But these authors went further, interpreting the absorption coefficient determined in the visible region in terms of chlorophyll content. By inversion, their model became a nondestructive method for the measurement of photosynthetic pigments. The leaf biochemistry has been introduced by Conel et al. However they didn't validate it. T he first plate model was introduced by Allen et al.
Parameters are here an index of refraction and an absorption coefficient.
This model was successful in reproducing the reflectance spectrum of a compact corn leaf characterized by few air-cell wall interfaces. This additional parameter N actually describes the leaf internal structure and plays a role similar to that of the scattering coefficient s in the Kubelka-Munk model. Furthermore, it can be inverted to estimate these leaf biophysical properties. An exhaustive decomposition of leaf biochemistry has been attempted by Fourty et al. A black maple leaf is partitioned into two independent tissues, a palisade parenchyma and a spongy mesophyll.