Optical Illusion: Julian Beever Chalk Drawings

Video: Optical Illusion, Julian Beever Chalk Drawings.

"Julian Beever "Pavement Picasso" is an English, Belgium-based artist who has been creating amazing 3D pavement chalk drawings since the mid-1990s. His works are created using a projection called anamorphosis, and create the illusion of three dimensions when viewed from the correct angle.

Besides this pavement art, Beever also paints murals and oil paintings."

References:
Julian Beever, from Wikipedia, the free encyclopedia.
Julian Beever (official web site).
Pavement Picasso. BBC.