PWM调光LED照明对相机图像的影响及对策

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI:10.1109/RTUCON48111.2019.8982330

W. Oh, Chigak In, Y. Oh, K. Cho

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引用次数: 0

摘要

本文分析了PWM调光LED照明环境下相机图像的亮度波动，并提出了相应的对策。利用计算机仿真程序分析了摄像机的暴露剂量与PWM频率和占空比、摄像机的曝光时间和拍摄瞬间以及视频帧率有关。结果发现，当LED照明的PWM频率为24 kHz或其倍数时，大多数情况下不会出现亮度波动。实验结果证实了所提出的防止亮度波动措施的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effects of PWM Dimming LED Illumination on Camera Images and Countermeasures

This paper presents the analysis of brightness fluctuation for camera images under the PWM dimming LED Illumination environment and countermeasures against it. The exposure dose of a camera, which depends on PWM frequency and duty, exposure time and shooting instant of a camera, and video frame rate, was analyzed using a computer simulation program. As a result, it was found that the brightness fluctuation did not occur in most cases when the PWM frequency of LED lighting was at a frequency of 24 kHz or its multiple. The experimental results confirmed the effectiveness of proposed brightness fluctuation prevention measures.

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来源期刊

2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)

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