Bogdan sets forth criteria and methods of a structural analysis of the pictorial language as a first step toward a more adequate understanding of the semiotic system of visual arts. A structural approach to this pictorial language is presented along with a discussion of an information-processing model applied to optical illusions and computer simulations, and treatment of specifically paradigmatic case studies. Bogdan also discusses the Funeral Monument of Targu Jiu by Constantin Brancusi, one of the most important innovators in modern art.