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is the interpupillary distance of the viewer. By slightly varying the repetition width

: At Bell Labs, neuroscientist Béla Julesz invented the Random-Dot Stereogram (RDS) . He proved that depth perception occurs in the brain, not the eyes, by generating two separate random dot patterns that formed a 3D shape only when viewed through a stereoscope. MAGICEYE

: If viewing on a monitor, try to look at your own reflection on the screen glass. This automatically sets your eyes' convergence point behind the actual physical screen, allowing the stereogram to pop out in your peripheral vision. 6. Conclusion is the interpupillary distance of the viewer

The barrier to entry for autostereograms is physiological; it requires overriding the brain's natural impulse to focus directly on a physical object. The official Magic Eye FAQ recommends the following methods: : If viewing on a monitor, try to

When viewing a normal flat image, your eyes converge exactly on the paper at distance