Kevin comments on Bizarre Illusions - Less Wrong

11 Post author: MrHen 27 January 2010 06:25PM

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Comment author: Kevin 28 January 2010 11:36:44AM *  2 points [-]

Ah, that worked for me. For people wondering how to do the technique to see "Magic Eye " images, you focus your eyes so that the image doubles and and overlaps the image. That causes a stereoscopic illusion when done on any things that overlap. You could practice it here. Focus your eyes so that the the first abc overlaps the second abc -- now you have three abc's in your vision, the 1st and 3rd abc are being seen out of one eye and the abc in the middle appears to be almost 3d.

a...b...c......................a...b...c

In this case, I could see that A and B are the same color by tilting my head and then focusing so I saw a double image of A overlapping B.

Comment author: MatthewB 29 January 2010 08:02:25AM 1 point [-]

Exactly... We spent a total of 6 weeks in Art School design class learning how to do this specific trick with a variety of images. From color, to line length (you know those "which line is longer" tricks that make you think one line is longer when they are usually the same length), to line thickness, to shading and tinting aliasing.

We spent those weeks consuming a lot of aspirin and Tylenol.