Transcript 3D Volumetric Display Using Passive Optical Scatterers Shree K. Nayar and Vijay Anand Computer Science Columbia University SIGGRAPH Conference July 2006, Boston.

3D Volumetric Display Using
Passive Optical Scatterers
Shree K. Nayar and Vijay Anand
Computer Science
Columbia University
SIGGRAPH Conference
July 2006, Boston
Volumetric Displays
Varifocal Mirrors
Spinning Screens
Flourescent Gases
Active Scatterers
Passive Scatterers…
Related Work: Static Volumetric Displays
Voxels with Invisible Waveguides
Detection/Illumination of Dust
MacFarlane 1998
Multi-Plane Projection: DepthCube
Perlin 2004
Sullivan 2003
Two Dimensional Display
Orthographic Projector
Three Dimensional Display: Semi-Regular Cloud
Semi-Regular Indexable Cloud
(9 x 9 x 9)
Orthographic Projector
Number of Visible Points
Visibility Function
Viewing Angle (Degrees)
Three Dimensional Display: Z-Dithered Cloud
Z-Dithered Indexable Cloud
(9 x 9 x 9)
Orthographic Projector
Number of Visible Points
Visibility Function
Viewing Angle (Degrees)
Three Dimensional Display: XY-Dithered Cloud
XY-Dithered Indexable Cloud
(9 x 9 x 9)
Orthographic Projector
Number of Visible Points
Visibility Function
Viewing Angle (Degrees)
Three Dimensional Display: XYZ-Dithered Cloud
XYZ-Dithered Indexable Cloud
(9 x 9 x 9)
Orthographic Projector
Number of Visible Points
Visibility Function
Viewing Angle (Degrees)
Visibility as a Function of Depth
Different Points Within Same XY Grid
Viewing Angle (degrees)
175
5
1 2
3 4 5
6 7
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Depth (Z – Color Coded) of XY Grid
Points Clouds using Laser Induced Damage (LID)
70 mm
200 mm
200 mm
Points: 48 x 48 x 25
Point Brightness
1600
1400
Point with 1 Crack
Point with 4 Cracks
Point with 6 Cracks
Point with 10 Cracks
Point Brightness
1200
1000
800
600
400
200
0
0
10
20
30
40
50
Viewing Angle (degrees)
60
70
80
Point Color
Color Response of LID Layer
Color Response of Optical Diffuser
Display Implementation
Glass Cube
Fresnel Lens
Planar Mirror
Projector
Display of True 3D Objects
Point Cloud: 25x25x16 = 10,000 XYZ-Dithered Points
3D Animation: Rolling Ball
3D Animation: Rolling Ball
Display of Extruded Objects with Top Planes
Cloud: 190,500 Points
Extruded Objects With Lids
Extruded Objects With Lids
Display of Purely Extruded Objects
Cloud: 180,500 Points
Purely Extruded Objects
“Pacman” in 3D
Cloud: 83,866 Points
“Pacman” in 3D
3D Avatar
Cloud: 127,223 Points
Relief Projection: Walt Disney Co. 1980, Negroponte 1981
3D Avatar
3D Avatar
Summary
• Volumetric Displays using Passive Light Scatterers
• Enhanced Point Visibility by Randomization
• Low Cost Implementation using Laser Induced Damage
• Applications:
3D and Extruded Objects
Games
Avatars