This PhD dissertation is about western Art, and especially about "the Perspective in the Italian Renaissance Painting.
In this open window it is necessary to draw straight lines to represent the horizon, divide the painting with different.
To properly use the Linear Perspective a painter has to imagine the canvas as an "open window" through which he sees the subject of the painting.
Linear Perspective is a mathematical system used to create the illusion of space and distance on a flat surface.
This PhD dissertation is about western Art, and especially about "the Perspective in the Italian Renaissance Painting