频闪效应数码成像的原理及仿真

摘要

目前，还没有建立标准去定义LED灯具的可接受闪烁频率、幅度以及检测方法。大多数消费者在选购照明灯具时，通过以手机拍摄的方法捕捉到频闪效应条纹，并以条纹的明显程度作为频闪效应的判断标准。本文分析了频闪效应的数码成像原理，总结出计算公式，提出利用MATLAB实现频闪效应条纹的仿真，并通过实验验证其可靠性。灯具制造商可通过仿真方法，获取任意自设定闪烁波形的频闪效应条纹，收集足够的数据，以针对消费者的购买习惯，建立内部灯具可接受闪烁的判断标准。%Presently , solid-state lighting luminaires have no standard to define an acceptable frequency , amplitude variation , and standardised measurement procedures for flicker . Most consumers prefer to evaluate flicker by the acceptability of flicker pattern photographed by cell phone camera .In this paper , the principle of digital imaging of stroboscopic effect is analyzed , summarized into equations and verified by Matlab simulation .It could be a useful tool for luminaire manufacturers in collecting sufficient data to specify the flicker criteria based on the consumers ’ habit for their products .