Hello, thumbhash

Hello, QOI (and glitches)

Cats and Donkey

Dithered heatmap

Local median

Heatmap

Hello, PyWavelets

Hello, libgif

Tri-adic mesh refinement

Transport to a map

Sliced Optimal Transport

Hello glitch

Black and white colored castelo

Frida Kahlo’s palette

Autochrome

Linde–Buzo–Gray RGB Color stippling

Hue blur

Image FFT

Image

Algorithms

Is the local median in any way similar to Symmetric Nearest Neighbor Median?

(I did experiments with SNN averaging here, but the original paper mentions a median implementation)
https://observablehq.com/@jobleonard/symmetric-nearest-neighbour-all-the-things

Job van der Zwan

Ah, no it looks like it's distinct (although the SNNM filter already is local to the radius it uses as an input)

Furthermore what I'm doing here is not strictly the local median: it's a posterized average of posterized values. This would be identical to the median (or mode, for that matter…) if the average was uniform over a neighborhood. However, since I took a shortcut with using array-blur, which does a weighted average, the result might be a bit different.

typo? isn't 'traditional posterization' shown in the 'bottom left'?

Jonathan Helfman