tetratetris and diamondtouch a multi user touch interface at play
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TetraTetris and DiamondTouch: A Multi-User Touch Interface at Play. INTERACT 2003 Collberg, Kobourov, Kobes, Trush, Smith, and Yee {collberg,kobourov,kobes,strush,bsmith,gyee}@cs.arizona.edu. What is a DiamondTouch Table?. Looks and feels like a table A Multi-User Interface

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tetratetris and diamondtouch a multi user touch interface at play

TetraTetris and DiamondTouch: A Multi-User Touch Interface at Play

INTERACT 2003

Collberg, Kobourov, Kobes, Trush, Smith, and Yee

{collberg,kobourov,kobes,strush,bsmith,gyee}@cs.arizona.edu

what is a diamondtouch table
What is a DiamondTouch Table?
  • Looks and feels like a table
  • A Multi-User Interface
    • Developed at Mitsubishi Electric Research Laboratories (MERL) in 2001
    • Size of Entire Table (36 x 24in / 91.4 x 60.96cm)

Interact 2003

related work
Related Work
  • Brown et. Al, (1990), Interact.
  • Sears et. Al, (1990), ACM annual conference on Cooperation.
  • LeeTiernan, S., & Grudin, J., (2001), Interact.
  • Dietz, P., & Leigh, D., (2001), 14th Annual ACM Symposium on User Interface Software and Technology.
  • Cheok et. Al, (2002), Personal and Ubiquitous Computing.

Interact 2003

how does it work
1cmHow Does it Work?
  • Table surface is an array of antennas
  • Capacitive Circuit:
    • table  user  receiver pad  table  pc

Interact 2003

questions
Questions
  • What are the quirks / limitations of the DiamondTouch table?
  • Possible applications?

Interact 2003

tetratetris
TetraTetris
  • Multi-user
  • Simultaneous input
  • Hand-gestures
  • Intuitive
  • Fun
  • Design Goals:

Interact 2003

tetratetris rules
TetraTetris: Rules
  • Based off Tetris
  • Orig. Designed for 4
  • Touch-take
  • Objective: Symmetrical compounds

Interact 2003

implementation issues
Implementation Issues
  • Finicky electronics
    • Electrical interference
  • Row / col matching
    • Table does not match rows with columns
    • Does NOT distinguish what pair of corners is touched
    • Our solution: “The bounding box”

Interact 2003

bounding box cont
Box Width Increase Turn Right

Box Height Increase Turn Left

Bounding Box, Cont.
  • Takes outer-most rows and columns
  • Can be used like a ‘lasso’
  • Rotational ambiguity

Interact 2003

observations
Observations
  • No physical separation of input from output
  • Fast manipulation of large regions
  • Support for multiple, simultaneous users

Interact 2003

challenges
Challenges
  • Size of touch surface
    • 33 x 20 inches (84 x 51 cm)
  • Precision control
    • Table resolution (160x96)
    • After weighted interpolation (2560x1536)
    • Finger >> pixel
  • Lack of ability to display output
    • 7 minute solution: lots of duct tape

Interact 2003

usefulness
Usefulness
  • Direct touch and drag
  • Collaborative use of the same application
  • Manipulating several objects using the ‘bounding-box’

Interact 2003

areas for improvement
Areas for Improvement
  • Precision control / Rotational ambiguity
  • Cost of setup
  • Electrical interference

Interact 2003

the future
The Future?
  • Current improvements from MERL
    • Less electrical interference
    • Now fits standard 4:3 aspect ratio (orig. 5:3)
    • Maturing Software Development Kit
  • Possible applications
    • Cooperative architecture design
    • Collaborative musical composition
    • Coordinated disaster relief planning

Interact 2003

links
Links
  • TetraTetris Homepage
    • http://tetratetris.cs.arizona.edu
  • MERL DiamondTouch Page
    • http://www.merl.com/projects/DiamondTouch

Interact 2003

acknowledgements
Acknowledgements
  • Darren Leigh, Paul Dietz, Ubicomp 2002 Workshop on Collaboration and Interactive Walls and Tables,2002.
  • Mitsubishi Electronic Research Laboratories, www.merl.com, ftp.merl.com2002.

Interact 2003

goals of diamondtouch
Goals of DiamondTouch:
  • Multipoint
  • Identifying
  • Debris Tolerant
  • Durable
  • Unencumbering
  • Inexpensive

Interact 2003

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