公开(公告)号：US20230351650A1

公开(公告)日：2023-11-02

申请号：US17731284

申请日：2022-04-28

Applicant: Dassault Systemes SolidWorks Corporation

Inventor： Shrikant Savant ,  Harsh Sureshbhai Khoont ,  Zahra Karimi ,  Jody Stiles ,  Chin-Loo Lama ,  Makarand Apte

IPC: G06T11/20 ,  G06T7/12 ,  G06F30/12

CPC classification number: G06T11/203 ,  G06T7/12 ,  G06F30/12 ,  G06T2207/20084

Abstract: A computer-implemented method includes receiving a digital representation of an image and generating CAD sketches from it. The number of surfaces in a CAD model depends upon the number entities at the sketch level. The method keeps the number of created sketch entities and constraints to a minimum. The method includes a scalable approach for a range of images. Each contour is represented by a sequence of points following a path corresponding to a boundary in the image. The method includes classifying each point in a particular one of the contours as a curve region or a corner region contour point, thereby segmenting the contour into plurality of curve regions separated by corner regions. The method includes optimally fitting a curve to each one of the curve regions to create the best possible representation of the curve region. Additionally, the refine algorithm automatically improves the fit wherever needed.

公开(公告)号：US11315319B2

公开(公告)日：2022-04-26

申请号：US15931806

申请日：2020-05-14

Applicant: Dassault Systemes SolidWorks Corporation

Inventor： Bowen Yu ,  Kyeong Hwi Lee ,  Shrikant Savant ,  Girish Mule

IPC: G06T17/10 ,  G06T15/08 ,  G06T17/20 ,  G06T19/20 ,  G06F30/23 ,  G06F30/10 ,  G06F30/20

Abstract: A method preserves shapes in a solid model when distributing material during topological optimization. A 3D geometric model of a part having a boundary shape is received. The geometric model is pre-processed to produce a variable-void distance field and to produce a frozen distance field representing the boundary shape. The geometric model is apportioned into a plurality of voxels, and a density value is adjusted for each voxel according to an optimization process. An iso-surface mesh is extracted from the voxel data, and an iso-surface distance field is generated from the extracted iso-surface mesh. A distance field intersection is derived between the iso-surface distance field and the variable-void distance field. A distance field union is performed between the distance field intersection and the frozen distance field, and a result iso-surface mesh is produced from the distance field union.

公开(公告)号：US11217013B2

公开(公告)日：2022-01-04

申请号：US15931779

申请日：2020-05-14

Applicant: Dassault Systemes SolidWorks Corporation

Inventor： Bowen Yu ,  Kyeong Hwi Lee ,  Shrikant Savant ,  Girish Mule

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

Abstract: A method preserves shapes in a solid model when distributing material during topological optimization. A 3D geometric model of a part having a boundary shape is received. The geometric model is pre-processed to produce a variable-void mesh and to produce a frozen mesh representing the boundary shape. The geometric model is apportioned into a plurality of voxels, and a density value is adjusted for each voxel according to an optimization process. An iso-surface mesh is extracted from the voxel data, and a mesh Boolean intersection is derived between the extracted iso-surface mesh and the variable-void mesh. A mesh Boolean union between the mesh Boolean intersection and the frozen mesh.

公开(公告)号：US11189091B1

公开(公告)日：2021-11-30

申请号：US15931779

申请日：2020-05-14

Applicant: Dassault Systemes SolidWorks Corporation

Inventor： Bowen Yu ,  Kyeong Hwi Lee ,  Shrikant Savant ,  Girish Mule

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

Abstract: A method preserves shapes in a solid model when distributing material during topological optimization. A 3D geometric model of a part having a boundary shape is received. The geometric model is pre-processed to produce a variable-void mesh and to produce a frozen mesh representing the boundary shape. The geometric model is apportioned into a plurality of voxels, and a density value is adjusted for each voxel according to an optimization process. An iso-surface mesh is extracted from the voxel data, and a mesh Boolean intersection is derived between the extracted iso-surface mesh and the variable-void mesh. A mesh Boolean union between the mesh Boolean intersection and the frozen mesh.

公开(公告)号：US20190147317A1

公开(公告)日：2019-05-16

申请号：US15810840

申请日：2017-11-13

Applicant: Dassault Systemes SolidWorks Corporation

Inventor： Ameya Divekar ,  Makarand Apte ,  Shrikant Savant

IPC: G06N3/04 ,  G06N3/08 ,  G06F17/50

Abstract: Methods and systems identify frequently-used CAD components and apply machine learning techniques to predict mateable entities and corresponding mate types for those components to automatically add components to a CAD model. An example method includes accessing information regarding CAD model parts and related mate information stored in a computer database, and dividing parts into a plurality of clusters having parts with similar global shape signatures. In response to a new part being added, contextual signatures of entities of the new part are input into a mateability predictor neural network to determine a mateable entity of the new part. Input into a mate-type predictor neural network is (i) a contextual signature of the mateable entity and (ii) a contextual signature of an entity of another part of the CAD model to determine a mate type between the entities. A mate between the new part and the other part is automatically added based on the determined mate type.