基于CIELAB色域的儿童虹膜颜色定量测定方法研究

Study on quantitative deter mination of iris color in children based on CIELAB

目的:研究一套客观定量的虹膜颜色快速测定方法,进而为分析虹膜颜色与儿童近视风险的关系提供依据。方法:采集儿童虹膜图像,Photoshop CS和Image J软件处理虹膜图像,再将获得的RGB参数值通过标准化公式转化为L~*,a~*,b~*参数值(L~*表示颜色的亮度;a~*表示其在红色和绿色之间的位置,;b~*表示其在黄色和蓝色之间的位置)。结果:快速客观定量测定虹膜颜色。结论:将此方法测量的客观结果与使用主观比色法得到的结果进行对比,明确该方法的准确性和实用性都优于主观比色法。

Objective：We aim to explore a quantitative method for measuring iris color objectively, which can provide a basis for analyzing the relationship between iris color and the risk of myopia for children.Methods：We obtained standardized slit-lamp photographs, being processed by Photoshop CS and Image J. The achieved RGB parameter values are converted into L＊, a＊, b＊ parameter values by a normalized formula.（parameter L＊ means brightness; parameter a＊ means the location between red and green; parameter b＊ means the location between yellow and blue）.Results：Measure iris color objectively and quantitatively.Conclusions：We compared the objective method with the subjective colorimetry, manifesting that the accuracy and practicality of the method were better than the subjective colorimetry.