Spatial frequency modulation for display-camera communication

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

doi:10.1109/ICEIC51217.2021.9369764

Spatial frequency modulation for display-camera communication

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

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

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 language	English
Title of host publication	2021 International Conference on Electronics, Information, and Communication, ICEIC 2021
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728191614
DOIs	https://doi.org/10.1109/ICEIC51217.2021.9369764
Publication status	Published - 2021 Jan 31
Event	2021 International Conference on Electronics, Information, and Communication, ICEIC 2021 - Jeju, Korea, Republic of Duration: 2021 Jan 31 → 2021 Feb 3

Publication series

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

Conference

Conference	2021 International Conference on Electronics, Information, and Communication, ICEIC 2021
Country/Territory	Korea, Republic of
City	Jeju
Period	21/1/31 → 21/2/3

Bibliographical note

Funding Information:
This work is supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2019R1A2C1005834).

Publisher Copyright:
© 2021 IEEE.

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

Access to Document

10.1109/ICEIC51217.2021.9369764

Cite this

Ryu, S. S., Lee, K. H., Bae, J. S., & Kim, J. O. (2021). Spatial frequency modulation for display-camera communication. In 2021 International Conference on Electronics, Information, and Communication, ICEIC 2021 Article 9369764 (2021 International Conference on Electronics, Information, and Communication, ICEIC 2021). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICEIC51217.2021.9369764

Spatial frequency modulation for display-camera communication. / Ryu, Seung Su; Lee, Kyu Ho; Bae, Ji Sang et al.
2021 International Conference on Electronics, Information, and Communication, ICEIC 2021. Institute of Electrical and Electronics Engineers Inc., 2021. 9369764 (2021 International Conference on Electronics, Information, and Communication, ICEIC 2021).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ryu, SS, Lee, KH, Bae, JS & Kim, JO 2021, Spatial frequency modulation for display-camera communication. in 2021 International Conference on Electronics, Information, and Communication, ICEIC 2021., 9369764, 2021 International Conference on Electronics, Information, and Communication, ICEIC 2021, Institute of Electrical and Electronics Engineers Inc., 2021 International Conference on Electronics, Information, and Communication, ICEIC 2021, Jeju, Korea, Republic of, 21/1/31. https://doi.org/10.1109/ICEIC51217.2021.9369764

Ryu SS, Lee KH, Bae JS, Kim JO. Spatial frequency modulation for display-camera communication. In 2021 International Conference on Electronics, Information, and Communication, ICEIC 2021. Institute of Electrical and Electronics Engineers Inc. 2021. 9369764. (2021 International Conference on Electronics, Information, and Communication, ICEIC 2021). doi: 10.1109/ICEIC51217.2021.9369764

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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.",

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AB - 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.

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Spatial frequency modulation for display-camera communication

Abstract

Publication series

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Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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