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Quantization to 16 colors with None/Riemersma error dithering


original

16 Colors 16 Colors + Riemersma
Uniform (2,1,1)
uniform
RMSE 130.294
uniform+rie
RMSE 168.876
Popularity (3 bits)
popular
RMSE 23.520
popular+rie
RMSE 36.307
Median Cut (8 bits)
median
RMSE 16.944
median+rie
RMSE 24.072
Octree (8 bits 2-pass)
octree
RMSE 21.621
octree+rie
RMSE 29.310
Xiaolin Wu v2
wu
RMSE 14.766
wu+rie
RMSE 21.802
Dennis Lee v3 (5 bits)
dl3
RMSE 15.104
dl3+rie
RMSE 21.179
Binary Split
bs
RMSE 15.041
bs+rie
RMSE 20.879
Lloyd (K-Means)
kmeans
RMSE 14.073
kmeans+rie
RMSE 19.890
NeuQuant (200 cycles)
nq
RMSE 14.278
nq+rie
RMSE 20.244
SColorQ
nq+rie
RMSE 26.085