Due to its simplicity, the theory of KUBELKA-MUNK [1] has found a wide acceptance for modeling the optical properties of light scattering materials. However, the concept is not explicitly adapted to predict halftone prints on paper. In this respect, a recent improvement was given by BERG [2]. Our approach is an extension of BERG’s model in order to reduce the gap between the mathematical descri...

Parmi les modèles de prédiction couleur courants, celui de Kubelka et Munk occupe une position centrale. En dépit de son caractère phénoménologique et de sa simplicité, il conduit à des résultats intéressants, et est toujours employé dans les systèmes d’aide à la formulation d’encres, de peintures et de teintures. Après un bref rappel du modèle, une nouvelle formulation mathématique basée sur u...

This paper presents various extensions of the so-called two-flux models for prediction of reflectance and transmittance of diffusing media, i.e. the Kubelka-Munk model, introduced in [HDI062], and the extension of Kubelka-Munk for stacks of diffusing layers. A first matrix formulation of the Kubelka-Munk differential equations leads to a matrix framework based on transfer matrices, which can be...

A generally applicable theoretical model describing light propagating through turbid media is proposed. The theory is a generalization of the revised Kubelka-Munk theory, extending its applicability to accommodate a wider range of absorption influences. A general expression for a factor taking into account the effect of scattering on the total photon path traversed in a turbid medium is derived...

Postpartum mental health study flawed by fetal loss omission The recent study of postpartum psychiatric illness [1] is unfortunately flawed by the decision by Munk-Olsen et al. to exclude effects of prior pregnancy losses. Numerous studies (including one by Munk-Olsen) have shown that prior induced abortion or miscarriage increases the risk of postpartum psychiatric disorders [2,3]. Indeed, mul...