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Quantization to 16 colors with none/Riemersma error dithering


original

16 Colors16 Colors + Riemersma
Uniform (2,1,1)
uniform
RMSE 110.230
uniform+rie
RMSE 158.703
Popularity (3 bits)
popular
RMSE 38.275
popular+rie
RMSE 58.866
Median Cut (8 bits)
median
RMSE 25.443
median+rie
RMSE 36.359
Octree (8 bits 2-pass)
octree
RMSE 30.829
octree+rie
RMSE 40.199
Xiaolin Wu v2
wu
RMSE 22.330
wu+rie
RMSE 33.700
Dennis Lee v3 (5 bits)
dl3
RMSE 20.800
dl3+rie
RMSE 33.212
Binary Split
bs
RMSE 22.199
bs+rie
RMSE 33.858
Lloyd (K-Means)
kmeans
RMSE 20.800
kmeans+rie
RMSE 32.885
NeuQuant (200 cycles)
nq
RMSE 20.994
nq+rie
RMSE 30.011
SColorQ
sq
38.109