Third set of optical illusion pictures

Here is another set of small optical illusion and visual perception related images you can link to from your own website / profile page.

Pic #21 of 25(back to thumbnails)

The Zollner illusion enhanced by size-constancy effects. Where long lines flank convex step edges both illusions co-operate, so the lines seem to diverge with distance. Where lines flank concave edges the illusions conflict and the long lines appear parallel.



In case you missed them you can still see the second perception pictures as well as the first set of illusion pictures.

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