30. Environment
analysis
Real-‐time
3D
tracking
of
user
viewpoint
w.r.t.
World
•
•
•
•
•
Geolocalization
Electro-‐magnetic
Acoustic
Inertial
Vision-‐based
(active
or
passive)
50. 3D
reconstruction
of
regions
Based
on
planar
equations.
– Hypothesis:
world
is
piece-‐wise
planar
3D
registration
by
Iterative
Closest
Point
(ICP)
54. ARToolkit
Fast
and
cheap
6D
marker
tracking
Easy
calibration
routine:
– Measure
camera
properties:
• Center
point
of
the
camera
image.
• The
lens
distortion.
• Camera
focal
length.
!
!
!
Virtual
objects
appear
only
when
complete
markers
are
visible.