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This paper proposes an intelligent transport system positioning technique that determines the distance between vehicles via image sensor-based visible light communication. The proposed algorithm uses two image sensors and requires only one LED to estimate the distance. Furthermore, the cameras installed in vehicles are often of an inferior resolution that is insufficient to accurately determine the coordinates of the pixels on the image sensor. This paper addresses this problem by proposing a method that accurately determines the distance between two vehicles when the camera resolution is low. Simulations are conducted to verify the performance of the proposed algorithm.

Vehicle-to-Vehicle Distance Estimation Using a Low-Resolution Camera Based on Visible Light Communications