ChromaCam: Demodulating Colored Light with a High-End Smartphone

Title

ChromaCam: Demodulating Colored Light with a High-End Smartphone

 Author

Kemmeren, Eric (TU Delft Electrical Engineering, Mathematics and Computer Science)

Contributor

Langendoen, K.G. (mentor) ORCID 0000-0003-4996-3695
Chavez Tapia, M.A. (mentor)
Lukina, A. (graduation committee)

Degree granting institution

Delft University of Technology

 Programme

Computer Science and Engineering

 Project

CSE3000 Research Project

 Date

2022-06-22

 Abstract

Visible Light Communication (VLC) has seen drastic improvements in recent years, one approach uses active light sources like LEDs, switching them at hight speeds to send data. Another approach uses the fundamental characteristics of liquid crystals (birefringence and thickness) to transmit data to a single pixel receiver. These characteristics allow for alterations in the color of the light. Little power is being used to transmit this data in comparison with using LEDs, and is significant faster than switching the LCs fully on or off like other research has done. This paper proposes an algorithm to decode the data transmitted by LCs with a high-end smartphone instead of the single pixel receiver. This algorithm called ChromaCam has real time transmitter detection and decoding of data. A demonstration is shown using a prototype, achieving data rates of 31 bits per second.

 Subject

Visible Light Communication
Liquid Crystal Displays
CMOS Camera

 To reference this document use:

http://resolver.tudelft.nl/uuid:9a25ca94-7cd3-420c-a829-ecb321725b12

 Part of collection

Student theses

 Document type

bachelor thesis

 Rights

© 2022 Eric Kemmeren
Files
PDF Research_Paper_1.pdf 11.29 MB
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