Magic Eye ’s grandad was the random dotstereograminvented by neuroscientist and psychologist Bela Julesz in 1959 to test multitude ’s power to see in 3D. Julesz would generate one image of uniform , randomly distributed dots . Then , he ’d select a circular area of Department of Transportation within the image and switch that area slightly in a second image . Someone viewing the two impression side by side perceive a circle float above the background , even though the random dots had no depth cue . This tolerate his musical theme that profundity perception happened in the Einstein , and not in the eye itself .
Twenty years later , a student of Julesz ’s named Chris Tyler and computing gadget programmer Maureen Clarke , discovered that the same affair could be done with just a single image .
Their enquiry revealed what was happen in the centre and brain when viewers looked at stereograms . When acquaint with an image like this , your center might each look at two different points , but because the image is a repeating pattern , the brain is tricked into thinking that the two spot are the same matter . The brain then perceive profundity , with the two points as being on a practical carpenter’s plane behind the pattern .

Magic Eye – which bewilder its first in 1991 when engineer Tom Baccei , 3D artist Cheri Smith and software engineer Bob Salitsky began building on Julesz ’s and Tyler ’s enquiry – work by manipulating a echo pattern to control the perceived depth and obscure a three dimensional epitome in a two dimensional pattern .
A Magic Eye image depart with a programmer creating the hidden ikon ( aschooner , for example ) as a grayscale , smooth gradientdepth mapwhere dark points that should be furthest aside are darker and skinny point in time are in light shades . Then , they create a 2D normal to camouflage that epitome . Finally , a computer program using a Magic Eye - patented algorithm takes the image model and the pattern and orients repeating pattern to the intended depth of the hidden trope . When someone looks at a Magic Eye , the repeating pattern feeds the psyche the profoundness selective information encode into it , and the brainiac perceive the hidden picture .
See Also : Why Ca n’t Some People See Magic Eye Pictures ?