In May 2009, Greg “The Grease” Lehman showed us a relatively new approach to 3D Anamorphic Artwork. His tactics involved similar moves some of them chalk artists use, but with use of a printer we managed to avoid the artistic factor, where normally we would have to get our hands “dirty” to actually paint the image. This time I found a creation done by one of his fans, where you can see the result is quite amazing. Apparently the Spalding we see is just a painting on the street, but when seen from certain angle looks impossibly real. In fact, it’s so realistic that I have my doubts on this one. Perhaps the user that submitted this, sent me the photo of a real ball (by mistake?) that the author used to guide him in his painting process.

Source :
www.moillusions.com/2009/10/painted-basket-ball-optical-illu
sion.html