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A Multi-touch Surface Using Multiple Cameras

  • Itai Katz
  • Kevin Gabayan
  • Hamid Aghajan
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4678)

Abstract

In this paper we present a framework for a multi-touch surface using multiple cameras. With an overhead camera and a side-mounted camera we determine the fingertip positions. After determining the fundamental matrix that relates the two cameras, we calculate the three dimensional coordinates of the fingertips. The intersection of the epipolar lines from the overhead camera with the fingertips detected in the side camera image provides the fingertip height. Touches are detected when the measured fingertip height from the touch surface is zero. We interpret touch events as hand gestures which can be generalized into commands for manipulating applications. We offer an example application of a multi-touch finger painting program.

Keywords

Gesture Recognition Fundamental Matrix Multiple Camera Epipolar Line Contact Detection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Itai Katz
    • 1
  • Kevin Gabayan
    • 1
  • Hamid Aghajan
    • 1
  1. 1.Dept. of Electrical Engineering, Stanford University, Stanford, CA 94305 

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