Spatial frequency modulation for display-camera communication

Seung Su Ryu, Kyu Ho Lee, Ji Sang Bae, Jong Ok Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Display-camera communication (DCC) is one of visible light communication (VLC) techniques using an LED display and a camera. Conventional methods hide data bits by dynamically changing luminance intensity of image blocks. However, this approach still suffers from noticeable flickering artifacts. In this paper, we proposed a novel spatial frequency modulation method for display-camera communication. The proposed method hides a bit by modulating spatial frequency of an image block, which is actually implemented by blurring and sharpening. Discrete Cosine Transform (DCT) is applied to an image block, and its high frequency coefficients are either boosted (sharpened) or zero-padded (blurred). Experimental results demonstrate that the proposed method can achieve larger throughput and higher transmission accuracy, compared to the existing luminance methods.

Original languageEnglish
Title of host publication2021 International Conference on Electronics, Information, and Communication, ICEIC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728191614
DOIs
Publication statusPublished - 2021 Jan 31
Event2021 International Conference on Electronics, Information, and Communication, ICEIC 2021 - Jeju, Korea, Republic of
Duration: 2021 Jan 312021 Feb 3

Publication series

Name2021 International Conference on Electronics, Information, and Communication, ICEIC 2021

Conference

Conference2021 International Conference on Electronics, Information, and Communication, ICEIC 2021
Country/TerritoryKorea, Republic of
CityJeju
Period21/1/3121/2/3

Keywords

  • DCT coefficient
  • Display-Camera Communication (DCC)
  • Spatial Frequency Modulation
  • Visible Light Communication (VLC)

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Networks and Communications
  • Information Systems
  • Information Systems and Management
  • Electrical and Electronic Engineering
  • Instrumentation

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