Art of Anamorphosis

I decide to show you another interesting form of art. It's called "Anamorphosis."
Distorted projection or perspective requiring the viewer to use special devices or occupy a specific vantage point (or both) to reconstitute the image.

The process of extreme anamorphosis has been used by artists to disguise caricatures, erotic and scatological scenes, and other furtive images from a casual viewer, while revealing an undistorted image to the knowledgeable spectator.

Hans Holbein the Younger is well known for incorporating an oblique anamorphic transformation into his painting "The Ambassadors." In this artwork, a distorted shape lies diagonally across the bottom of the frame. Viewing this from an acute angle transforms it into the plastic image of a human skull.

Here is the hidden skull in that painting from the right perspective:

The earliest known definitive example of perspective anamorphosis in modern times is in 1485 by Leonardo da Vinci - "Leonardo's Eye."

**Salvador Dalí ** used foreshortening and anamorphism in his paintings and works. He had a glass floor installed in a room next to his studio to enable radical perspective studies from above and below.

And here is the same from different perspective:

And here's a very useful movie from Brtothers Quay for those who want to know more about this art.