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Single user multitouch on the DiamondTouch: from 2 x 1D to 2D

Published: 23 November 2009 Publication History

Abstract

The DiamondTouch is a widely used multi-touch surface that offers high quality touch detection and user identification. But its underlying detection mechanism relies on two 1D projections (x and y) of the 2D surface. This creates ambiguous responses when a single user exercises multiple contacts on the surface and limits the ability of the DiamondTouch to provide full support of common multi-touch interactions such as the unconstrained translation, rotation and scaling of objects with two fingers. This paper presents our solution to reduce this limitation. Our approach is based on a precise modeling, using mixtures of Gaussians, of the touch responses on each array of antennas. This greatly reduces the shadowing of the touch locations when two or more fingers align with each other. We use these accurate touch detections to implement two 1D touch trackers and a global 2D tracker. The evaluation of our system shows that, in many situations, it can provide the complete 2D locations of at least two contacts points from the same user.

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Cited By

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  • (2013)An approach for designing and evaluating a plug-in vision-based tabletop touch identification systemProceedings of the 25th Australian Computer-Human Interaction Conference: Augmentation, Application, Innovation, Collaboration10.1145/2541016.2541019(373-382)Online publication date: 25-Nov-2013
  • (2013)IOWAStateProceedings of the 5th ACM SIGCHI symposium on Engineering interactive computing systems10.1145/2494603.2480299(59-68)Online publication date: 24-Jun-2013
  • (2011)A Design of Low Cost Infrared Multi-touch SystemCommunication Systems and Information Technology10.1007/978-3-642-21762-3_12(95-101)Online publication date: 2011
  • Show More Cited By

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cover image ACM Conferences
ITS '09: Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
November 2009
240 pages
ISBN:9781605587332
DOI:10.1145/1731903
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 23 November 2009

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Author Tags

  1. DiamondTouch
  2. expectation maximization
  3. input device
  4. multitouch
  5. tracking

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Overall Acceptance Rate 119 of 418 submissions, 28%

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Cited By

View all
  • (2013)An approach for designing and evaluating a plug-in vision-based tabletop touch identification systemProceedings of the 25th Australian Computer-Human Interaction Conference: Augmentation, Application, Innovation, Collaboration10.1145/2541016.2541019(373-382)Online publication date: 25-Nov-2013
  • (2013)IOWAStateProceedings of the 5th ACM SIGCHI symposium on Engineering interactive computing systems10.1145/2494603.2480299(59-68)Online publication date: 24-Jun-2013
  • (2011)A Design of Low Cost Infrared Multi-touch SystemCommunication Systems and Information Technology10.1007/978-3-642-21762-3_12(95-101)Online publication date: 2011
  • (2010)Construction and evaluation of multi-touch screens using multiple cameras located on the side of the displayACM International Conference on Interactive Tabletops and Surfaces10.1145/1936652.1936667(83-90)Online publication date: 7-Nov-2010

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