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Smartphone Input Using Its Integrated Projector and Built-In Camera

  • Sergiu Dotenco
  • Timo Götzelmann
  • Florian Gallwitz
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8512)

Abstract

Touch input on modern smartphones can be tedious, especially if the touchscreen is small. Smartphones with integrated projectors can be used to overcome this limitation by projecting the screen contents onto a surface, allowing the user to interact with the projection by means of simple hand gestures. In this work, we propose a novel approach for projector smartphones that allows the user to remotely interact with the smartphone screen via its projection. We detect user’s interaction using the built-in camera, and forward detected hand gestures as touch input events to the operating system. In order to avoid costly computations, we additionally use built-in motion sensors. We verify the proposed method using an implementation for the consumer smartphone Samsung Galaxy Beam equipped with a deflection mirror.

Keywords

Mobile computing user interfaces small screen fat finger problem touch input fingertip detection projector smartphone DLP projector 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Sergiu Dotenco
    • 1
  • Timo Götzelmann
    • 1
  • Florian Gallwitz
    • 1
  1. 1.Nuremberg Institute of TechnologyGermany

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