Information Technology Reference
In-Depth Information
In case of shooting for perfect depth effect, the shooting parameters can be cal-
culated as below:
P
i
2
=
p
i
2
/
k
i
2
D
i
2
=
d
i
2
/
k
i
2
W
b
=
W
/
k
i
2
H
b
=
H
/
k
i
2
c
i
=
e
i
/
k
i
2
f
i
imposed or chosen, individually
∀
∈{
1
...
n
}×{
1
...
m
}
i
,
∀
∈{
1
...
n
}
or on the whole
.
by lot
i
2
(16)
w
i
=
W
b
f
i
/
D
i
2
=
Wf
i
/
d
i
2
h
i
=
H
b
f
i
/
D
i
2
=
Hf
i
/
d
i
2
α
i
=
c
i
f
i
/
D
i
2
=
e
i
f
i
/
d
i
2
β
i
=
P
i
2
f
i
/
D
i
2
=
p
i
2
f
i
/
d
i
2
This particular case is very interesting for its realism
i.e.
in order to convince fi-
nanciers or deciders, it may be important to give the real volumetric perception of a
building, or a mechanical piece, in a computer aided design (CAD) application, or
medical visualization software, in a surgical simulation application.
5
Derived Shooting Technologies
This work is the result of a collaboration between a research laboratory and a
company. In this context and thanks to these design schemes, we have created 3
different technologies to shoot 3D scenes: multi-viewpoint computer graphics soft-
ware, photo rail and camera system. These products have been developed under
the “3DTV Solutions” brand and patents are pending for each of them. We have
developed 3 solutions to obtain qualitative photo or video content for any relevant
kind of scene, still or animated, real or virtual. We use anaglyph to illustrate our
results even if their viewing on paper or 2D screen media is not optimum because
the images have been calculated to be rendered on specific devices.
5.1
3D Computer Graphics Software
Thanks to the previous shooting design scheme, we are able to place the virtual sen-
sors around a standard monocular camera according to the chosen viewing device
in order to obtain the desired depth effect. In this case, virtual cameras are perfect
and there is no issue with distortions due to sensors or lenses.
Thus we have developed plugins and software (3DVizCAD, 3DVizMED and
3DTricks) to visualize and handle in real-time files from CAD software such as
AutoCAD, Archicad, Pro/Engineer, etc. as well as medical data, such as MRI. We
are going to apply this technology to other virtual scenes. In those software pieces,
we choose the rendering device parameters and the desired depth effect, and the soft-
ware computes and uses its virtual shooting layout. It is possible to record different
rendering devices and depth effect distortions so as to switch easily between these
