Virtual Reality Oculus Rift and Valve’s Vive · Virtual Reality •A term used to ... Oculus Rift...
Transcript of Virtual Reality Oculus Rift and Valve’s Vive · Virtual Reality •A term used to ... Oculus Rift...
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Virtual Reality
NBAY 6120
April 4, 2016
Donald P. Greenberg
Lecture 9
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Virtual Reality
• A term used to describe a digitally-generated
environment which can simulate the perception of
PRESENCE.
• Note that within the context of this course, I refer to
VR as containing 3D data as contrasted to just
creating a digital copy of information obtained
from a film or digital camera.
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Virtual Reality
• A person immersed within this virtual world can
manipulate objects, interact with the environment,
and explore the virtual world in the same
perceptual way as one interacts with the physical
world.
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Why is VR different than other modes of
watching images and video?
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Human in the Loop
• Abstract Interpretation
• Viewing a Picture on Television
• Cinema Viewing
• Presence
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Current and Recent Business Investments
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Facebook Buys Oculus Rift
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Why did Facebook invest $2 billion in Oculus Rift?
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Microsoft’s Minecraft
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Microsoft’s Hololens
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Microsoft’s Hololens 3/30/16
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Why did Microsoft buy Minecraft?
Why is Microsoft building its Hololens?
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Magic Leap 2015
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Why is Google (and Andressen / Horwitz) investing $500+
million in Magic Leap?
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Virtual Reality
• What is necessary to make virtual reality a reality?
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Virtual Reality
• Virtual Reality is not new
• The amount of financing which has been made available
• Costs have been sufficiently lowered to bring to the masses
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Ivan Sutherland’s HMD 1968
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Head-mounted Displays 1990s
Henry Fuchs,
University of
North Carolina
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Oculus Rift 2016
Not Yet Available
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HTC and Valve’s SteamVR Vive 2016
Available Tomorrow
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HTC and Valve’s Tower and Hands
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Minecraft and Netflix for VR 9/24/15
John Carmack announces deal for
bringing both Minecraft (MSFT)
and Netflix to both Gear VR and
Oculus VR.
Minecraft was bought by MSFT for
$2.5B, and Netflix is responsible
for 37% of internet traffic.
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Google’s Cardboard
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Samsung’s Cell Phones
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• How Do Virtual Reality Goggles Work Today?
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Distorted Images
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Jean-Francois Niceron. Thaumaturgus opticus…(Rome,
1646), illus. 25.
The projection of a screen or grid in anamorphic
perspective makes the transfer of a representation
possible.
Fred Leeman. “Hidden Images,” 1975, Verlag M. DuMont Schauberg,
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Erhard Schon. Picture puzzle: Out, You Old Fool c. 1535. Fred Leeman.
Hidden Images, 1975, Harry N. Abrams.
Fred Leeman. “Hidden Images,” 1975, Verlag M. DuMont Schauberg,
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Google Art Project: http://www.googleartproject.com/museums/nationalgallery/the-ambassadors
Hans Holbein The Ambassadors
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Opera Lighting Siggraph 1991
Dorsey, Sillion and Greenberg
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Dorsey, Sillion and Greenberg
Opera Lighting Siggraph 1991
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Opera Lighting Siggraph 1991
Dorsey, Sillion and Greenberg
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Opera Lighting Siggraph 1991
Dorsey, Sillion and Greenberg
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http://www.wltc.org/Documents/TruckArt.htm
Truck Art
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Julian Beever - Chalk Drawings
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How the Oculus Rift DK2 Works 2014
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Oculus Rift DK2
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Oculus Rift
Flat 1080P
AMOLED
Display
Accelerometers
and logic boardLenses
Oculus Rift DK2 Components
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Oculus Rift DK2
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Oculus Rift DK2 Angular Rotation
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Oculus Rift DK2 Distortion Strategy
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Oculus Rift DK2 Distorted Image
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Oculus Rift DK2 Distorted Image
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Need to be able to see (understand) correct DEPTH information
Need to have significant RESOLUTION to merge virtual and real imagery
Need to render images that are physically accurate and perceptually
indistinguishable from real world scenes
and
all of this must be done fast enough to imply motion
Requirements for “PRESENCE”
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Depth Perception from 2-D Images
Monoscopic
Stereoscopic
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Paris Street, Rainy Day 1877 Caillebotte
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Human Depth Perception
Depth Perception
Oculomotor
Binocular
Convergence
Monocular
Accommodation
Visual
Binocular
Stereopsis
Monocular
Static Cues
PerspectiveFamiliarity,
Relative Size
Motion, Position
OcclusionTexture Gradient
Shading, Shadows, Highlights
Atmospheric Blur
Motion Parallax
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Monoscopic Depth Cues
Perspective
Depth from Motion, Relative Size,
Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shadows and Specular Highlights
Atmospheric Blur
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Monoscopic Depth Cues
Perspective
Depth from Motion, Relative
Size, Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shadows and Specular Highlights
Atmospheric Blur
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Monoscopic Depth Cues
Perspective
Depth from Motion, Relative
Size, Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shadows and Specular Highlights
Atmospheric Blur
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Monoscopic Depth Cues
Perspective
Depth from Motion, Relative
Size, Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shadows and Specular Highlights
Atmospheric Blur
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Monoscopic Depth CuesPerspective
Depth from Motion, Relative
Size, Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shading, Shadows, and Specular
Highlights
Atmospheric Blur Viewpoint A Viewpoint B Viewpoint C
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Monoscopic Depth Cues
Perspective
Depth from Motion, Relative
Size, Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shading, Shadows, and Specular
Highlights
Atmospheric Blur
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Monoscopic Depth Cues
Perspective
Depth from Motion, Relative
Size, Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shading, Shadows, and Specular
Highlights
Atmospheric Blur
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Monoscopic Depth Cues
Perspective
Depth from Motion, Relative
Size, Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shadows and Specular Highlights
Atmospheric Blur
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Monoscopic Depth Cues
Perspective
Depth from Motion, Relative
Size, Position, Familiarity
Occlusion
Texture Gradient
Parallax from Motion
Shadows and Specular Highlights
Atmospheric Blur
AccommodationNote change in lens shape
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Accommodation
This is the process by which the vertebrate eye changes optical power to
maintain a clear image or focus on an object as its distance varies.
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Accommodation
The reflex can be controlled but cannot be ‘felt’
Accommodation amplitude declines with age
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Stereoscopic Vision: Behind The Screen (Concave)
L RL
R
Screen /
Image Plane
Apparent Image
Depth
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Stereoscopic Vision: In Front Of The Screen (Convex)
L RL
R
Screen /
Image Plane
Apparent Image
Depth
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Stereoscopic Vision: At The Screen
L RL
R
Screen /
Image Plane
Apparent Image
Depth
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Vergence
The simultaneous movement of the pupils of the eyes toward or away from
one another during focusing.
This measure of the convergence or divergence of a pair of light rays is
defined as vergence.
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Diagram of Vergence
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Vergence Accommodation Conflict
Computer and projection displays present images on a single surface but have
a focal distance (blur on the retina) which may be in front of or behind the
screen
The inability to fuse the binocular stimuli causes discomfort and fatigue to
the viewer
Viewers can be trained, and the discomfort can diminish with practice
David M. Hoffman, Ahna R. Girschick, Kurt Akeley, Martin S. Banks. “Vergence-accommodation conflicts hinder visual performance and cause
visual fatigue, Journal of Vision, vol. 8, no. 3, article 33, March 28, 2008.
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End