Experimenting with colouring for : for each pixel, normalize a neighbourhood's smooth iteration count so the minimum is $0$ and the sum is $1$, then compute $E = \frac{ \sum x \log x }{ \sum 1 }$. Substitute $0$ for $0 \log 0$.

Without jitter I got some strange grid artifacts that looked really bad, especially when animated, with jitter the image is so noisy I need tons of samples to smooth it out, which also means I can't use fast-changing palettes in the exterior because the averaging turns them to mud.

This video is with 100 samples for entropy calculations to get each colour sample, and 100 colour samples per pixel.

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