slice of the result of the 3D printing process. The method also comprises, for each couple of consecutive planes: obtaining one or more respective tool trajectories, determining a respective 2D contour corresponding to the one or more tool trajectories. The method also comprises determining a respective extrusion of the respective 2D contour bounded by a second plane of the couple and a first plane of the couple, and forming the boundary representation with the extrusions and portions of the planes. The method improves 3D printing.

公开(公告)号：US20160179987A1

公开(公告)日：2016-06-23

申请号：US14975169

申请日：2015-12-18

Applicant: DASSAULT SYSTEMES

Inventor： Marie-Helene WALLE ,  Nicolas MONTANA

IPC: G06F17/50 ,  G06F17/10

CPC classification number: G06F17/50 ,  G06F17/10 ,  G06T17/30 ,  G06T19/20

Abstract: It is provided a computer-implemented method for designing a 3D modeled object, comprising providing, to a computer system, a NURBS surface that represents the 3D modeled object and that is defined by a grid of control points; determining (S20), by the computer system, a grid of surface points that belong to the NURBS surface, the grid of surface points corresponding to the grid of control points according to a predetermined invertible function; displaying, by the computer system, the NURBS surface and, on the NURBS surface, the grid of surface points; selecting, by graphical user-interaction, a subset of the surface points; modifying, by graphical user-interaction, position of the selected subset of surface points, and accordingly, updating real-time, by the computer system, the surface, the update being performed according to the predetermined invertible function.Such a method improves the design of a 3D modeled object.

Abstract translation: 提供了一种用于设计3D建模对象的计算机实现的方法，包括向计算机系统提供表示3D建模对象并由控制点网格定义的NURBS表面; 通过计算机系统确定（S20）根据预定的可逆函数的属于NURBS表面的表面点的网格，对应于控制点网格的表面点的网格; 通过计算机系统显示NURBS曲面，并在NURBS表面上显示表面点的格子; 通过图形用户交互来选择表面点的子集; 通过图形用户交互来修改所选择的表面点子集的位置，并且因此，由计算机系统实时更新表面，根据预定的可逆函数执行更新。 这种方法改进了3D建模对象的设计。