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We will describe two shooting layout design schemes complying to this use of
the distortion model:
a generic scheme allowing for a precise control of each distortion parameter and
a more dedicated one of huge interest as it is focused on “non distortion” or
“perfect depth”, allowing the user to control of global enlarging factor(s) k i 2
as
any other distortion parameter is set to its “non distortion value”.
4.1
Controlled Depth Distortion
To define the shooting layout using this scheme, we control global enlargement (by
k i 2 ) and 4 potential depth distortions:
1. when
= 1, a global nonlinearity which results in a deformation of the returned
volume onto a “pyramid trunk” (as a i varies along Z axis) (cf. Fig. 4(b)),
ε i
(a) Perfect depth effect
(b) ε i
= 1
(c) γ i
= 0
(d) μ i
= 0etρ = 0
in-screen effect
out-screen effect
Fig. 4 Illustration of the different distortions according to each parameter. For each couple,
the image on the left corresponds to the top view of the real scene whereas the right one
corresponds to the top view of the viewed scene.
 
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