Dynamic PVLC: Pixel-level visible light communication projector with interactive update of images and data

Takefumi Hiraki, Shogo Fukushima, Hiroshi Watase, Takeshi Naemura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We previously studied methods leveraging pixel-level visible light communication (PVLC) that embeds imperceptible information for human eyes in each pixel of an image. The PC computation load and amount of data transferred between the PC and projector in previous PVLC systems were excessive because the PC executed both the video and data encoding processes. As a result, it was impossible to achieve both high-dynamic-range images and dynamic updates of the images and data. In this paper, we propose a dynamic PVLC system that offers high video quality and interactively updates the PVLC information through hardware encoding processing. Our system can project a 24-bit gradation color PVLC video that contains 64-bit data at 120 fps by synchronously controlling the ON/OFF states of the DMD and LED light sources at the given performance limit of the projector.

Original languageEnglish
Pages (from-to)160-168
Number of pages9
JournalITE Transactions on Media Technology and Applications
Volume7
Issue number4
DOIs
Publication statusPublished - 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Media Technology
  • Computer Graphics and Computer-Aided Design

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