一种显示器颜色特性的反向查找新方法

A method for the calibration of CRT

根据实验的数据建立了CRT的设备颜色空间(RGB空间)与标准颜色空间(CIELAB空间)之间的颜色特性转换模型。通过分析大量的实验测量数据,以改进的三维查找表形式建立了RGB和L*a*b*之间的正逆转换关系。其中正向查找表的建立是按照三维线性的插值方法,逆向查找表的建立则利用一种插值和迭代相结合的新方法,使L*a*b*查找到较为准确的RGB值。通过用标准图像的的随机误差检验,其转换的平均色差ΔE为0.9286色差单位。

Based on the metrical data,an approximate conversion model between the space of RGB and Lab is set up.After analysing a large amount of measuring data,the 3D lookup table from the RGB space to the CIELAB space and the inverse table are established by programming.The positive lookup table is established on traditional interpolation method,while inverse table is established on the combination of the traditional interpolation and an innovative algorithm.Through the combined algorithm,the ideal RGB might be produced.The precision of inversive transform should be within 3 CIELAB color aberration divisions.