Virtual Reality
BCI (Brain Computer Interaction)
Being able to control a device or software with your brain
action perception
Psychological theory that states that people perceive their environment and events within it
in terms of their ability to act
VR (Virtual Reality)
Fully artificial environment, full immersion in a virtual environment
AR (augmented reality)
Virtual objects overlaid on real- world environment. Real world enhanced with digital objects
MR (Mixed Reality)
Virtual environment, combined with real-world, interact with both the real world and the
virtual environment.
Telepresence
The environment is real. Sense of being physically present with virtual object(s) at the
remote teleoperator site. You are here but you have an experience of being somewhere else
(operating a robot on mars and feel like you are there)
CGI
Computer Generated Imagery
Offline Rendering
Content is not interactive, it can take hours for computers to generate just a few minutes of
pre-rendered footage, but the visual quality is outstanding (example: movies, tv shows,
animations, CGI effects, etc.)
Online (real-time) rendering
Displaying an image on screen fast enough to render it realistically (example: 3D game
requires graphics system can process each frame fast enough to show realistic motion)
Offline Rendering
, Content is not interactive, can take hours for a computer to generate just a few minutes of
pre-rendered footage, but the visual quality is outstanding (movies, tv shows, animations, cgi
effects, etc)
Resolution Problem in VR
VR is displayed on a screen very close to your eyes, so you need very high resolution to not
see the pixels
Fovea
Fovea covers 5% of the eye but takes in 50% of the information responsible for sharp central
vision
Foveated Rendering
Eye movement tracking and rendering information in real-time to create perfect displays and
illusions for every single part, depending on where the Fovea is focused
Video 360
Photorealistic, easy to capture, 3 degrees of freedom (only head rotation) no interaction,
possition locked where camera is
Volumetric Video
6 degrees of freedom (rotation and position possible), video but then the computer renders it
so its very realistic 3D modeling
Presence + Place Illusion (PI)
Subjective experience of being in one place or environment, even when one is physically
situated in another. A mental state in which a user feels physically present within the
computer-mediated environment. The more sensorimotor contingencies, the more realistic.
PI is subjective and can't be measured but can be compared to reality (questionaires)
Immersion
The technology used, objective things used
Plausibility Illusion (Psi)
Illusion that what is happening, is really happening, even though you know it's not. For VR to
prive correlations between external events not directly caused by the participant. Psi does
not require physical realism.
Sensorimotor Contingencies
BCI (Brain Computer Interaction)
Being able to control a device or software with your brain
action perception
Psychological theory that states that people perceive their environment and events within it
in terms of their ability to act
VR (Virtual Reality)
Fully artificial environment, full immersion in a virtual environment
AR (augmented reality)
Virtual objects overlaid on real- world environment. Real world enhanced with digital objects
MR (Mixed Reality)
Virtual environment, combined with real-world, interact with both the real world and the
virtual environment.
Telepresence
The environment is real. Sense of being physically present with virtual object(s) at the
remote teleoperator site. You are here but you have an experience of being somewhere else
(operating a robot on mars and feel like you are there)
CGI
Computer Generated Imagery
Offline Rendering
Content is not interactive, it can take hours for computers to generate just a few minutes of
pre-rendered footage, but the visual quality is outstanding (example: movies, tv shows,
animations, CGI effects, etc.)
Online (real-time) rendering
Displaying an image on screen fast enough to render it realistically (example: 3D game
requires graphics system can process each frame fast enough to show realistic motion)
Offline Rendering
, Content is not interactive, can take hours for a computer to generate just a few minutes of
pre-rendered footage, but the visual quality is outstanding (movies, tv shows, animations, cgi
effects, etc)
Resolution Problem in VR
VR is displayed on a screen very close to your eyes, so you need very high resolution to not
see the pixels
Fovea
Fovea covers 5% of the eye but takes in 50% of the information responsible for sharp central
vision
Foveated Rendering
Eye movement tracking and rendering information in real-time to create perfect displays and
illusions for every single part, depending on where the Fovea is focused
Video 360
Photorealistic, easy to capture, 3 degrees of freedom (only head rotation) no interaction,
possition locked where camera is
Volumetric Video
6 degrees of freedom (rotation and position possible), video but then the computer renders it
so its very realistic 3D modeling
Presence + Place Illusion (PI)
Subjective experience of being in one place or environment, even when one is physically
situated in another. A mental state in which a user feels physically present within the
computer-mediated environment. The more sensorimotor contingencies, the more realistic.
PI is subjective and can't be measured but can be compared to reality (questionaires)
Immersion
The technology used, objective things used
Plausibility Illusion (Psi)
Illusion that what is happening, is really happening, even though you know it's not. For VR to
prive correlations between external events not directly caused by the participant. Psi does
not require physical realism.
Sensorimotor Contingencies
