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Quantization to 256 colors with none/Riemersma error dithering


original

256 Colors 256 Colors + Riemersma
Uniform (3,3,2)
uniform
RMSE 31.706
uniform+rie
RMSE 42.044
Popularity (5 bits)
popular
RMSE 13.986
popular+rie
RMSE 25.142
Median Cut (8 bits)
median
RMSE 8.169
median+rie
RMSE 12.504
Octree (8 bits 2-pass)
octree
RMSE 8.135
octree+rie
RMSE 12.217
Xiaolin Wu v2
wu
RMSE 6.825
wu+rie
RMSE 10.480
Dennis Lee v3 (5 bits)
dl3
RMSE 6.687
dl3+rie
RMSE 10.591
Binary Split
bs
RMSE 6.802
bs+rie
RMSE 10.692
Lloyd (K-Means)
kmeans
RMSE 6.504
kmeans+rie
RMSE 10.421
NeuQuant (200 cycles)
nq
RMSE 6.728
nq+rie
RMSE 10.680
SColorQ
NA