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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?. Looks and feels like a table A Multi-User Interface

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

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  1. 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

  2. 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

  3. 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

  4. 1cm How Does it Work? • Table surface is an array of antennas • Capacitive Circuit: • table  user  receiver pad  table  pc Interact 2003

  5. Questions • What are the quirks / limitations of the DiamondTouch table? • Possible applications? Interact 2003

  6. TetraTetris • Multi-user • Simultaneous input • Hand-gestures • Intuitive • Fun • Design Goals: Interact 2003

  7. TetraTetris: Rules • Based off Tetris • Orig. Designed for 4 • Touch-take • Objective: Symmetrical compounds Interact 2003

  8. 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

  9. 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

  10. Observations • No physical separation of input from output • Fast manipulation of large regions • Support for multiple, simultaneous users Interact 2003

  11. 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

  12. Usefulness • Direct touch and drag • Collaborative use of the same application • Manipulating several objects using the ‘bounding-box’ Interact 2003

  13. Areas for Improvement • Precision control / Rotational ambiguity • Cost of setup • Electrical interference Interact 2003

  14. 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

  15. Links • TetraTetris Homepage • http://tetratetris.cs.arizona.edu • MERL DiamondTouch Page • http://www.merl.com/projects/DiamondTouch Interact 2003

  16. 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

  17. Interact 2003

  18. Interact 2003

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  20. Goals of DiamondTouch: • Multipoint • Identifying • Debris Tolerant • Durable • Unencumbering • Inexpensive Interact 2003

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