基于二分法的RGB-LEDs配色研究

Color Matching of RGB-LEDs Based on Dichotomy

研究如何快速、精确地匹配三基色RGB的比例得到任意颜色的光具有重要意义.提出一种结构简单易于实现的RGB-LEDs配色模型,通过振幅调制电流来改变三基色LED辐射功率,从而调节各基色在混合色中的亮度比例,使得RGB-LEDs能够匹配到任意颜色.同时给出使用该模型进行配色的精确度评价指标.在此模型基础上提出一种基于二分法的RGB配色算法,使得混合颜色的色品坐标能够快速、精确地匹配到指定范围.仿真实验证明了算法的正确性和有效性.该算法收敛速度快,配色精确度高,具有很高的实用价值.

The way to match the ratio of RGB trichromatic lights to get arbitrary color of light quickly and accurately is of great significance. An easily realizable RGB;LEDs color matching model with simple structure was proposed. An arbitrary color can be matched by changing trichromatic LED radiation power in the way of current amplitude modulation, which in turn adjusts the proportion of each color＇s luminous intensity. At the same time, an accuracy evaluation indicator for color matching model was given. Based on the model, a dichotomy algorithm of RGB color matching is employed .so that the chromaticity coordinates of mixed color can be quickly matched to a specified scope. The simulation results prove the correctnees and validity of the algorithm. This algorithm has a high value in practical application for its rapid convergence and high precision color matching.