27-06-2012, 11:45 AM
Personal Varrier: Autostereoscopic virtual reality display for distributed
[attachment=25697]
Introduction
First person perspective, 3d stereoscopic vision, and realtime
interactivity all contribute to produce a sense of immersion
in VR displays. These features can afford greater understanding
of data content when VR is applied to the field of scientific
visualization, particularly when the data sets are large,
complex, and highly dimensional. As scientific data increases
in size, computation and display have been decoupled through
mechanisms such as amplified collaboration environments [13]
which often contain stereo display devices.
Background
Autostereo displays can be produced by a variety of
methods, including optical, volumetric, and lenticular/barrier
strip, but lenticular and barrier strip remain the most popular
methods due to their ease of manufacture. A comprehensive
survey of autostereo methods can be found in [6] and more
recently in [12].
Varrier (variable or virtual barrier) is the name of both
the system and a unique computational method. The Varrier
method utilizes a static parallax barrier, which is fine-pitch
alternating sequence of opaque and transparent regions printed
on photographic film as in Fig. 1. This film is then mounted in
front of the LCD display, offset from it by a small distance.
Results and conclusions
Results
Although the native display resolution is higher, the Personal
Varrier effectively can display 640 × 800 autostereo over a
50 field of view at interactive frame rates. Cross-talk between
the eyes (ghosting) is less than 5%, which is comparable
to high-quality stereoscopic displays, except that Personal
Varrier requires no glasses to be worn. Personal Varrier is
orthographic: all dimensions are displayed in the same scale
and no compression of the depth dimension occurs. Contrast
is approximately 200:1. Personal Varrier is a small-scale VR
display system with viewer-centered perspective, autostereo
display, tether-less tracking, and real-time interactivity. A
variety of distributed scientific visualization applications have
been demonstrated using the CAVEwave network, including
large data sets, viewpoint reconstruction, and real-time 3d
teleconferencing.
[attachment=25697]
Introduction
First person perspective, 3d stereoscopic vision, and realtime
interactivity all contribute to produce a sense of immersion
in VR displays. These features can afford greater understanding
of data content when VR is applied to the field of scientific
visualization, particularly when the data sets are large,
complex, and highly dimensional. As scientific data increases
in size, computation and display have been decoupled through
mechanisms such as amplified collaboration environments [13]
which often contain stereo display devices.
Background
Autostereo displays can be produced by a variety of
methods, including optical, volumetric, and lenticular/barrier
strip, but lenticular and barrier strip remain the most popular
methods due to their ease of manufacture. A comprehensive
survey of autostereo methods can be found in [6] and more
recently in [12].
Varrier (variable or virtual barrier) is the name of both
the system and a unique computational method. The Varrier
method utilizes a static parallax barrier, which is fine-pitch
alternating sequence of opaque and transparent regions printed
on photographic film as in Fig. 1. This film is then mounted in
front of the LCD display, offset from it by a small distance.
Results and conclusions
Results
Although the native display resolution is higher, the Personal
Varrier effectively can display 640 × 800 autostereo over a
50 field of view at interactive frame rates. Cross-talk between
the eyes (ghosting) is less than 5%, which is comparable
to high-quality stereoscopic displays, except that Personal
Varrier requires no glasses to be worn. Personal Varrier is
orthographic: all dimensions are displayed in the same scale
and no compression of the depth dimension occurs. Contrast
is approximately 200:1. Personal Varrier is a small-scale VR
display system with viewer-centered perspective, autostereo
display, tether-less tracking, and real-time interactivity. A
variety of distributed scientific visualization applications have
been demonstrated using the CAVEwave network, including
large data sets, viewpoint reconstruction, and real-time 3d
teleconferencing.