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Ippei Suzuki Undergraduate Student, University of Tsukuba
Shuntarou Yoshimitsu, Keisuke Kawahara, Nobutaka Ito,
Atsushi Shinoda, Akira Ishii, Takatoshi Yoshida, Yoichi Ochiai
Gushed Light Field
Aerosol-Based Aerial and Instant Display
Design Method for
U n i v e r s i t y o f Ts u k u b a , Yo i c h i O c h i a i L a b o r a t o r y
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How can we build lightweight midair display?
Introduction
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Ismo Rakkolainen et al. “The interactive fogscreen” 2005
Introduction
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Siggraph 2005 - The Interactive Fogscreen
https://youtu.be/RfmSJQuhlk4
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Introduction
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Fog screen is for…
Fixed
Large
Long time
"Fogscreen at N-Gage booth" by Ville Miettinen (CC BY-NC 2.0)
https://flic.kr/p/dNkBS
Display
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Large
Heavy
Movable
Introduction
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Fog generator is …
“FogScreen downloads”
http://www.3dtv-research.org/publicDocs/showCase/rakkolainen/fogscreen.html
110kg (245lbs)
110cm (3.6 ft)
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Introduction
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“FogScreen Projection screen for Hire” (CC BY 2.0)
https://flic.kr/p/9uejWK
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Large
Heavy
Movable
How can we build lightweight midair fog display?
Small
Light
Movable
We need generator such as…
Introduction
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Introduction
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Aerosol Spray
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Introduction
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vs.
Display time Weight
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Introduction
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Display time Weight
<
In this study…
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Introduction — Summary of Contribution
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1. Evaluate an aerosol spray as a screen
2. Provide a design and fabrication method
for the aerosol-based display
3. Enables the exploration of
new application areas &
expands the expression of fog display
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Related Work
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Passive Midair Display Free-Floating Display
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Racing car is track. Dust. (Free photobank torange.biz) / ©torange.biz (CC BY 4.0)
Fog
Water drops
Display Composed of Water Drops; Eitoku et al. 2006
Bubbles
Dust
Foam beads
Related Work — Passive Midair Display
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Related Work — Passive Midair Display
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“FogScreen downloads”
http://www.3dtv-research.org/publicDocs/showCase/rakkolainen/fogscreen.html
Display Composed of Water Drops
Eitoku et al. 2006
Fog screen
Rakkolainen et al. 2002
The Information Percolator
Heiner et al. 1999
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Related Work — Passive Midair Display
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“FogScreen downloads”
http://www.3dtv-research.org/publicDocs/showCase/rakkolainen/fogscreen.html
Display Composed of Water Drops
Eitoku et al. 2006
Fog screen
Rakkolainen et al. 2002
The Information Percolator
Heiner et al. 1999
Suited for
Static & long-tern display
But NOT suited for moving applications…
Not enough small, heavy
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“Flying Display” Nozaki 2014
“BitDrones” Gomes et al. 2016 “Midair Displays” Schneegass et al. 2014
Related Work — Free-Floating Display
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Implementation — Overview
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Implementation — Overview
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Spray
Spray
Spray
Servo
Servo
Servo
Arduino
Arduino
Arduino
Mirror
Mirror
Mirror
Projector
Projector
Projector
Raspberry Pi
Raspberry Pi
Raspberry Pi
Nozzle Actuator
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Implementation — Aerosol Sprays
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111 mm 175 mm
Cooling spray
70 ml
Isopentane, LPG
Deodorant spray
280 ml
Fatty acid salt-based deodorant,
Quaternaty ammonium compounds,
Ethanol , LPG
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Implementation — Spray Nozzles
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Nozzles for cooling spray Nozzles for deodorant spray
Nozzles for graffiti Nozzles for graffiti
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Implementation — Spray Nozzles
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Graffiti (spray painting)
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Implementation — Spray Actuator
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Implementation — Computer
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Spray
Laser projector
Servo
Video signal
USB serial
Pin conector
Pin conector
Mirror
Servo
Raspberry Pi
Arduino
http://www.raspberrypi.org
https://www.arduino.cc
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Implementation — Projector
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Portable Laser Projector
seeser m1
WXGA (800 × 480)
Up to 25 ANSI lumens
60 × 118 × 20 mm
148.5 g
2 hours battery life
http://amzn.asia/4oy1hX4
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Implementation — Projector
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Servo-Controlled Mirror
Earn projection distance
ON/OFF Lights
Make height shorter
Mirror
Projector
Projector Projector
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Implementation — Overview
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Spray
Spray
Spray
Servo
Servo
Servo
Arduino
Arduino
Arduino
Mirror
Mirror
Mirror
Projector
Projector
Projector
Raspberry Pi
Raspberry Pi
Raspberry Pi
Nozzle Actuator
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Evaluation — Viewing Angle
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0°
90°
0°
(a) (b) (c)
10° 20° 30° 40°
Cam
Source
Projector Distribution
±10°
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Evaluation — Spray Patterns
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Evaluation — Spray Patterns
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(a)
10cm
5cm 10cm 15cm 20cm 25cm 30cm
(b)
(c)
(d)
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Evaluation — Spray Patterns
(a)
10cm
5cm 10cm 15cm 20cm 25cm 30cm
(b)
(c)
(d)
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Evaluation — Spray Patterns
(a)
10cm
5cm 10cm 15cm 20cm 25cm 30cm
(b)
(c)
(d)
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High density near nozzles but short
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Evaluation — Spray Patterns
(a)
10cm
5cm 10cm 15cm 20cm 25cm 30cm
(b)
(c)
(d)
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When it is attached to
a small & low-pressure spray,
the width becomes narrow
Optimal
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Evaluation — Length of distribution
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(a) (b) (c)
Laser source
50cm 50cm
(c) (d)
50cm 50cm
*Photos are lighten composed 15 frames.
Evaluation — Length of distribution
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(a) (b) (c)
Laser source
50cm 50cm
(c) (d)
50cm 50cm
*Photos are lighten composed 15 frames.
Longest, moderately wide
Not steady with small spray
Evaluation — Length of distribution
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(a) (b) (c)
Laser source
50cm 50cm
(c) (d)
50cm 50cm
*Photos are lighten composed 15 frames.
Narrow, short
Evaluation — Length of distribution
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(a) (b) (c)
Laser source
50cm 50cm
(c) (d)
50cm 50cm
*Photos are lighten composed 15 frames.
Evaluation — Length of distribution
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Evaluation — Wind Tolerance
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Evaluation — Wind Tolerance
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Gushed from above
Gushed from bottom
6 m/s 10 m/s 11 m/s
Wind
Wind
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Evaluation — Response Speed
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Rise: 0.5s Disappearance: 0.4s
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Evaluation — Display Time
Continuous (non-stop)
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Evaluation — Display Time
Continuous (non-stop)
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Evaluation — Display Time
1 sec Gush & 1 sec Interval
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Evaluation — Display Time
1 sec Gush & 1 sec Interval
Continuous (non-stop)
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Evaluation — Display Time
1 sec Gush & 1 sec Interval
Continuous (non-stop)
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Application — Wearable Display
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Application — w/ Drone
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Application — w/ Drone
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Application — w/ Radio-Controlled Model Car
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Application — Embedded in Environment
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Photo by Keisuke Yasuda
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Application — Embedded in Environment
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Application — Multi-viewpoints
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[Reference] “360degreee fog projection interactive display” Yagi et al. 2011
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Discussion — Safety Issue
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Fire in Axe (Bodyspray)
https://youtu.be/pWXfftugSBQ
Spray contains
Flammable gas (e.g., LPG)
*This video is for illustration purposes.
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Discussion — Safety Issue
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Discussion — Spray Performance
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More tolerance for wind
More large display area
Higher pressure…
Shorter display time, Heavier spray
But…
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Discussion — Spray Performance
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Fabricate nozzles & spray
Use properly according to the application
In future work…
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Discussion — Narrow Viewing Angle
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Control drone/mirrors
based on results of simulation
In future work…
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Conclusion — Summary of Contribution
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1. Evaluate an aerosol spray as a screen
2. Provide a design and fabrication method
for the aerosol-based display
3. Enables the exploration of
new application areas &
expands the expression of fog display
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Research Group
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Ippei Suzuki
University of Tsukuba
Shuntarou Yoshimitsu
Waseda University
Keisuke Kawahara
University of Tsukuba
Nobutaka Ito
The University of Tokyo
Atushi Shinoda
University of Tsukuba
Akira Ishii
University of Tsukuba
Takatoshi Yoshida
The University of Tokyo
Prof. Yoichi Ochiai
University of Tsukuba
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Special Thanks
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Takanari Kawasumi
Technical support for Drone
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Special Thanks
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Contributors
via Crowdfunding project
https://readyfor.jp
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Ippei Suzuki Undergraduate Student, University of Tsukuba
Shuntarou Yoshimitsu, Keisuke Kawahara, Nobutaka Ito,
Atsushi Shinoda, Akira Ishii, Takatoshi Yoshida, Yoichi Ochiai
Gushed Light Field
Aerosol-Based Aerial and Instant Display
Design Method for
U n i v e r s i t y o f Ts u k u b a , Yo i c h i O c h i a i L a b o r a t o r y