Image et représentation optique : Blaise de Parme et Léon-Baptiste Alberti

The article is questioning the nature of the visual representation and of the reality provided by the human perception, by analyzing the views of a later XIVth thinker, Blaise Pelacani of Parma and his successor, Leon-Baptiste Alberti. Thus, it marks those knowledge problems from a mathematical point of view and tries to establish the cognitive validity of the optical image.