The use of distorted perspective and an understanding of optics by Ren
aissance artists resulted in the creation of unique illusions in their
work. Today, the need to translate satellite pictures into a rectilin
ear format and to project, record and adapt images to the different as
pect ratios of film and video, is causing new algorithms to be written
into software. These programs simplify and automate the task of conve
rting distorted perspective into a proper linear perspective and the r
everse. While investigating the use of these technologies to create ne
w illusions in art, I rediscovered unique phenomenona in two different
Renaissance paintings.