January 27, 2014

Color perception and antiferromagnetism

Here’s another thing about color chaos aka unitary vector field that makes it different from an Ising model: the energy function can be screwed up.

I’ve implemented the way of skewing it. Cell see its neighbors through light filter. In red area, it thinks its neighbors are slightly bluer than itself, whereas in reality they have the same color. In the similar fashion the blue cells are seen slightly greener, and green cells – slightly redder. This gives interesting psychedelic effects with variation of colors.

Interestingly, the rate at which colors changed depended on temperature – at high temperatures the changes were more rapid. That would be fun to explore in details how areas with different temperatures will interact with each other.

I could change color perception a little, but nothing stops me from making more radical change. For example, I could force cells see in inverted colors: cyan instead of red, magenta instead of green and yellow instead of blue. What I will get is model of antiferromagnetism.

Antiferromagnetic ordering
In antiferromagnets spins (little magnets) try not to be aligned with each other, but to have opposite orientations. Here is what YouTube made of a video of what I saw when I took a random pattern, then heat it and cool down again:

New rules give new structure. Here are snapshots:

To the right is the same frame with 2 times magnifications. There were stripped pattern in Ising model (which you can explore in my app), and here it appears again, only in color.

P.S. What did compression algorithm did to the picture?

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