Reconstructing A 3D Modeled Object

Patent metadata

Field	Value
Publication number	US-2017193699-A1
Application number	US-201615391950-A
Country	US
Kind code	A1
Filing date	Dec 28, 2016
Priority date	Dec 31, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

The invention notably relates to a computer-implemented method for reconstructing a 3D modeled object that represents a real object, from a 3D mesh and measured data representative of the real object, the method comprising providing a set of deformation modes; determining a composition of the deformation modes which optimizes a program that rewards fit between the 3D mesh as deformed by the composition and the measured data, and that further rewards sparsity of the deformation modes involved in the determined composition; and applying the composition to the 3D mesh. The method improves reconstructing a 3D modeled object that represents a real object.

First claim

What is claimed is:

1 . A computer-implemented method for reconstructing a 3D modeled object that represents a real object, from a 3D mesh and measured data representative of the real object, the method comprising:
providing a set of deformation modes; determining a composition of the deformation modes which optimizes a program that rewards fit between the 3D mesh as deformed by the composition and the measured data, and that further rewards sparsity of the deformation modes involved in the determined composition; and applying the composition to the 3D mesh.

2 . The method of claim 1 , wherein the set of deformation modes comprises a subset representative of geometrical modes that includes the rigid mode and the 3D scaling mode.

3 . The method of claim 2 , wherein the set of deformation modes further comprises a subset representative of at least one physics mode.

4 . The method of claim 3 , wherein the subset of at least one physics mode includes at least one material eigenmode.

5 . The method of claim 4 , wherein the material is a Saint Venant-Kirchhoff material.

6 . The method of claim 4 , wherein the subset representative of at least one physics mode includes a number of the lowest eigenvectors.

7 . The method of claim 5 , wherein the subset representative of at least one physics mode includes a number of the lowest eigenvectors.

8 . The method of claim 3 , wherein the program comprises a term of the type μp ( 0 ) with

ϕ


(
θ
)

=

(

∑

i
=
1

p







α
i

s


(
A
)



)

,

where s(J)=max(|inf J|, |sup J|) and coefficients α i are the coefficients of the at least one physics mode.

9 . A device comprising a non-transitory readable storage medium having recorded thereon a data structure, the data structure including specifications of a 3D modeled object that represents a real object, the 3D modeled object being obtainable by a computer-implemented method for reconstructing a 3D modeled object that represents a real object, from a 3D mesh and measured data representative of the real object, the method comprising:
providing a set of deformation modes; determining a composition of the deformation modes which optimizes a program that rewards fit between the 3D mesh as deformed by the composition and the measured data, and that further rewards sparsity of the deformation modes involved in the determined composition; and applying the composition to the 3D mesh.

10 . The device of claim 9 , the non-transitory readable storage medium forming a transportable data storage medium.

11 . The device of claim 9 , the non-transitory readable storage medium forming accessible memory, the device further comprising a processor coupled to the memory and to a graphical user interface.

12 . The device of claim 11 , wherein the device forms a computer system.

13 . A device comprising a non-transitory computer readable storage medium having recorded thereon a computer program, the computer program including instructions for performing a computer-implemented method for reconstructing a 3D modeled object that represents a real object, from a 3D mesh and measured data representative of the real object, the method comprising:
providing a set of deformation modes; determining a composition of the deformation modes which optimizes a program that rewards fit between the 3D mesh as deformed by the composition and the measured data, and that further rewards sparsity of the deformation modes involved in the determined composition; and applying the composition to the 3D mesh.

14 . The device of claim 13 , the non-transitory readable storage medium forming a transportable data storage medium.

15 . The device of claim 13 , the non-transitory readable storage medium forming accessible memory, the device further comprising a processor coupled to the memory and to a graphical user interface.

16 . The device of claim 15 , wherein the device forms a computer system.

17 . The method of claim 1 , further comprising manufacturing a product represented by the reconstructed a 3D modeled object, the method producing the product based on the 3D modeled object.

Assignees

• Dassault Systemes

Inventors

• Mehr Eloi
• Guitteny Vincent

Classifications

• G06T2200/24

  involving graphical user interfaces [GUIs] · CPC title

• G06T17/205 Primary

  Re-meshing · CPC title

• G06T5/00

  Image enhancement or restoration · CPC title

• G06T7/194

  involving foreground-background segmentation · CPC title

• G06T2207/10028

  Range image; Depth image; 3D point clouds · CPC title