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Development of a method to measure distances and detect environmental differences in night vision images, indicating feasibility for railway safety.
We developed a method for capturing and analyzing images captured at night and verified the feasibility for limit measurement and difference detection of the environment. The result confirmed that by combining infrared light projectors, it is possible to capture a clear image of the rail periphery. We also developed a method for measuring the distances around the platform and examined the measurement accuracy. The average error was less than 20 mm. Furthermore, we confirmed that the difference detection can be properly performed even for night vision images.
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Shimizu et al. (2026) studied this question.
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