Notices by Tony Vladusich (tonyvladusich@mathstodon.xyz)

@sbszine @brucelawson

No not animated. It’s a perceptual effect called scintillation.

@tob @sbszine @brucelawson

See a doctor immediately! Jk. Do you see simultaneous contrast in this display? The disk against the dark surround should look lighter than the one against the light surround.

@tob @sbszine @brucelawson

Some folks don’t see simultaneous contrast. You have a very interesting visual system!

@brucelawson

There is something deeply fundamental about the way the visual system parses images with dark and light components. This example is particularly compelling. I feel certain extant models of visual perception are missing some fundamental idea involving opposite polarity edges and how they are combined into representations. Here’s another example from my own research some years back. The rings seem against high contrast backgrounds seem lustrous and appear to shimmer.