Undulating almonds?

Professor Akiyoshi Kitaoka from the Department of Psychology at Ritsumeikan University in Kyoto, Japan, creates images that will make your head spin.
Through the study science of vision and perception, Kitaoka generates illusionary art.
The website hosts a wealth of vertigo-inducing images and a catalogue that cites various illusion phenomenon.

Note: It is prudent to wait 60 minutes after eating before viewing these images.

Gamila Releases Facemods- “Illusionary yet Real” Candlesticks that are Created from Your Face.Raleigh, NC November 23, 2007 Using state of the art computer software and the very latest in digital manufacturing technology, Gamila announces the ultimate in custom products: Facemods.Inspired by the work of Danish psychologist Edgar Rubin, Gamila has taken a famous optical illusion of two people’s profiles facing each other and turned it into a real candlestick. Simply submit a photograph of your profile and the Gamila system will do the rest: trace your profile, revolve it into a 3 dimensional shape and output the result in a proprietary ceramic material. All in 5 days.

“We’ve had 3D printing in house to develop projects for our design clients and for our Gamila branded items, but we decided we hadn’t pushed the limit with that technology yet,” says Aly Khalifa, managing partner of Gamila. “We challenged our team to rethink what we could do with this full connection of software to hardware continuity and we were captivated by the classic Rubin illusion: is it face or a vase? Well, we made both!”The innovation doesn’t stop with these one-of-a-kind creations of your face. Gamila has also recognized the nature of sharing with candlesticks at a dinner table, and so offer a “duet” version, which takes two faces and morphs them together to produce some extremely organic results. The result is a perfect poetic creation for recently joined couples.

Facemods are described in detail at the face-mod site and are available directly from Gamila at their web store on gamilacompany.com