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Poster: HiLight: hiding bits in pixel translucency changes

Published: 07 September 2014 Publication History

Abstract

We present HiLight, a new form of screen-camera communication without the need of any coded images (e.g. barcodes) for off-the-shelf smart devices. HiLight hides information underlying any images shown on a LED or an OLED screen, so that camera-equipped smart devices can fetch the information by turning their cameras to the screen. HiLight achieves this by leveraging the orthogonal transparency (alpha) channel, a well-known concept in computer graphics, to embed bits into pixel translucency changes without the need of modifying pixel color values. We demonstrated HiLight's feasibility using smartphones. By offering an unobtrusive, flexible, and lightweight communication channel between screens and cameras, HiLight opens up opportunities for new HCI and context-aware applications to emerge, e.g. smart glass communicates with screens for additional personalized information to realize augmented reality.

References

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http://en.wikipedia.org/wiki/OLED.
[2]
ASHOK, A., ET AL. Challenge: Mobile optical networks through visual MIMO. In Proc. of MobiCom (2010).
[3]
BULLOUGH, J., ET AL. Effects of flicker characteristics from solid-state lighting on detection, acceptability and comfort. Lighting Research and Technology 43, 3 (2011), 337--348.
[4]
PORTER, T., AND DUFF, T. Compositing digital images. In ACM Siggraph Computer Graphics (1984).
[5]
TAN, K.W., ET AL. FOCUS: a usable & effective approach to OLED display power management. In UbiComp (2013).

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  1. Poster: HiLight: hiding bits in pixel translucency changes

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      cover image ACM Conferences
      MobiCom '14: Proceedings of the 20th annual international conference on Mobile computing and networking
      September 2014
      650 pages
      ISBN:9781450327831
      DOI:10.1145/2639108
      Permission to make digital or hard copies of part or all 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 third-party components of this work must be honored. For all other uses, contact the Owner/Author.

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      New York, NY, United States

      Publication History

      Published: 07 September 2014

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      Author Tags

      1. screen-camera link
      2. visible light communication

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      MobiCom '14 Paper Acceptance Rate 36 of 220 submissions, 16%;
      Overall Acceptance Rate 440 of 2,972 submissions, 15%

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