High-speed-camera image processing based LED traffic light detection for road-to-vehicle visible light communication

Premachandra, H. Chinthaka N.; Yendo, Tomohiro; Tehrani, Mehrdad Panahpour; Yamazato, Takaya; Okada, Hiraku; Fujii, Toshiaki; Tanimoto, Masayuki

doi:10.1109/ivs.2010.5548097

Cited by 44 publications

(20 citation statements)

References 3 publications

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“…A lot of effort has been made to incorporate image sensors as a part of the communication system in automotive applications. The main concern is how to capture the low SNR transmitter image in order to achieve effective communication with minimum errors .…”

Section: Introductionmentioning

confidence: 99%

Optimised optical wireless car‐to‐traffic‐light communication

Arnon

2014

Trans. Emerging Tel. Tech.

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Intelligent transport systems have become the major technology for increasing road safety and traffic efficiency, as well as for reducing the number of road casualties. Radio frequency and optical wireless communication technologies have been proposed as a means for establishing communication between vehicular and road infrastructure, such as traffic lights, billboards and road infrastructures and for providing inter-vehicular communication. These technologies provide one-way or two-way short-range to medium-range wireless communication links that are specifically designed for the automotive sphere. The technology that is analysed in this paper is optical wireless communication. This technology modulates optical data on top of the illumination in the traffic lights and in the automotive lighting and detects the information using fast imaging sensors. Using knowledge of the amplitudes of the signal and the noise in each pixel, we tune adaptively and separately the gain of each individual pixel in the imaging sensor for communication signals. Tuning the gain is based on the mathematical model derived in this research. Comparison is made between the adaptive model and the standard model. From the mathematical analysis and the results of the comparison, it is clear that this model significantly improves communication system performance. In our numerical calculation for a given set of parameters, the signalto-noise ratio of the standard system and the adaptive system changes from more than 7 10 4 to more than 7 and less than 2 10 3 to more than 30 for a change in transmitter power from 10 to 100 watts respectively.

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Section: Introductionmentioning

confidence: 99%

Optimised optical wireless car‐to‐traffic‐light communication

Arnon

2014

Trans. Emerging Tel. Tech.

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“…Among these applications, the adaptation of VLC for Intelligent Transportation Systems (ITS) is of high interest to various VLC research groups [5][6][7][8][9][10][11][12]. In order to obtain intelligence in transportation, ITSs have utilized the advantages of the Information and Communication Technologies (ICT), providing several different technological systems that help users.…”

Section: Introductionmentioning

confidence: 99%

“…However, it does not discuss any channel parameter details that describe the reference channel model. The related research papers use either a mathematical channel model that utilizes the simplified automotive environments [7][8][9], or use their own developed channel modeling simulators, which still contain many great simplifications and assumptions [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of visible light communication channel delay profiles for automotive applications

Lee

Kwon

Jung

et al. 2012

J Wireless Com Network

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In this article, we present channel delay profiles based on simulated data regarding the practical conditions for the use of visible light communication (VLC) in automotive applications such as Intelligent Transportation Systems (ITS). Practical vehicular LED headlamp and street lamp that consider the lighting regulation for transportation are used to design the ITS scenarios based on VLC. We modeled two usage scenarios, crossroad and metropolitan street, using the CATIA V5 tool. Measurements for the VLC channel delay profile evaluation were then gathered by using a ray-tracing scheme employing commercial LightTools software under the vehicle-to-vehicle and vehicle-to-infrastructure (V2I) communication links. From the obtained channel impulse responses from both scenarios, we derived the VLC channel delay profiles. From them, we found that the common property of the delay profile was composed of dominant multiple line of sight (LOS) links and a less number of non-LOS delay taps. However, the channel delay profile for the V2I link and metropolitan scenario show more dispersive channel characteristics due to the reflection and diffusion of the visible light.

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“…Spectral selection example for codes (110, 010, 000) [9] profit than RF-based ITS solutions. Therefore, many studies of the convergence of VLC technology with ITS systems have been performed [17][18][19][20][21][22][23][24] .This study analyzed the performance of the Color Shift Keying (CSK) scheme under a Vehicle-to-Infrastructure (V2I) downlink scenario.The CSK scheme is a type of VLC scheme proposed by the IEEE 802.15.7 VLC standard, which transmits data using multi-spectral LEDs, such as Red, Green, and Blue LEDs [8][9][10] . Therefore, it transmits data by changing the emitted power of …”

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confidence: 99%

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confidence: 99%

Performance of CSK Scheme for V2I Visible Light Communication

Kim

Jung³

2015

The Journal of Korean Institute of Communications and Informati

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These days, research related to Intelligent Transportation System (ITS) technology is being widely considered.ITS is inevitable for future transportation systems to reduce accidents, congestion, and offer a smooth flow of traffic. The use of Visible Light Communication (VLC) in ITS systems has been considered widely because of its EMC/EMI free and LED infrastructure reusable properties. Among the VLC schemes, this study analyzed the performance of the Color Shift Keying (CSK) scheme under a Vehicle-to-Infrastructure (V2I) downlink scenario to verify the capability of CSK as a communication tool for ITS. By modeling daylight noise using the modified Blackbody radiation model, this study examined the performance of V2I VLC under daytime conditions. The relationship between BER, the communication distance, and the amount of ambient-light noises under the pre-described V2I scenario were determined by simulations. 596 Fig. 1. Spectral selection example for codes (110, 010, 000) [9] profit than RF-based ITS solutions. Therefore, many studies of the convergence of VLC technology with ITS systems have been performed [17][18][19][20][21][22][23][24] .This study analyzed the performance of the Color Shift Keying (CSK) scheme under a Vehicle-to-Infrastructure (V2I) downlink scenario.The CSK scheme is a type of VLC scheme proposed by the IEEE 802.15.7 VLC standard, which transmits data using multi-spectral LEDs, such as Red, Green, and Blue LEDs [8][9][10] . Therefore, it transmits data by changing the emitted power of

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High-speed-camera image processing based LED traffic light detection for road-to-vehicle visible light communication

Cited by 44 publications

References 3 publications

Optimised optical wireless car‐to‐traffic‐light communication

Optimised optical wireless car‐to‐traffic‐light communication

Evaluation of visible light communication channel delay profiles for automotive applications

Performance of CSK Scheme for V2I Visible Light Communication

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