All waves (including light) are subject to diffraction or refraction, which stems from bending around obstacles. Of course, the wavelength of light is only 500 nanometers. Unless Mr. Cramer is ~300nm tall, bending a light wave around him seems difficult.
Using a fabric with diffractive effects could be helpful though.
i spent some time working with fiber optic strands to transfer video and images over several yards away,back in the early 90's," thousands of strands" per bundle to create something akin to pixels on a televsion screen.. so i am wondering if they are using bundled fiber optic cable to gather light from the back and transfering it to the fabric front.. perhaps its like a sleeping bag with fiber optic cable running around the bag, that a person or object would have to get inside of, to avoid becoming part of the projected image on the fabric.