La technique picturale des peintres de la Renaissance italienne examinee par spectrophotometrie

摘要

Painting technique of Italian Renaissance artists evaluated by spectrophotometry Fiber-optics diffuse reflectance spectroscopy was used to characterize the painting technique of Leonardo de Vinci and Raffaello in three major works of art of the Renaissance period.Measurements are non invasive,without any contact,and can be performed in situ.Reflectance spectra are processed using Kubelka-Munk theory in order to get scattering and absorption parameters of the pigments.Assuming a linear dependance of these optical properties with the pigment volume concentration of the paint layers allowed to evaluate pigment quantities in the paint layers from reflectance measurements and to establish the fact that these two Italian artits developed a painting technique similar to that of the Early Flemish painters.