US 11,675,935 B2 · Methods and systems for computer-based prediction of fit and function of garments on soft bodies

Abstract

A method generates a three dimensional representation of a garment and comprises: obtaining a three dimensional human body model comprising an outer surface representative of an outermost surface of a human body; obtaining a three dimensional representation of a garment; and simulating a three dimensional physical interaction of the three dimensional body model with a three dimensional representation of the garment. Simulating the three-dimensional physical interaction comprises: deforming both the three-dimensional body model and the three dimensional representation of the garment; and displaying the deformed three-dimensional human body model and the deformed three-dimensional representation of the garment.

A method for generating a three dimensional representation of a garment, the method comprising:

obtaining a three dimensional human body model comprising an outer surface, the outer surface representative of an outermost surface of a human body;
obtaining a three dimensional representation of a garment;
and
simulating a three dimensional physical interaction of the three dimensional body model with a three dimensional representation of the garment;
wherein simulating the three-dimensional physical interaction comprises:
simulating physical interaction of the three dimensional human body model with the three dimensional representation of the garment to thereby deform the three dimensional human body model;
and
simulating physical interaction of the three dimensional representation of the garment with the three dimensional human body model to thereby deform the three dimensional representation of the garment;
and
displaying the deformed three-dimensional human body model and the deformed three-dimensional representation of the garment;
wherein simulating the three-dimensional physical interaction comprises optimizing an energy function that represents a variational formulation of the physical properties of deformation of the body and the garment, which attributes cost to deformation of the body and garment away from a reference state;
wherein optimizing the energy function is subject to one or more non-penetration constraints that prevent the three dimensional representation of the garment from penetrating the three-dimensional human body model;
wherein the one or more non-penetration constraints that prevent the three dimensional representation of the garment from penetrating the three-dimensional human body model comprise:
an intermediate implicit surface which is constrained by the outer surface of the three-dimensional human body model;
and
one or more intermediate constraints that prevent the three dimensional representation of the garment from penetrating the implicit surface;
and
wherein optimizing the energy function subject to one or more non-penetration constraints comprises solving or approximating a solution of a system having a formulation
arg
min
x
c
,
x
b
W
c
(
x
c
)
+
W
b
(
x
b
)
(
1
)
subject
⁢
to
c
s
k
(
x
b
,
s
k
;
X
s
)
=
0
⁢
∀
k
c
c
(
x
c
j
;
X
s
)
≥
0
⁢
∀
j
where:
xc are vertices of the three dimensional representation of the garment;
xcj is a jth vertex of the three dimensional representation of the garment;
xb are the vertices of the three dimensional human body model;
xb,s are the surface vertices of the three dimensional human body model;
xb,sk is a kth surface vertex of the three dimensional human body model;
Xs is a set of parameters that define the intermediate implicit surface;
xs is a parameter of the intermediate implicit surface defined by Xs, where xs is itself parameterized as a function xs=ƒ(xb,s) of the surface vertices xb,s;
Wc is an objective function of the garment;
Wb is an objective function of the body;
csk(·;xs) is a constraint on the kth surface vertex of the three dimensional human body model that vanishes at xb,sk;
and
cc(·;xs)=cc(·;ƒ(xb,s))=c(·;xb) is a contact constraint that prevents interpenetration of xcj through the body.

87 more elements

Methods and systems for computer-based prediction of fit and function of garments on soft bodies

Life of this patent

Methods and systems for computer-based prediction of fit and function of garments on soft bodies

Life of this patent

Abstract

Claims20