I'll let you figure out why building a backing that is made up of different materials that reflect radiation in a checkerboard pattern won't work. Uh. Why won

I'll let you figure out why building a backing that is made up of different materials that reflect radiation in a checkerboard pattern won't work. Uh. Why won't it work? From what I recall of the images, they're sort of gray-scale. The brightness of a body drops off as it falls away from the camera (i.e. the outline of your body is a darker gray than, say, your forward-facing bellybutton region), since, presumably, as we wrap around to the sides of your body, more energy is bounced out to the sides than to the 'camera'. So, I assume it's depicting the amount of radiation reflected back to the 'camera', right? So, if you make a checkerboard background of materials that bounce differing amounts of energy back (either due to composition of the tile or its angle), why wouldn't it work?