基于线性数据库的色差权重因子计算机配色

计算机配色广泛应用于纺织印染、涂料油漆、塑料、建材等工业领域。计算机配色的基础理论是库贝尔卡-芒克(Kubelka-Munk)函数与浓度的线性关系，但实际上，库贝尔卡-芒克函数与浓度呈非线性关系，这限制了计算机配色在我国的广泛应用，为此，提出一种数学方法，建立一个线性染料数据库。全光谱配色方法是计算机配色的重要方法之一，但对物体而言，每个波长上同等光谱反射率的变化却显示出不同程度的颜色感知差异，在某些波长处，呈现较强的灵敏性，而在另外一些波长处有较大的惰性，因此，根据色度学理论，为全光谱配色提供每个波长处灵敏程度不同的色差型权重因子。同时，为色差权重因子提供线性染料数据库。结果证明，数据库的线性程度明显提高，使用色差权重因子配色的效果明显提高。

Color Difference Weight Computer Color Matching Based Linear Dadabase

Computer color matching is widely applied in industry such as textile printing and dyeing, paint, plastic and building material. The fundamental theory of computer color matching is the linear relationship between Kubelka-Munk function and concentration of dye. But in fact, Kubelka-Munk function is nonlinear with the concentration of dye, which limits the wide appliation of computer color matching in China. Therefore, a kind of mathematical method is put forward and a linear dye database is set up accordingly. Spectrophotometric color matching is an important method for computer color matching. But the change of reflectivity of coordinative spectrum at each wavelength can cause different degree color difference for the object, and the change is sharp at some wavelength while it is lazier at others. So the different degree color difference weight factor at each wavelength is given for spectrophotometric color matching according to colorimetry, and provided with linear dye database. The result show that the linearity of the database is increased obviously and the use of color difference weight factor could improve the spectrophotometric color matching distinctly.