The purpose of the present study is to predict the whole chromatic path traveled by the colors of glossy anodized titanium samples in every specular geometry. It is based on measurements of the samples’ reflectance spectra in a limited number of specular geometries, which allow us to obtain the oxide layer structural parameters (thickness, refractive index), which are then put into an optical model to predict the samples' reflectance spectra in every specular geometry. A good color prediction performance is obtained, with an average ${\Delta}{{ E}_{94}}$ color distance over all samples and geometries of 1.9. The oxide layer structural parameters are also in good agreement with refractive index values extracted from the literature and thicknesses measured on electron microscopy images of sample sections.

中文翻译：

---

通过氧化层结构参数的测定对光泽阳极氧化钛样品进行多角度颜色预测

本研究的目的是预测在每个镜面几何形状中光泽阳极氧化钛样品的颜色所经过的整个彩色路径。它基于在有限数量的镜面几何中对样品反射光谱的测量，这使我们能够获得氧化层结构参数（厚度、折射率），然后将这些参数放入光学模型中以预测样品的反射率每个镜面几何中的光谱。获得了良好的颜色预测性能，所有样本和几何的平均${\Delta}{{ E}_{94}}$颜色距离为 1.9。氧化层结构参数也与从文献中提取的折射率值和在样品截面的电子显微镜图像上测量的厚度非常一致。