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Kubelka-Munk Model for Imperfectly Diffuse Light Distribution in Paper

机译:Kubelka-Munk模型用于纸中不完美漫射光的分布

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Perfectly diffuse light is a fundamental assumption in the Kubelka-Munk (KM) model. This assumption is, however, seldom fulfilled by real media. In this work, we build a bridge between a weakly absorbing medium with an imperfectly diffuse light distribution and the corresponding KM model relying on a perfectly diffuse light distribution. We multiply the apparent K and S phenomenal coefficients deduced from a learning set medium by a scaling factor expressing the ratio of light diffuseness between the target medium and the learning set medium. For the target medium, thanks to this diffuseness scaling factor, theoretically predicted reflection and transmission spectra agree with the corresponding measured spectra. The illumination geometry, the optical properties and the thickness of the medium have an impact on the light diffuseness and therefore on the proposed diffuseness scaling factor.
机译:完全散射光是Kubelka-Munk(KM)模型的基本假设。但是,实际媒体很少能满足这个假设。在这项工作中,我们建立了具有不完美漫射光分布的弱吸收介质与依赖于完全漫射光分布的相应KM模型之间的桥梁。我们将从学习集媒体中推导出的表观K和S现象系数乘以比例因子,该比例因子表示目标媒体和学习集媒体之间的光扩散比。对于目标介质,由于此扩散比例因子,理论上预测的反射和透射光谱与相应的测量光谱一致。照明的几何形状,光学特性和介质的厚度会影响光的扩散,因此会影响建议的扩散比例因子。

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