1.
Graffiti Fur: Turning Your Carpet into a Computer Display
Keio University / Nagoya Institute of Technology / The University of Tokyo
Yuta Sugiura, Koki Toda, Takayuki Hoshi, Youichi Kamiyama, Takeo Igarashi and Masahiko Inami

2.
Motivation
• Living spaces tend to appear static (boring)
• What if they were dynamic and adaptable?

3.
Projector Technology
• How to keep a sense of clam in a living environment?
Mixed Reality Living Spaces, Schorr 2014

4.
Non-emissive Display and Ink Technology
Pixelroller, rAndom International 2005Dotanco, Kawana 2012
Fur Display, Furukawa 2009KERIDO, Haneda 2009 Wooden Mirror, Rozin 1999
ShaderPrinter, Saakes 2012

5.
Carpet Enchant Your Living Space
• Carpets cover large areas of the environment

6.
Basic Idea
• Shading properties of fur change as fibers are raised or
flattened

7.
Displays Created by Manipulating Existing Objects
Snow Water Padding Art
Sand Rock Water jet

8.
Advantages
• Easily and economic installation and use
– no requiring any non-reversible modifications to the carpet
– No ink required
• Adaptable to human and home environments
– No glare emission
• High durability and Large size

9.
First Prototype
• Attach paper on sticky roller cleaner

10.
Shading Property of Fur
• Difference of appearance based on incident and
reflected angle
Incident light
Incident
Angle
Reflected Light
Reflected
Angle

11.
Experiment
• Study to find condition to get
high contrast patterns
• Incident light 60° (g)
Reflected light -20°
Light Source
Material
Camera Position
_

12.
Three Drawing Methods
1.Roller
2.Pen
3.Pressure Projection

13.
Roller Type Device
• Collaborative device to draw patterns
Rod
Servo
Motor
Drag Direction

14.
1. Draw using finger or pen 2. Capture from real world objects
3. Capture from pictures 4. Type text into the textbox
Four Types of Input Method

15.
Multiple Layer Drawing
• Device creates marks for drawing the next line.
• Large images can be drawn.
Marker

16.
Device Attached to Roomba

17.
Pen Type Device
Finger vs PenRotating wheel is always oriented parallel
to the growth direction of the fur
Wheel
Wheel
Calibration Button
Servo and Gyro (inside)
Stop Button
Start Button
GripBattery
(wrong side)

18.
Pressure Projection Device
• Using airborne ultrasonic focused display (AUFD)
– Can be placed vertically
– Ability to re-write patterns automatically
– Adaptable to long fur

19.
Principle
• Two AUFDs are placed face to face.
• AUFDs are used to raise and flatten fur fibers by projecting
pressure from opposing angles
Drawing Erasing

20.
System Configuration
AUFD
Spot Light
Tablet PC
Horizontal version Vertical version

21.
Findings
• Shining at the projected part
• Fur begins to return to original position after force is
projected because of elastic property

22.
Art enters to our daily life spaces

23.
Calm Message
• Welcome message, Schedule or weather

24.
Fixing the Pattern
• Laundry starch holds the pattern
• Restored to original form by washing

25.
User Observation
• One child created a story integrating a picture with
plush toys
• Edited pattern with his fingers
Airplane with Monster

26.
Limitation
• Slow refresh rate
• Multiple colors are not used
• Low resolution

27.
Future Work
• Explore the reflectance model (BRDF) on fur surfaces
• Drawing patterns in gray scale
• Enabling users’ interaction on surfaces
• Adapting to grass fields

28.
Thank you for listening
• Graffiti Fur: Turn your carpet into a computer display
θ Φ
Light Source
Incident
Angle
Camera
Reflected
Angle
+
Basic Idea
Implementation
Applications
Drawing MethodExperiment
Creative SupportCalm Message Art come to daily lifeCommunication
Shading properties of fur change as fibers are raised or flattened
Roller Pen Non-contact
Keio University / Nagoya Institute of Technology / The University of Tokyo
Yuta Sugiura, Koki Toda, Takayuki Hoshi, Youichi Kamiyama, Takeo Igarashi and Masahiko Inami