Wikipedia
Phantograms, also known as Phantaglyphs, Op-Ups, free-standing anaglyphs, levitated images, and book anaglyphs, are a form of optical illusion. Phantograms use perspectival anamorphosis to produce a 2D image that is distorted in a particular way so as to appear, to a viewer at a particular vantage point, three-dimensional, standing above or recessed into a flat surface. The illusion of depth and perspective is heightened by stereoscopy techniques; a combination of two images, most typically but not necessarily an anaglyph (color filtered stereo image). With common (red–cyan) 3D glasses, the viewer's vision is segregated so that each eye sees a different image.
Phantograms can be created using drawn images, photographs, or computer-generated images. Phantograms are usually placed horizontally and are intended to be viewed standing back from the image, though they can also be placed vertically and viewed at an angle from above or below.
Phantogram (formerly Charlie Everywhere) is an American music duo from Saratoga Springs, New York, formed in 2007 and consisting of Josh Carter (vocals, guitars) and Sarah Barthel (vocals, keyboards). The band name was inspired by an optical illusion called a phantogram, in which two-dimensional images appear to be three-dimensional.
The band define their music as dream pop, electronica and trip hop, and have described their sound as "street beat, psych pop". According to Carter, their music has "lots of rhythms, swirling guitars, spacey keyboards, echoes, airy vocals". Carter and Barthel were inspired by artists including: the Beatles, David Bowie, Cocteau Twins, J Dilla, the Flaming Lips, John Frusciante, Serge Gainsbourg, Madlib, Sonic Youth, Yes, Kevin Shields and Prince.
They write and record in a remote barn in Upstate New York called Harmony Lodge. The band has released two studio albums ( Eyelid Movies in 2009, Voices in 2014), four EPs (Phantogram and Running From the Cops in 2009, Nightlife in 2011, Phantogram in 2013) and eight singles.